./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB --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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:53:17,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:53:17,408 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:53:17,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:53:17,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:53:17,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:53:17,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:53:17,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:53:17,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:53:17,464 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:53:17,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:53:17,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:53:17,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:53:17,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:53:17,466 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:53:17,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:53:17,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:53:17,467 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:53:17,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:53:17,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:53:17,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:53:17,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:53:17,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:53:17,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:53:17,468 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:53:17,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:53:17,469 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:53:17,469 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:53:17,469 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:53:17,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:53:17,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:53:17,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:53:17,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:53:17,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:53:17,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:53:17,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:53:17,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:53:17,470 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-28 02:53:17,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:53:17,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:53:17,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:53:17,821 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:53:17,821 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:53:17,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-28 02:53:20,970 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/data/e4da986c1/bf511409ac5449579bbcaf7e443a11d6/FLAG6005faf87 [2024-11-28 02:53:21,265 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:53:21,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-28 02:53:21,276 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/data/e4da986c1/bf511409ac5449579bbcaf7e443a11d6/FLAG6005faf87 [2024-11-28 02:53:21,294 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/data/e4da986c1/bf511409ac5449579bbcaf7e443a11d6 [2024-11-28 02:53:21,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:53:21,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:53:21,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:53:21,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:53:21,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:53:21,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b671f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21, skipping insertion in model container [2024-11-28 02:53:21,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,327 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:53:21,580 WARN L250 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_de180f7c-b231-4fa1-b18f-8061e58597f5/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-28 02:53:21,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:53:21,597 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:53:21,635 WARN L250 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_de180f7c-b231-4fa1-b18f-8061e58597f5/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-28 02:53:21,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:53:21,664 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:53:21,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21 WrapperNode [2024-11-28 02:53:21,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:53:21,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:53:21,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:53:21,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:53:21,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,719 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-11-28 02:53:21,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:53:21,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:53:21,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:53:21,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:53:21,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,765 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:53:21,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,775 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:53:21,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:53:21,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:53:21,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:53:21,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (1/1) ... [2024-11-28 02:53:21,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:53:21,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:21,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:53:21,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:53:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:53:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:53:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:53:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:53:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:53:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:53:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:53:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 02:53:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 02:53:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:53:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:53:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:53:21,884 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:53:22,014 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:53:22,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:53:22,351 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:53:22,351 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:53:22,553 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:53:22,553 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:53:22,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:22 BoogieIcfgContainer [2024-11-28 02:53:22,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:53:22,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:53:22,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:53:22,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:53:22,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:53:21" (1/3) ... [2024-11-28 02:53:22,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6012508a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:53:22, skipping insertion in model container [2024-11-28 02:53:22,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:21" (2/3) ... [2024-11-28 02:53:22,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6012508a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:53:22, skipping insertion in model container [2024-11-28 02:53:22,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:22" (3/3) ... [2024-11-28 02:53:22,566 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-28 02:53:22,585 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:53:22,588 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-difference-det.wvr.c that has 5 procedures, 37 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:53:22,588 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:53:22,694 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:53:22,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-28 02:53:22,807 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-28 02:53:22,810 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:53:22,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-28 02:53:22,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-28 02:53:22,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-28 02:53:22,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:53:22,863 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;@622afc9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:53:22,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 02:53:22,909 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:53:22,913 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-28 02:53:22,913 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:53:22,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:22,914 INFO L206 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] [2024-11-28 02:53:22,915 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 2 more)] === [2024-11-28 02:53:22,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash -404565410, now seen corresponding path program 1 times [2024-11-28 02:53:22,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:22,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627175508] [2024-11-28 02:53:22,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:22,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:23,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:23,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627175508] [2024-11-28 02:53:23,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627175508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:23,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:23,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:53:23,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885325443] [2024-11-28 02:53:23,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:23,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:23,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:23,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:23,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-28 02:53:23,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:23,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:23,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-28 02:53:23,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:24,455 INFO L124 PetriNetUnfolderBase]: 4206/5690 cut-off events. [2024-11-28 02:53:24,457 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-11-28 02:53:24,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 5690 events. 4206/5690 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24119 event pairs, 1080 based on Foata normal form. 1/5300 useless extension candidates. Maximal degree in co-relation 10315. Up to 4714 conditions per place. [2024-11-28 02:53:24,519 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-28 02:53:24,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-28 02:53:24,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:53:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-28 02:53:24,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-11-28 02:53:24,543 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 77 transitions. [2024-11-28 02:53:24,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-28 02:53:24,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 02:53:24,573 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-28 02:53:24,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-28 02:53:24,583 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-28 02:53:24,583 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-28 02:53:24,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:24,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:24,583 INFO L206 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] [2024-11-28 02:53:24,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:53:24,586 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 2 more)] === [2024-11-28 02:53:24,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash 991363082, now seen corresponding path program 1 times [2024-11-28 02:53:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:24,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001605422] [2024-11-28 02:53:24,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:24,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:24,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001605422] [2024-11-28 02:53:24,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001605422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:24,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:24,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:53:24,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484697780] [2024-11-28 02:53:24,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:24,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:53:24,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:24,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:53:24,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:53:24,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-28 02:53:24,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:24,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:24,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-28 02:53:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:26,388 INFO L124 PetriNetUnfolderBase]: 8890/11757 cut-off events. [2024-11-28 02:53:26,388 INFO L125 PetriNetUnfolderBase]: For 1495/1520 co-relation queries the response was YES. [2024-11-28 02:53:26,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26035 conditions, 11757 events. 8890/11757 cut-off events. For 1495/1520 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55479 event pairs, 2934 based on Foata normal form. 0/11130 useless extension candidates. Maximal degree in co-relation 3736. Up to 6812 conditions per place. [2024-11-28 02:53:26,466 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 89 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2024-11-28 02:53:26,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 101 transitions, 464 flow [2024-11-28 02:53:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:53:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:53:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-28 02:53:26,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-28 02:53:26,468 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 125 transitions. [2024-11-28 02:53:26,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 101 transitions, 464 flow [2024-11-28 02:53:26,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:53:26,474 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 156 flow [2024-11-28 02:53:26,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-28 02:53:26,475 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-28 02:53:26,477 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 156 flow [2024-11-28 02:53:26,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:26,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:26,478 INFO L206 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] [2024-11-28 02:53:26,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:53:26,478 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 2 more)] === [2024-11-28 02:53:26,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:26,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1785009648, now seen corresponding path program 2 times [2024-11-28 02:53:26,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:26,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589270115] [2024-11-28 02:53:26,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:26,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:26,522 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:26,522 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:26,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:26,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589270115] [2024-11-28 02:53:26,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589270115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:26,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528276425] [2024-11-28 02:53:26,746 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:26,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:26,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:26,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:26,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:53:26,872 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:26,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:26,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:53:26,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:26,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:27,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528276425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:27,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:27,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 02:53:27,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124794636] [2024-11-28 02:53:27,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:27,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:53:27,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:27,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:53:27,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:53:27,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-28 02:53:27,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:27,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:27,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-28 02:53:27,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:29,886 INFO L124 PetriNetUnfolderBase]: 15902/20779 cut-off events. [2024-11-28 02:53:29,887 INFO L125 PetriNetUnfolderBase]: For 6679/6679 co-relation queries the response was YES. [2024-11-28 02:53:29,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53356 conditions, 20779 events. 15902/20779 cut-off events. For 6679/6679 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 100595 event pairs, 1195 based on Foata normal form. 354/21133 useless extension candidates. Maximal degree in co-relation 27004. Up to 3779 conditions per place. [2024-11-28 02:53:30,092 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 245 selfloop transitions, 35 changer transitions 1/282 dead transitions. [2024-11-28 02:53:30,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 282 transitions, 1380 flow [2024-11-28 02:53:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:53:30,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:53:30,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 338 transitions. [2024-11-28 02:53:30,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-11-28 02:53:30,096 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 156 flow. Second operand 14 states and 338 transitions. [2024-11-28 02:53:30,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 282 transitions, 1380 flow [2024-11-28 02:53:30,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 282 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:53:30,113 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 389 flow [2024-11-28 02:53:30,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2024-11-28 02:53:30,114 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-28 02:53:30,115 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 389 flow [2024-11-28 02:53:30,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:30,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:30,115 INFO L206 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] [2024-11-28 02:53:30,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:53:30,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:30,320 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 2 more)] === [2024-11-28 02:53:30,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:30,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1614519468, now seen corresponding path program 3 times [2024-11-28 02:53:30,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:30,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852435288] [2024-11-28 02:53:30,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:30,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:30,356 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:53:30,357 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:30,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:30,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852435288] [2024-11-28 02:53:30,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852435288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:30,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:30,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:53:30,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560360173] [2024-11-28 02:53:30,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:30,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:53:30,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:30,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:53:30,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:53:30,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-28 02:53:30,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:30,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:30,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-28 02:53:30,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:33,106 INFO L124 PetriNetUnfolderBase]: 19677/26113 cut-off events. [2024-11-28 02:53:33,106 INFO L125 PetriNetUnfolderBase]: For 36116/36187 co-relation queries the response was YES. [2024-11-28 02:53:33,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79954 conditions, 26113 events. 19677/26113 cut-off events. For 36116/36187 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 134087 event pairs, 7064 based on Foata normal form. 77/26098 useless extension candidates. Maximal degree in co-relation 61847. Up to 13128 conditions per place. [2024-11-28 02:53:33,279 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 108 selfloop transitions, 17 changer transitions 10/144 dead transitions. [2024-11-28 02:53:33,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 144 transitions, 963 flow [2024-11-28 02:53:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:53:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:53:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-28 02:53:33,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-11-28 02:53:33,282 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 389 flow. Second operand 5 states and 118 transitions. [2024-11-28 02:53:33,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 144 transitions, 963 flow [2024-11-28 02:53:33,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 144 transitions, 916 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-11-28 02:53:33,721 INFO L231 Difference]: Finished difference. Result has 70 places, 79 transitions, 466 flow [2024-11-28 02:53:33,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2024-11-28 02:53:33,722 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-11-28 02:53:33,722 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 466 flow [2024-11-28 02:53:33,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:33,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:33,723 INFO L206 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] [2024-11-28 02:53:33,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:53:33,723 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 2 more)] === [2024-11-28 02:53:33,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1001958362, now seen corresponding path program 1 times [2024-11-28 02:53:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987590884] [2024-11-28 02:53:33,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:33,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:33,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:33,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987590884] [2024-11-28 02:53:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987590884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:53:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117925776] [2024-11-28 02:53:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:33,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:53:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:33,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:53:33,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:53:33,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-28 02:53:33,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 466 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:33,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:33,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-28 02:53:33,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:35,724 INFO L124 PetriNetUnfolderBase]: 18297/24105 cut-off events. [2024-11-28 02:53:35,724 INFO L125 PetriNetUnfolderBase]: For 35529/35625 co-relation queries the response was YES. [2024-11-28 02:53:35,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74977 conditions, 24105 events. 18297/24105 cut-off events. For 35529/35625 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 121461 event pairs, 5968 based on Foata normal form. 36/24138 useless extension candidates. Maximal degree in co-relation 68459. Up to 13326 conditions per place. [2024-11-28 02:53:35,990 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 109 selfloop transitions, 12 changer transitions 16/141 dead transitions. [2024-11-28 02:53:35,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 141 transitions, 959 flow [2024-11-28 02:53:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:53:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:53:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-28 02:53:35,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-28 02:53:35,995 INFO L175 Difference]: Start difference. First operand has 70 places, 79 transitions, 466 flow. Second operand 5 states and 126 transitions. [2024-11-28 02:53:35,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 141 transitions, 959 flow [2024-11-28 02:53:36,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 141 transitions, 916 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-28 02:53:36,527 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 471 flow [2024-11-28 02:53:36,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2024-11-28 02:53:36,529 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-11-28 02:53:36,529 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 471 flow [2024-11-28 02:53:36,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:36,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:36,529 INFO L206 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] [2024-11-28 02:53:36,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:53:36,530 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 2 more)] === [2024-11-28 02:53:36,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:36,531 INFO L85 PathProgramCache]: Analyzing trace with hash 149959816, now seen corresponding path program 2 times [2024-11-28 02:53:36,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:36,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762856853] [2024-11-28 02:53:36,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:36,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:36,559 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:53:36,560 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:36,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762856853] [2024-11-28 02:53:36,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762856853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:36,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:36,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:53:36,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405406168] [2024-11-28 02:53:36,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:36,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:53:36,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:36,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:53:36,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:53:36,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-28 02:53:36,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:36,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:36,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-28 02:53:36,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:38,817 INFO L124 PetriNetUnfolderBase]: 21054/27824 cut-off events. [2024-11-28 02:53:38,817 INFO L125 PetriNetUnfolderBase]: For 42224/42224 co-relation queries the response was YES. [2024-11-28 02:53:38,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85479 conditions, 27824 events. 21054/27824 cut-off events. For 42224/42224 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 143153 event pairs, 2376 based on Foata normal form. 324/28143 useless extension candidates. Maximal degree in co-relation 74472. Up to 10234 conditions per place. [2024-11-28 02:53:39,105 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 159 selfloop transitions, 33 changer transitions 1/197 dead transitions. [2024-11-28 02:53:39,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 197 transitions, 1323 flow [2024-11-28 02:53:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-11-28 02:53:39,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6321428571428571 [2024-11-28 02:53:39,108 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 471 flow. Second operand 7 states and 177 transitions. [2024-11-28 02:53:39,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 197 transitions, 1323 flow [2024-11-28 02:53:39,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 197 transitions, 1274 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-28 02:53:39,381 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 653 flow [2024-11-28 02:53:39,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2024-11-28 02:53:39,382 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-11-28 02:53:39,382 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 653 flow [2024-11-28 02:53:39,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:39,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:39,382 INFO L206 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] [2024-11-28 02:53:39,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:53:39,383 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 2 more)] === [2024-11-28 02:53:39,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash 129131734, now seen corresponding path program 4 times [2024-11-28 02:53:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:39,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931075292] [2024-11-28 02:53:39,383 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:39,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:39,397 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:39,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:39,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:39,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931075292] [2024-11-28 02:53:39,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931075292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:39,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:39,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:53:39,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590180439] [2024-11-28 02:53:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:39,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:53:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:39,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:53:39,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:53:39,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-28 02:53:39,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 653 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:39,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:39,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-28 02:53:39,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:42,063 INFO L124 PetriNetUnfolderBase]: 27494/35793 cut-off events. [2024-11-28 02:53:42,063 INFO L125 PetriNetUnfolderBase]: For 78042/78042 co-relation queries the response was YES. [2024-11-28 02:53:42,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116336 conditions, 35793 events. 27494/35793 cut-off events. For 78042/78042 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 179044 event pairs, 3997 based on Foata normal form. 354/36147 useless extension candidates. Maximal degree in co-relation 110940. Up to 9539 conditions per place. [2024-11-28 02:53:42,245 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 139 selfloop transitions, 51 changer transitions 1/192 dead transitions. [2024-11-28 02:53:42,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 192 transitions, 1389 flow [2024-11-28 02:53:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-11-28 02:53:42,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-28 02:53:42,247 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 653 flow. Second operand 7 states and 166 transitions. [2024-11-28 02:53:42,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 192 transitions, 1389 flow [2024-11-28 02:53:42,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 192 transitions, 1346 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-28 02:53:42,628 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 889 flow [2024-11-28 02:53:42,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=889, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-11-28 02:53:42,629 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-11-28 02:53:42,629 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 889 flow [2024-11-28 02:53:42,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:42,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:42,629 INFO L206 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] [2024-11-28 02:53:42,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:53:42,630 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 2 more)] === [2024-11-28 02:53:42,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:42,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1680767130, now seen corresponding path program 5 times [2024-11-28 02:53:42,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:42,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713780512] [2024-11-28 02:53:42,631 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:42,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:42,650 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:42,650 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:42,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713780512] [2024-11-28 02:53:42,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713780512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:42,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706101918] [2024-11-28 02:53:42,732 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:42,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:42,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:42,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:42,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:53:42,833 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:42,834 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:42,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:53:42,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:42,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:42,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706101918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:42,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:42,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 02:53:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137834605] [2024-11-28 02:53:42,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:42,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:42,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:42,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:42,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-28 02:53:42,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 889 flow. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:42,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:42,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-28 02:53:42,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:46,309 INFO L124 PetriNetUnfolderBase]: 27097/35372 cut-off events. [2024-11-28 02:53:46,310 INFO L125 PetriNetUnfolderBase]: For 107830/107830 co-relation queries the response was YES. [2024-11-28 02:53:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123875 conditions, 35372 events. 27097/35372 cut-off events. For 107830/107830 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 176060 event pairs, 6753 based on Foata normal form. 354/35726 useless extension candidates. Maximal degree in co-relation 112793. Up to 11513 conditions per place. [2024-11-28 02:53:46,506 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 148 selfloop transitions, 47 changer transitions 1/197 dead transitions. [2024-11-28 02:53:46,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 197 transitions, 1668 flow [2024-11-28 02:53:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-11-28 02:53:46,508 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2024-11-28 02:53:46,508 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 889 flow. Second operand 7 states and 167 transitions. [2024-11-28 02:53:46,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 197 transitions, 1668 flow [2024-11-28 02:53:47,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 197 transitions, 1652 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 02:53:47,713 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 1088 flow [2024-11-28 02:53:47,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1088, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2024-11-28 02:53:47,714 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2024-11-28 02:53:47,715 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 1088 flow [2024-11-28 02:53:47,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:47,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:47,715 INFO L206 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] [2024-11-28 02:53:47,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:53:47,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:47,916 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 2 more)] === [2024-11-28 02:53:47,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash 895924580, now seen corresponding path program 3 times [2024-11-28 02:53:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:47,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82711082] [2024-11-28 02:53:47,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:47,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:47,937 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:53:47,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82711082] [2024-11-28 02:53:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82711082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452136262] [2024-11-28 02:53:48,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:48,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:48,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:48,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:48,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:53:48,149 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:53:48,150 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:48,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:53:48,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:48,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:48,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452136262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:48,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:48,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 02:53:48,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815183958] [2024-11-28 02:53:48,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:48,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:53:48,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:48,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:53:48,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:53:48,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-28 02:53:48,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 1088 flow. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:48,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:48,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-28 02:53:48,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:52,066 INFO L124 PetriNetUnfolderBase]: 29104/37955 cut-off events. [2024-11-28 02:53:52,066 INFO L125 PetriNetUnfolderBase]: For 131257/131257 co-relation queries the response was YES. [2024-11-28 02:53:52,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139202 conditions, 37955 events. 29104/37955 cut-off events. For 131257/131257 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 195162 event pairs, 6364 based on Foata normal form. 324/38279 useless extension candidates. Maximal degree in co-relation 128135. Up to 14721 conditions per place. [2024-11-28 02:53:52,611 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 191 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2024-11-28 02:53:52,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 226 transitions, 2015 flow [2024-11-28 02:53:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:53:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:53:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-11-28 02:53:52,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615625 [2024-11-28 02:53:52,613 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 1088 flow. Second operand 8 states and 197 transitions. [2024-11-28 02:53:52,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 226 transitions, 2015 flow [2024-11-28 02:53:53,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 226 transitions, 1836 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-11-28 02:53:53,286 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 1061 flow [2024-11-28 02:53:53,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1061, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2024-11-28 02:53:53,287 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-11-28 02:53:53,287 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 1061 flow [2024-11-28 02:53:53,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:53,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:53,288 INFO L206 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] [2024-11-28 02:53:53,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:53:53,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:53,492 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 2 more)] === [2024-11-28 02:53:53,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash -735439858, now seen corresponding path program 4 times [2024-11-28 02:53:53,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:53,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010118345] [2024-11-28 02:53:53,495 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:53,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:53,512 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:53,512 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:53,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010118345] [2024-11-28 02:53:53,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010118345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:53,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:53,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:53:53,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512640824] [2024-11-28 02:53:53,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:53,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:53:53,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:53,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:53:53,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:53:53,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-28 02:53:53,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 1061 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:53,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:53,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-28 02:53:53,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:56,767 INFO L124 PetriNetUnfolderBase]: 29137/38024 cut-off events. [2024-11-28 02:53:56,767 INFO L125 PetriNetUnfolderBase]: For 120098/120098 co-relation queries the response was YES. [2024-11-28 02:53:56,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138834 conditions, 38024 events. 29137/38024 cut-off events. For 120098/120098 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 193486 event pairs, 10444 based on Foata normal form. 36/38060 useless extension candidates. Maximal degree in co-relation 116618. Up to 23125 conditions per place. [2024-11-28 02:53:57,009 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 130 selfloop transitions, 22 changer transitions 10/163 dead transitions. [2024-11-28 02:53:57,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 163 transitions, 1562 flow [2024-11-28 02:53:57,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:53:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:53:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-28 02:53:57,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-28 02:53:57,011 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 1061 flow. Second operand 5 states and 116 transitions. [2024-11-28 02:53:57,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 163 transitions, 1562 flow [2024-11-28 02:53:57,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 163 transitions, 1473 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-28 02:53:57,609 INFO L231 Difference]: Finished difference. Result has 96 places, 110 transitions, 1012 flow [2024-11-28 02:53:57,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1012, PETRI_PLACES=96, PETRI_TRANSITIONS=110} [2024-11-28 02:53:57,610 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2024-11-28 02:53:57,610 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 110 transitions, 1012 flow [2024-11-28 02:53:57,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:57,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:57,610 INFO L206 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] [2024-11-28 02:53:57,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:53:57,610 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 2 more)] === [2024-11-28 02:53:57,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1895752778, now seen corresponding path program 5 times [2024-11-28 02:53:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:57,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284712602] [2024-11-28 02:53:57,611 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:57,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:57,632 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:57,632 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:57,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:57,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284712602] [2024-11-28 02:53:57,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284712602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994507845] [2024-11-28 02:53:57,845 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:57,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:57,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:57,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:53:57,931 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:57,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:57,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:53:57,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:58,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:58,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994507845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:58,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 02:53:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510968234] [2024-11-28 02:53:58,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:58,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:53:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:58,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:53:58,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:53:58,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-28 02:53:58,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 110 transitions, 1012 flow. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:58,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:58,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-28 02:53:58,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:01,413 INFO L124 PetriNetUnfolderBase]: 28165/36998 cut-off events. [2024-11-28 02:54:01,413 INFO L125 PetriNetUnfolderBase]: For 106903/106903 co-relation queries the response was YES. [2024-11-28 02:54:01,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129990 conditions, 36998 events. 28165/36998 cut-off events. For 106903/106903 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 189425 event pairs, 2628 based on Foata normal form. 813/37811 useless extension candidates. Maximal degree in co-relation 103113. Up to 7810 conditions per place. [2024-11-28 02:54:01,609 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 270 selfloop transitions, 74 changer transitions 1/346 dead transitions. [2024-11-28 02:54:01,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 346 transitions, 2685 flow [2024-11-28 02:54:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:54:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:54:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-11-28 02:54:01,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-28 02:54:01,611 INFO L175 Difference]: Start difference. First operand has 96 places, 110 transitions, 1012 flow. Second operand 15 states and 333 transitions. [2024-11-28 02:54:01,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 346 transitions, 2685 flow [2024-11-28 02:54:02,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 346 transitions, 2519 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-11-28 02:54:02,300 INFO L231 Difference]: Finished difference. Result has 112 places, 150 transitions, 1459 flow [2024-11-28 02:54:02,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1459, PETRI_PLACES=112, PETRI_TRANSITIONS=150} [2024-11-28 02:54:02,301 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2024-11-28 02:54:02,301 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 150 transitions, 1459 flow [2024-11-28 02:54:02,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:02,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:02,301 INFO L206 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] [2024-11-28 02:54:02,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:54:02,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:54:02,502 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 2 more)] === [2024-11-28 02:54:02,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1673061980, now seen corresponding path program 6 times [2024-11-28 02:54:02,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:02,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271883229] [2024-11-28 02:54:02,503 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:54:02,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:02,513 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:54:02,513 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:02,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:02,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271883229] [2024-11-28 02:54:02,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271883229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:02,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:02,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:54:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711025583] [2024-11-28 02:54:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:02,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:54:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:02,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:54:02,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:54:02,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-28 02:54:02,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 150 transitions, 1459 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:02,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:02,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-28 02:54:02,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:05,370 INFO L124 PetriNetUnfolderBase]: 24410/32643 cut-off events. [2024-11-28 02:54:05,371 INFO L125 PetriNetUnfolderBase]: For 130878/131057 co-relation queries the response was YES. [2024-11-28 02:54:05,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129607 conditions, 32643 events. 24410/32643 cut-off events. For 130878/131057 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 177356 event pairs, 8671 based on Foata normal form. 24/32459 useless extension candidates. Maximal degree in co-relation 112460. Up to 19880 conditions per place. [2024-11-28 02:54:05,941 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 136 selfloop transitions, 29 changer transitions 8/195 dead transitions. [2024-11-28 02:54:05,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 195 transitions, 1984 flow [2024-11-28 02:54:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:05,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:54:05,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-28 02:54:05,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.565 [2024-11-28 02:54:05,943 INFO L175 Difference]: Start difference. First operand has 112 places, 150 transitions, 1459 flow. Second operand 5 states and 113 transitions. [2024-11-28 02:54:05,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 195 transitions, 1984 flow [2024-11-28 02:54:06,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 195 transitions, 1932 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-11-28 02:54:06,785 INFO L231 Difference]: Finished difference. Result has 116 places, 150 transitions, 1489 flow [2024-11-28 02:54:06,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1489, PETRI_PLACES=116, PETRI_TRANSITIONS=150} [2024-11-28 02:54:06,786 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-11-28 02:54:06,786 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 150 transitions, 1489 flow [2024-11-28 02:54:06,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:06,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:06,786 INFO L206 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] [2024-11-28 02:54:06,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:54:06,786 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 2 more)] === [2024-11-28 02:54:06,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2016105090, now seen corresponding path program 6 times [2024-11-28 02:54:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474552625] [2024-11-28 02:54:06,787 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:54:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:06,797 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:54:06,797 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:06,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:06,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474552625] [2024-11-28 02:54:06,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474552625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:06,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:06,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:54:06,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842147085] [2024-11-28 02:54:06,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:06,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:54:06,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:06,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:54:06,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:54:06,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-28 02:54:06,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 150 transitions, 1489 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:06,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:06,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-28 02:54:06,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:09,370 INFO L124 PetriNetUnfolderBase]: 23262/30932 cut-off events. [2024-11-28 02:54:09,370 INFO L125 PetriNetUnfolderBase]: For 128148/128301 co-relation queries the response was YES. [2024-11-28 02:54:09,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123726 conditions, 30932 events. 23262/30932 cut-off events. For 128148/128301 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 163011 event pairs, 8692 based on Foata normal form. 70/30941 useless extension candidates. Maximal degree in co-relation 104508. Up to 18777 conditions per place. [2024-11-28 02:54:09,573 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 134 selfloop transitions, 28 changer transitions 10/192 dead transitions. [2024-11-28 02:54:09,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 192 transitions, 1965 flow [2024-11-28 02:54:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:09,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:54:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-28 02:54:09,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-28 02:54:09,575 INFO L175 Difference]: Start difference. First operand has 116 places, 150 transitions, 1489 flow. Second operand 5 states and 114 transitions. [2024-11-28 02:54:09,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 192 transitions, 1965 flow [2024-11-28 02:54:10,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 192 transitions, 1940 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 02:54:10,356 INFO L231 Difference]: Finished difference. Result has 117 places, 149 transitions, 1501 flow [2024-11-28 02:54:10,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1501, PETRI_PLACES=117, PETRI_TRANSITIONS=149} [2024-11-28 02:54:10,357 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 73 predicate places. [2024-11-28 02:54:10,357 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 149 transitions, 1501 flow [2024-11-28 02:54:10,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:10,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:10,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:10,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:54:10,358 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 02:54:10,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:10,359 INFO L85 PathProgramCache]: Analyzing trace with hash 426409730, now seen corresponding path program 1 times [2024-11-28 02:54:10,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:10,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671953464] [2024-11-28 02:54:10,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:10,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:10,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:10,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671953464] [2024-11-28 02:54:10,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671953464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:10,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546984666] [2024-11-28 02:54:10,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:10,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:10,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:10,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:10,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:54:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:10,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:54:10,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:10,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:10,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546984666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:10,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:10,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-28 02:54:10,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423736424] [2024-11-28 02:54:10,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:10,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:54:10,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:10,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:54:10,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:54:10,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-28 02:54:10,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 149 transitions, 1501 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:10,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:10,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-28 02:54:10,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:16,677 INFO L124 PetriNetUnfolderBase]: 45802/62162 cut-off events. [2024-11-28 02:54:16,678 INFO L125 PetriNetUnfolderBase]: For 310360/311085 co-relation queries the response was YES. [2024-11-28 02:54:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243621 conditions, 62162 events. 45802/62162 cut-off events. For 310360/311085 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 367356 event pairs, 5742 based on Foata normal form. 1392/63213 useless extension candidates. Maximal degree in co-relation 211159. Up to 26786 conditions per place. [2024-11-28 02:54:17,544 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 343 selfloop transitions, 29 changer transitions 4/417 dead transitions. [2024-11-28 02:54:17,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 417 transitions, 4460 flow [2024-11-28 02:54:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:54:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:54:17,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-11-28 02:54:17,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2024-11-28 02:54:17,546 INFO L175 Difference]: Start difference. First operand has 117 places, 149 transitions, 1501 flow. Second operand 7 states and 209 transitions. [2024-11-28 02:54:17,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 417 transitions, 4460 flow [2024-11-28 02:54:22,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 417 transitions, 4296 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 02:54:22,278 INFO L231 Difference]: Finished difference. Result has 121 places, 171 transitions, 1681 flow [2024-11-28 02:54:22,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1681, PETRI_PLACES=121, PETRI_TRANSITIONS=171} [2024-11-28 02:54:22,278 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 77 predicate places. [2024-11-28 02:54:22,278 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 171 transitions, 1681 flow [2024-11-28 02:54:22,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:22,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:22,279 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:22,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:22,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de180f7c-b231-4fa1-b18f-8061e58597f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:54:22,479 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 02:54:22,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1079913224, now seen corresponding path program 2 times [2024-11-28 02:54:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799301400] [2024-11-28 02:54:22,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:54:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:22,492 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:54:22,492 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:22,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:22,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799301400] [2024-11-28 02:54:22,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799301400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:22,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:22,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:54:22,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361027049] [2024-11-28 02:54:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:22,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:54:22,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:22,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:54:22,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:54:22,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-28 02:54:22,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 171 transitions, 1681 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:22,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:22,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-28 02:54:22,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand