./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU --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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:59:57,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:59:57,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:59:57,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:59:57,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:59:57,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:59:57,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:59:57,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:59:57,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:59:57,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:59:57,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:59:57,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:59:57,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:59:57,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:59:57,602 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:59:57,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:59:57,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:59:57,606 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:59:57,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:59:57,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:59:57,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:59:57,611 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:59:57,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:59:57,612 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:59:57,612 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:59:57,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:59:57,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:59:57,613 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:59:57,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:59:57,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:59:57,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:59:57,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:59:57,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:57,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:59:57,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:59:57,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:59:57,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:59:57,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:59:57,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:59:57,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:59:57,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:59:57,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:59:57,620 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_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-10-31 21:59:57,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:59:58,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:59:58,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:59:58,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:59:58,011 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:59:58,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c Unable to find full path for "g++" [2024-10-31 22:00:00,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:00:00,775 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:00:00,776 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-31 22:00:00,784 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/data/c702b387f/18da9600e4c74d18bc9c3d5f4d4136d2/FLAG04fa6412f [2024-10-31 22:00:01,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/data/c702b387f/18da9600e4c74d18bc9c3d5f4d4136d2 [2024-10-31 22:00:01,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:00:01,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:00:01,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:01,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:00:01,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:00:01,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61064c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01, skipping insertion in model container [2024-10-31 22:00:01,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:00:01,432 WARN L251 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_0ddb429e-eade-4493-82cb-761943826407/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2767,2780] [2024-10-31 22:00:01,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:01,456 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:00:01,482 WARN L251 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_0ddb429e-eade-4493-82cb-761943826407/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2767,2780] [2024-10-31 22:00:01,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:01,505 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:00:01,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01 WrapperNode [2024-10-31 22:00:01,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:01,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:01,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:00:01,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:00:01,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,564 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 270 [2024-10-31 22:00:01,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:01,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:00:01,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:00:01,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:00:01,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,604 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-31 22:00:01,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,629 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:00:01,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:00:01,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:00:01,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:00:01,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:01,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:01,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:00:01,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:00:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:00:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:00:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:00:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:00:01,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:00:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:00:01,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:00:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:00:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:00:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:00:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:00:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:00:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:00:01,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:00:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:00:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:00:01,715 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:00:01,846 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:00:01,849 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:00:02,485 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:00:02,486 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:00:03,007 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:00:03,007 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:00:03,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:03 BoogieIcfgContainer [2024-10-31 22:00:03,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:00:03,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:00:03,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:00:03,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:00:03,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:00:01" (1/3) ... [2024-10-31 22:00:03,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a90539d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:03, skipping insertion in model container [2024-10-31 22:00:03,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (2/3) ... [2024-10-31 22:00:03,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a90539d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:03, skipping insertion in model container [2024-10-31 22:00:03,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:03" (3/3) ... [2024-10-31 22:00:03,024 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-10-31 22:00:03,050 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:00:03,050 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:00:03,050 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:00:03,127 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:00:03,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-10-31 22:00:03,247 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-10-31 22:00:03,249 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:00:03,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-31 22:00:03,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-10-31 22:00:03,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-10-31 22:00:03,278 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:03,288 INFO L333 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, 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;@47d4d1b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:03,289 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:00:03,312 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:00:03,313 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-10-31 22:00:03,313 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:00:03,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:03,314 INFO L204 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] [2024-10-31 22:00:03,315 INFO L396 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)] === [2024-10-31 22:00:03,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1791323821, now seen corresponding path program 1 times [2024-10-31 22:00:03,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:03,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704981432] [2024-10-31 22:00:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:03,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704981432] [2024-10-31 22:00:04,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704981432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:04,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:04,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:00:04,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191904730] [2024-10-31 22:00:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:04,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:00:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:04,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:00:04,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:00:04,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:04,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:04,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:04,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:04,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:05,564 INFO L124 PetriNetUnfolderBase]: 2897/3947 cut-off events. [2024-10-31 22:00:05,565 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-10-31 22:00:05,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 3947 events. 2897/3947 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16746 event pairs, 254 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 5265. Up to 1295 conditions per place. [2024-10-31 22:00:05,601 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 122 selfloop transitions, 13 changer transitions 2/138 dead transitions. [2024-10-31 22:00:05,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 138 transitions, 622 flow [2024-10-31 22:00:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:00:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:00:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-10-31 22:00:05,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-31 22:00:05,616 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 9 states and 174 transitions. [2024-10-31 22:00:05,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 138 transitions, 622 flow [2024-10-31 22:00:05,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 138 transitions, 574 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 22:00:05,628 INFO L231 Difference]: Finished difference. Result has 42 places, 49 transitions, 156 flow [2024-10-31 22:00:05,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=49} [2024-10-31 22:00:05,636 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-10-31 22:00:05,636 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 49 transitions, 156 flow [2024-10-31 22:00:05,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:05,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:05,637 INFO L204 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] [2024-10-31 22:00:05,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:00:05,638 INFO L396 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)] === [2024-10-31 22:00:05,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:05,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1504680807, now seen corresponding path program 2 times [2024-10-31 22:00:05,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:05,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899636082] [2024-10-31 22:00:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:05,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:05,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:05,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899636082] [2024-10-31 22:00:05,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899636082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:05,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:05,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:00:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514650711] [2024-10-31 22:00:05,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:05,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:00:05,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:05,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:00:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:00:05,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:05,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:05,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:05,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:05,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:06,988 INFO L124 PetriNetUnfolderBase]: 3338/4609 cut-off events. [2024-10-31 22:00:06,988 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-10-31 22:00:06,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10154 conditions, 4609 events. 3338/4609 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20971 event pairs, 339 based on Foata normal form. 1/3781 useless extension candidates. Maximal degree in co-relation 7203. Up to 1443 conditions per place. [2024-10-31 22:00:07,020 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 124 selfloop transitions, 15 changer transitions 2/142 dead transitions. [2024-10-31 22:00:07,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 142 transitions, 655 flow [2024-10-31 22:00:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:00:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:00:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-10-31 22:00:07,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-10-31 22:00:07,023 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 156 flow. Second operand 9 states and 176 transitions. [2024-10-31 22:00:07,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 142 transitions, 655 flow [2024-10-31 22:00:07,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 142 transitions, 653 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 22:00:07,035 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 218 flow [2024-10-31 22:00:07,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-10-31 22:00:07,036 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-10-31 22:00:07,037 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 218 flow [2024-10-31 22:00:07,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:07,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:07,038 INFO L204 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] [2024-10-31 22:00:07,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:00:07,039 INFO L396 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)] === [2024-10-31 22:00:07,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1891129723, now seen corresponding path program 1 times [2024-10-31 22:00:07,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:07,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579104678] [2024-10-31 22:00:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:07,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579104678] [2024-10-31 22:00:07,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579104678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975875618] [2024-10-31 22:00:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:07,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:07,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:07,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:00:07,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:00:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:07,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:00:07,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:00:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:07,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:00:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:07,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975875618] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:07,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:00:07,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2024-10-31 22:00:07,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152113903] [2024-10-31 22:00:07,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:07,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:00:07,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:00:07,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:00:07,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:07,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:07,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:07,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:09,244 INFO L124 PetriNetUnfolderBase]: 4570/6299 cut-off events. [2024-10-31 22:00:09,244 INFO L125 PetriNetUnfolderBase]: For 2968/2968 co-relation queries the response was YES. [2024-10-31 22:00:09,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14766 conditions, 6299 events. 4570/6299 cut-off events. For 2968/2968 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 27897 event pairs, 2476 based on Foata normal form. 1/5189 useless extension candidates. Maximal degree in co-relation 10928. Up to 3282 conditions per place. [2024-10-31 22:00:09,290 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 119 selfloop transitions, 8 changer transitions 3/131 dead transitions. [2024-10-31 22:00:09,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 131 transitions, 693 flow [2024-10-31 22:00:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:00:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:00:09,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-10-31 22:00:09,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-10-31 22:00:09,294 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 218 flow. Second operand 7 states and 145 transitions. [2024-10-31 22:00:09,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 131 transitions, 693 flow [2024-10-31 22:00:09,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 676 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-31 22:00:09,314 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 247 flow [2024-10-31 22:00:09,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-10-31 22:00:09,316 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-10-31 22:00:09,316 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 247 flow [2024-10-31 22:00:09,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:09,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:09,317 INFO L204 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] [2024-10-31 22:00:09,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:00:09,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:09,519 INFO L396 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)] === [2024-10-31 22:00:09,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash 421060979, now seen corresponding path program 1 times [2024-10-31 22:00:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:09,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508610138] [2024-10-31 22:00:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:09,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:09,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:09,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508610138] [2024-10-31 22:00:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508610138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:09,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:09,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:00:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576656140] [2024-10-31 22:00:09,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:09,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:00:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:09,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:00:09,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:00:09,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:09,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:09,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:09,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:09,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:10,967 INFO L124 PetriNetUnfolderBase]: 5454/7667 cut-off events. [2024-10-31 22:00:10,968 INFO L125 PetriNetUnfolderBase]: For 4057/4057 co-relation queries the response was YES. [2024-10-31 22:00:10,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18768 conditions, 7667 events. 5454/7667 cut-off events. For 4057/4057 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37517 event pairs, 2454 based on Foata normal form. 0/6755 useless extension candidates. Maximal degree in co-relation 15490. Up to 4606 conditions per place. [2024-10-31 22:00:11,036 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 99 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-10-31 22:00:11,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 664 flow [2024-10-31 22:00:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:00:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:00:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-10-31 22:00:11,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-10-31 22:00:11,039 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 247 flow. Second operand 5 states and 99 transitions. [2024-10-31 22:00:11,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 111 transitions, 664 flow [2024-10-31 22:00:11,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 653 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 22:00:11,063 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 328 flow [2024-10-31 22:00:11,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-10-31 22:00:11,064 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-10-31 22:00:11,065 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 328 flow [2024-10-31 22:00:11,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:11,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:11,065 INFO L204 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] [2024-10-31 22:00:11,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:00:11,066 INFO L396 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)] === [2024-10-31 22:00:11,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:11,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1385803279, now seen corresponding path program 1 times [2024-10-31 22:00:11,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:11,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390693221] [2024-10-31 22:00:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:11,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:11,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:11,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390693221] [2024-10-31 22:00:11,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390693221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:11,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:11,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:00:11,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708124378] [2024-10-31 22:00:11,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:11,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:00:11,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:11,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:00:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:00:11,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:11,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:11,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:11,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:12,366 INFO L124 PetriNetUnfolderBase]: 3800/5442 cut-off events. [2024-10-31 22:00:12,366 INFO L125 PetriNetUnfolderBase]: For 4113/4113 co-relation queries the response was YES. [2024-10-31 22:00:12,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 5442 events. 3800/5442 cut-off events. For 4113/4113 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 26355 event pairs, 1572 based on Foata normal form. 0/5057 useless extension candidates. Maximal degree in co-relation 10643. Up to 2570 conditions per place. [2024-10-31 22:00:12,410 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 6 changer transitions 5/99 dead transitions. [2024-10-31 22:00:12,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 600 flow [2024-10-31 22:00:12,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:00:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:00:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-31 22:00:12,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-10-31 22:00:12,416 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 328 flow. Second operand 5 states and 104 transitions. [2024-10-31 22:00:12,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 600 flow [2024-10-31 22:00:12,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 572 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-31 22:00:12,442 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 255 flow [2024-10-31 22:00:12,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-10-31 22:00:12,447 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-10-31 22:00:12,447 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 255 flow [2024-10-31 22:00:12,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:12,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:12,451 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:12,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:00:12,452 INFO L396 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)] === [2024-10-31 22:00:12,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash -139095454, now seen corresponding path program 1 times [2024-10-31 22:00:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:12,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877473113] [2024-10-31 22:00:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:12,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:12,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:12,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877473113] [2024-10-31 22:00:12,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877473113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:12,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:12,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:00:12,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686389526] [2024-10-31 22:00:12,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:12,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:00:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:12,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:00:12,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:00:12,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:12,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:12,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:12,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:12,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:13,994 INFO L124 PetriNetUnfolderBase]: 3820/5452 cut-off events. [2024-10-31 22:00:13,994 INFO L125 PetriNetUnfolderBase]: For 3238/3238 co-relation queries the response was YES. [2024-10-31 22:00:14,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 5452 events. 3820/5452 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26046 event pairs, 1320 based on Foata normal form. 2/5069 useless extension candidates. Maximal degree in co-relation 11209. Up to 2527 conditions per place. [2024-10-31 22:00:14,037 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 83 selfloop transitions, 5 changer transitions 59/148 dead transitions. [2024-10-31 22:00:14,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 148 transitions, 796 flow [2024-10-31 22:00:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:00:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:00:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-10-31 22:00:14,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-31 22:00:14,040 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 255 flow. Second operand 8 states and 170 transitions. [2024-10-31 22:00:14,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 148 transitions, 796 flow [2024-10-31 22:00:14,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 148 transitions, 783 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 22:00:14,060 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 239 flow [2024-10-31 22:00:14,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-10-31 22:00:14,064 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-10-31 22:00:14,065 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 239 flow [2024-10-31 22:00:14,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:14,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:14,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:14,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:00:14,068 INFO L396 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)] === [2024-10-31 22:00:14,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:14,071 INFO L85 PathProgramCache]: Analyzing trace with hash 49833286, now seen corresponding path program 2 times [2024-10-31 22:00:14,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:14,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871843159] [2024-10-31 22:00:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:14,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871843159] [2024-10-31 22:00:14,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871843159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:14,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:14,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:00:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838180882] [2024-10-31 22:00:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:14,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:00:14,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:00:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:00:14,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:14,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:14,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:14,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:14,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:15,701 INFO L124 PetriNetUnfolderBase]: 4178/5966 cut-off events. [2024-10-31 22:00:15,701 INFO L125 PetriNetUnfolderBase]: For 4106/4106 co-relation queries the response was YES. [2024-10-31 22:00:15,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15142 conditions, 5966 events. 4178/5966 cut-off events. For 4106/4106 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 28721 event pairs, 1704 based on Foata normal form. 2/5556 useless extension candidates. Maximal degree in co-relation 15093. Up to 2527 conditions per place. [2024-10-31 22:00:15,743 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 102 selfloop transitions, 6 changer transitions 44/153 dead transitions. [2024-10-31 22:00:15,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 153 transitions, 868 flow [2024-10-31 22:00:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:00:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:00:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-10-31 22:00:15,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-10-31 22:00:15,746 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 239 flow. Second operand 8 states and 173 transitions. [2024-10-31 22:00:15,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 153 transitions, 868 flow [2024-10-31 22:00:15,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 817 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-10-31 22:00:15,771 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 255 flow [2024-10-31 22:00:15,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-10-31 22:00:15,773 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-10-31 22:00:15,774 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 255 flow [2024-10-31 22:00:15,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:15,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:15,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:15,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:00:15,775 INFO L396 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)] === [2024-10-31 22:00:15,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash -808810084, now seen corresponding path program 3 times [2024-10-31 22:00:15,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061710325] [2024-10-31 22:00:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:16,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:16,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061710325] [2024-10-31 22:00:16,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061710325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:16,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:16,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:00:16,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256066807] [2024-10-31 22:00:16,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:16,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:00:16,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:16,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:00:16,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:00:16,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:16,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:16,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:16,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:16,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:17,224 INFO L124 PetriNetUnfolderBase]: 3860/5517 cut-off events. [2024-10-31 22:00:17,225 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-10-31 22:00:17,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14278 conditions, 5517 events. 3860/5517 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25817 event pairs, 1745 based on Foata normal form. 2/5129 useless extension candidates. Maximal degree in co-relation 14240. Up to 2527 conditions per place. [2024-10-31 22:00:17,267 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 82 selfloop transitions, 5 changer transitions 58/146 dead transitions. [2024-10-31 22:00:17,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 821 flow [2024-10-31 22:00:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:00:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:00:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-10-31 22:00:17,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-31 22:00:17,270 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 255 flow. Second operand 8 states and 168 transitions. [2024-10-31 22:00:17,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 821 flow [2024-10-31 22:00:17,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 794 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-31 22:00:17,296 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 259 flow [2024-10-31 22:00:17,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=259, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-10-31 22:00:17,297 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-10-31 22:00:17,297 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 259 flow [2024-10-31 22:00:17,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:17,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:17,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:17,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:00:17,298 INFO L396 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)] === [2024-10-31 22:00:17,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1596420867, now seen corresponding path program 1 times [2024-10-31 22:00:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:17,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102122474] [2024-10-31 22:00:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:17,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:17,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102122474] [2024-10-31 22:00:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102122474] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:17,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:17,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:00:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666143739] [2024-10-31 22:00:17,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:17,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:00:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:00:17,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:00:17,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:17,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:17,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:17,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:17,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:19,629 INFO L124 PetriNetUnfolderBase]: 9020/12758 cut-off events. [2024-10-31 22:00:19,630 INFO L125 PetriNetUnfolderBase]: For 9668/9668 co-relation queries the response was YES. [2024-10-31 22:00:19,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32257 conditions, 12758 events. 9020/12758 cut-off events. For 9668/9668 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 68410 event pairs, 2572 based on Foata normal form. 4/11712 useless extension candidates. Maximal degree in co-relation 32182. Up to 3835 conditions per place. [2024-10-31 22:00:19,712 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 160 selfloop transitions, 28 changer transitions 11/200 dead transitions. [2024-10-31 22:00:19,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 200 transitions, 1255 flow [2024-10-31 22:00:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:00:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:00:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-10-31 22:00:19,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-10-31 22:00:19,714 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 259 flow. Second operand 9 states and 184 transitions. [2024-10-31 22:00:19,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 200 transitions, 1255 flow [2024-10-31 22:00:19,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 200 transitions, 1209 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-10-31 22:00:19,759 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 522 flow [2024-10-31 22:00:19,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=522, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-10-31 22:00:19,760 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-10-31 22:00:19,760 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 522 flow [2024-10-31 22:00:19,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:19,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:19,761 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:19,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:00:19,762 INFO L396 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)] === [2024-10-31 22:00:19,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:19,762 INFO L85 PathProgramCache]: Analyzing trace with hash 89447332, now seen corresponding path program 1 times [2024-10-31 22:00:19,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:19,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713714205] [2024-10-31 22:00:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:19,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:20,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:20,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713714205] [2024-10-31 22:00:20,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713714205] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870754985] [2024-10-31 22:00:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:20,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:20,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:20,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:00:20,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:00:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:20,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:00:20,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:00:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:20,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:00:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870754985] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:20,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:00:20,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2024-10-31 22:00:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671203785] [2024-10-31 22:00:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:20,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:00:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:00:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:00:20,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:20,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:20,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:20,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:20,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:21,803 INFO L124 PetriNetUnfolderBase]: 8062/11384 cut-off events. [2024-10-31 22:00:21,803 INFO L125 PetriNetUnfolderBase]: For 14152/14152 co-relation queries the response was YES. [2024-10-31 22:00:21,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32080 conditions, 11384 events. 8062/11384 cut-off events. For 14152/14152 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 60124 event pairs, 3041 based on Foata normal form. 2/11022 useless extension candidates. Maximal degree in co-relation 27805. Up to 5226 conditions per place. [2024-10-31 22:00:21,915 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 152 selfloop transitions, 28 changer transitions 8/189 dead transitions. [2024-10-31 22:00:21,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 189 transitions, 1270 flow [2024-10-31 22:00:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:00:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:00:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-10-31 22:00:21,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-10-31 22:00:21,920 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 522 flow. Second operand 8 states and 177 transitions. [2024-10-31 22:00:21,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 189 transitions, 1270 flow [2024-10-31 22:00:22,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 189 transitions, 1268 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 22:00:22,027 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 592 flow [2024-10-31 22:00:22,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=592, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-10-31 22:00:22,029 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-10-31 22:00:22,029 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 592 flow [2024-10-31 22:00:22,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:22,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:22,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:22,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:00:22,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddb429e-eade-4493-82cb-761943826407/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:22,235 INFO L396 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)] === [2024-10-31 22:00:22,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:22,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1253818341, now seen corresponding path program 2 times [2024-10-31 22:00:22,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:22,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418133668] [2024-10-31 22:00:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:22,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:22,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:22,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418133668] [2024-10-31 22:00:22,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418133668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:22,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:22,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:00:22,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528786538] [2024-10-31 22:00:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:22,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:00:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:00:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:00:22,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:22,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:22,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:22,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:22,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:25,332 INFO L124 PetriNetUnfolderBase]: 13193/18642 cut-off events. [2024-10-31 22:00:25,332 INFO L125 PetriNetUnfolderBase]: For 25472/25472 co-relation queries the response was YES. [2024-10-31 22:00:25,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53251 conditions, 18642 events. 13193/18642 cut-off events. For 25472/25472 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 105917 event pairs, 2626 based on Foata normal form. 2/18038 useless extension candidates. Maximal degree in co-relation 48752. Up to 4686 conditions per place. [2024-10-31 22:00:25,441 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 209 selfloop transitions, 28 changer transitions 17/255 dead transitions. [2024-10-31 22:00:25,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 255 transitions, 2058 flow [2024-10-31 22:00:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:00:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:00:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-10-31 22:00:25,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-10-31 22:00:25,445 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 592 flow. Second operand 10 states and 204 transitions. [2024-10-31 22:00:25,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 255 transitions, 2058 flow [2024-10-31 22:00:25,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 255 transitions, 1975 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-31 22:00:25,591 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 836 flow [2024-10-31 22:00:25,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=836, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-10-31 22:00:25,592 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 61 predicate places. [2024-10-31 22:00:25,592 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 836 flow [2024-10-31 22:00:25,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:25,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:25,593 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:25,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:00:25,593 INFO L396 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)] === [2024-10-31 22:00:25,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash -138598625, now seen corresponding path program 3 times [2024-10-31 22:00:25,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:25,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063680402] [2024-10-31 22:00:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:25,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:00:25,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:25,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063680402] [2024-10-31 22:00:25,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063680402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:25,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:25,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:00:25,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155253535] [2024-10-31 22:00:25,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:25,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:00:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:00:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:00:25,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:25,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 836 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:25,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:25,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:25,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:28,050 INFO L124 PetriNetUnfolderBase]: 12401/17537 cut-off events. [2024-10-31 22:00:28,051 INFO L125 PetriNetUnfolderBase]: For 31675/31675 co-relation queries the response was YES. [2024-10-31 22:00:28,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54180 conditions, 17537 events. 12401/17537 cut-off events. For 31675/31675 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 98554 event pairs, 4094 based on Foata normal form. 2/16987 useless extension candidates. Maximal degree in co-relation 42041. Up to 5047 conditions per place. [2024-10-31 22:00:28,143 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 177 selfloop transitions, 32 changer transitions 24/234 dead transitions. [2024-10-31 22:00:28,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 234 transitions, 2021 flow [2024-10-31 22:00:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:00:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:00:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-10-31 22:00:28,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2024-10-31 22:00:28,146 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 836 flow. Second operand 9 states and 187 transitions. [2024-10-31 22:00:28,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 234 transitions, 2021 flow [2024-10-31 22:00:28,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 234 transitions, 1994 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-31 22:00:28,313 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 1065 flow [2024-10-31 22:00:28,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1065, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-10-31 22:00:28,314 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 70 predicate places. [2024-10-31 22:00:28,314 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 1065 flow [2024-10-31 22:00:28,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:28,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:28,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:28,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:00:28,315 INFO L396 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)] === [2024-10-31 22:00:28,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -625530116, now seen corresponding path program 1 times [2024-10-31 22:00:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:28,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420927647] [2024-10-31 22:00:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:00:28,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420927647] [2024-10-31 22:00:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420927647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:28,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:28,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:00:28,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79543955] [2024-10-31 22:00:28,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:28,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:00:28,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:00:28,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:00:28,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-31 22:00:28,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 1065 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:28,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:28,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-31 22:00:28,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand