./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.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_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/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_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/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_5da96f40-1931-4378-b3a8-a7c129973bc0/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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:52:32,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:52:32,596 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:52:32,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:52:32,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:52:32,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:52:32,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:52:32,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:52:32,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:52:32,629 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:52:32,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:52:32,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:52:32,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:52:32,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:52:32,630 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:52:32,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:52:32,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:52:32,631 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:52:32,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:52:32,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:52:32,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:52:32,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:52:32,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:52:32,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:52:32,632 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:52:32,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:52:32,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:52:32,632 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:52:32,632 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:52:32,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:52:32,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:52:32,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:52:32,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:32,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:52:32,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:52:32,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:52:32,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:52:32,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:32,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:52:32,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:52:32,634 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_5da96f40-1931-4378-b3a8-a7c129973bc0/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 -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-11-28 02:52:32,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:52:32,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:52:32,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:52:32,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:52:32,991 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:52:32,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-28 02:52:36,200 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/data/caabcd533/2d1175436989409380e6cb67d4ce8ba4/FLAG5b129fdc9 [2024-11-28 02:52:36,511 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:52:36,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-28 02:52:36,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/data/caabcd533/2d1175436989409380e6cb67d4ce8ba4/FLAG5b129fdc9 [2024-11-28 02:52:36,537 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/data/caabcd533/2d1175436989409380e6cb67d4ce8ba4 [2024-11-28 02:52:36,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:52:36,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:52:36,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:52:36,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:52:36,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:52:36,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:36,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14056dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36, skipping insertion in model container [2024-11-28 02:52:36,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:36,571 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:52:36,794 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_5da96f40-1931-4378-b3a8-a7c129973bc0/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2508,2521] [2024-11-28 02:52:36,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:52:36,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:52:36,863 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_5da96f40-1931-4378-b3a8-a7c129973bc0/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2508,2521] [2024-11-28 02:52:36,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:52:36,904 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:52:36,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36 WrapperNode [2024-11-28 02:52:36,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:52:36,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:52:36,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:52:36,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:52:36,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:36,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:36,971 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 189 [2024-11-28 02:52:36,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:52:36,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:52:36,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:52:36,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:52:36,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:36,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:36,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,026 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 02:52:37,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,043 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:52:37,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:52:37,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:52:37,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:52:37,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (1/1) ... [2024-11-28 02:52:37,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:37,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:37,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:52:37,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:52:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:52:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:52:37,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:52:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:52:37,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:52:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:52:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:52:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:52:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:52:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:52:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:52:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:52:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:52:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:52:37,167 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 02:52:37,291 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:52:37,293 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:52:37,798 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:52:37,799 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:52:38,287 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:52:38,288 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:52:38,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:38 BoogieIcfgContainer [2024-11-28 02:52:38,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:52:38,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:52:38,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:52:38,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:52:38,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:52:36" (1/3) ... [2024-11-28 02:52:38,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f65fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:38, skipping insertion in model container [2024-11-28 02:52:38,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:36" (2/3) ... [2024-11-28 02:52:38,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f65fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:38, skipping insertion in model container [2024-11-28 02:52:38,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:38" (3/3) ... [2024-11-28 02:52:38,302 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-11-28 02:52:38,325 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:52:38,326 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-symm.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:52:38,327 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:52:38,409 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:52:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-11-28 02:52:38,508 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-28 02:52:38,510 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:52:38,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-28 02:52:38,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-11-28 02:52:38,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-11-28 02:52:38,537 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:52:38,556 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;@1a66ec50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:52:38,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 02:52:38,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:52:38,579 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-11-28 02:52:38,579 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:52:38,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:38,580 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:38,580 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:38,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1172269653, now seen corresponding path program 1 times [2024-11-28 02:52:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:38,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930104] [2024-11-28 02:52:38,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:38,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:39,661 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 02:52:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930104] [2024-11-28 02:52:39,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:39,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:39,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:52:39,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200595009] [2024-11-28 02:52:39,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:39,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:52:39,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:39,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:52:39,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:52:39,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:39,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 02:52:39,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:39,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:39,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:40,228 INFO L124 PetriNetUnfolderBase]: 288/485 cut-off events. [2024-11-28 02:52:40,229 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-28 02:52:40,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 485 events. 288/485 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1759 event pairs, 96 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 536. Up to 178 conditions per place. [2024-11-28 02:52:40,240 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 64 selfloop transitions, 10 changer transitions 1/76 dead transitions. [2024-11-28 02:52:40,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 76 transitions, 344 flow [2024-11-28 02:52:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:52:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:52:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-11-28 02:52:40,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-11-28 02:52:40,264 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 8 states and 100 transitions. [2024-11-28 02:52:40,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 76 transitions, 344 flow [2024-11-28 02:52:40,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 76 transitions, 316 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:52:40,280 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 123 flow [2024-11-28 02:52:40,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2024-11-28 02:52:40,290 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-28 02:52:40,291 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 123 flow [2024-11-28 02:52:40,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 02:52:40,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:40,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:40,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:52:40,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:40,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1200615875, now seen corresponding path program 1 times [2024-11-28 02:52:40,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:40,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810140696] [2024-11-28 02:52:40,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:40,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:40,688 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 02:52:40,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:40,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810140696] [2024-11-28 02:52:40,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810140696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:40,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885770233] [2024-11-28 02:52:40,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:40,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:40,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:40,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:40,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:52:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:40,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:52:40,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:41,155 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 02:52:41,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:41,373 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 02:52:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885770233] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:41,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:52:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 14 [2024-11-28 02:52:41,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625921989] [2024-11-28 02:52:41,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:41,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:52:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:41,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:52:41,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:52:41,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:41,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:41,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:41,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:41,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:41,959 INFO L124 PetriNetUnfolderBase]: 617/1023 cut-off events. [2024-11-28 02:52:41,960 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-28 02:52:41,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1023 events. 617/1023 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4522 event pairs, 279 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 1517. Up to 479 conditions per place. [2024-11-28 02:52:41,972 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 92 selfloop transitions, 12 changer transitions 1/106 dead transitions. [2024-11-28 02:52:41,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 106 transitions, 540 flow [2024-11-28 02:52:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:52:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:52:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-11-28 02:52:41,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-28 02:52:41,976 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 123 flow. Second operand 8 states and 119 transitions. [2024-11-28 02:52:41,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 106 transitions, 540 flow [2024-11-28 02:52:41,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 106 transitions, 536 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-28 02:52:41,981 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 210 flow [2024-11-28 02:52:41,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-11-28 02:52:41,982 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2024-11-28 02:52:41,982 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 210 flow [2024-11-28 02:52:41,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:41,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:41,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:41,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:52:42,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:42,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:42,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1573700745, now seen corresponding path program 2 times [2024-11-28 02:52:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:42,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312445442] [2024-11-28 02:52:42,188 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:52:42,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:42,230 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:52:42,231 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:52:42,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:42,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312445442] [2024-11-28 02:52:42,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312445442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:42,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:42,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:52:42,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391488339] [2024-11-28 02:52:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:42,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:52:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:42,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:52:42,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:52:42,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:42,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:42,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:42,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:42,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:43,082 INFO L124 PetriNetUnfolderBase]: 721/1213 cut-off events. [2024-11-28 02:52:43,082 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-11-28 02:52:43,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3099 conditions, 1213 events. 721/1213 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5702 event pairs, 96 based on Foata normal form. 1/1068 useless extension candidates. Maximal degree in co-relation 2263. Up to 355 conditions per place. [2024-11-28 02:52:43,120 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 70 selfloop transitions, 24 changer transitions 1/96 dead transitions. [2024-11-28 02:52:43,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 578 flow [2024-11-28 02:52:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:52:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:52:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-11-28 02:52:43,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-11-28 02:52:43,122 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 210 flow. Second operand 9 states and 107 transitions. [2024-11-28 02:52:43,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 578 flow [2024-11-28 02:52:43,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 96 transitions, 557 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-28 02:52:43,130 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 343 flow [2024-11-28 02:52:43,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=343, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-11-28 02:52:43,131 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2024-11-28 02:52:43,131 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 343 flow [2024-11-28 02:52:43,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:43,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:43,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:43,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:52:43,133 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:43,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:43,133 INFO L85 PathProgramCache]: Analyzing trace with hash 144966976, now seen corresponding path program 1 times [2024-11-28 02:52:43,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:43,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444445187] [2024-11-28 02:52:43,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:43,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:43,279 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 02:52:43,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444445187] [2024-11-28 02:52:43,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444445187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:43,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:43,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:52:43,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949053021] [2024-11-28 02:52:43,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:43,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:43,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:43,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:43,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:43,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:43,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:43,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:43,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:43,566 INFO L124 PetriNetUnfolderBase]: 556/967 cut-off events. [2024-11-28 02:52:43,566 INFO L125 PetriNetUnfolderBase]: For 1188/1188 co-relation queries the response was YES. [2024-11-28 02:52:43,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2725 conditions, 967 events. 556/967 cut-off events. For 1188/1188 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4490 event pairs, 282 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 1953. Up to 604 conditions per place. [2024-11-28 02:52:43,573 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 72 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-28 02:52:43,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 611 flow [2024-11-28 02:52:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:52:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-28 02:52:43,577 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-28 02:52:43,577 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 343 flow. Second operand 5 states and 69 transitions. [2024-11-28 02:52:43,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 611 flow [2024-11-28 02:52:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 581 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-28 02:52:43,590 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 342 flow [2024-11-28 02:52:43,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-11-28 02:52:43,591 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2024-11-28 02:52:43,592 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 342 flow [2024-11-28 02:52:43,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:43,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:43,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:43,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:52:43,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:43,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash 603646928, now seen corresponding path program 1 times [2024-11-28 02:52:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:43,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550977522] [2024-11-28 02:52:43,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:43,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:43,750 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 02:52:43,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:43,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550977522] [2024-11-28 02:52:43,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550977522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:43,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:43,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:52:43,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903657773] [2024-11-28 02:52:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:43,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:43,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:43,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:43,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:43,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:43,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 342 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:43,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:43,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:43,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:44,010 INFO L124 PetriNetUnfolderBase]: 463/828 cut-off events. [2024-11-28 02:52:44,010 INFO L125 PetriNetUnfolderBase]: For 1188/1188 co-relation queries the response was YES. [2024-11-28 02:52:44,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 828 events. 463/828 cut-off events. For 1188/1188 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3766 event pairs, 254 based on Foata normal form. 0/790 useless extension candidates. Maximal degree in co-relation 1785. Up to 604 conditions per place. [2024-11-28 02:52:44,022 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 59 selfloop transitions, 5 changer transitions 5/70 dead transitions. [2024-11-28 02:52:44,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 540 flow [2024-11-28 02:52:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:52:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-28 02:52:44,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-11-28 02:52:44,028 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 342 flow. Second operand 5 states and 62 transitions. [2024-11-28 02:52:44,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 540 flow [2024-11-28 02:52:44,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 523 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 02:52:44,038 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 309 flow [2024-11-28 02:52:44,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-11-28 02:52:44,040 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2024-11-28 02:52:44,041 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 309 flow [2024-11-28 02:52:44,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:44,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:44,042 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:44,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:52:44,042 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:44,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1648127485, now seen corresponding path program 1 times [2024-11-28 02:52:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:44,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070356750] [2024-11-28 02:52:44,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:44,337 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 02:52:44,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070356750] [2024-11-28 02:52:44,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070356750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829545508] [2024-11-28 02:52:44,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:44,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:44,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:44,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:44,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:52:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:44,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:52:44,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:44,684 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 02:52:44,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:44,835 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 02:52:44,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829545508] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:44,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:52:44,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-11-28 02:52:44,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584412175] [2024-11-28 02:52:44,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:44,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:52:44,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:44,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:52:44,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:52:44,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:44,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:44,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:44,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:44,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:45,143 INFO L124 PetriNetUnfolderBase]: 421/740 cut-off events. [2024-11-28 02:52:45,144 INFO L125 PetriNetUnfolderBase]: For 1038/1038 co-relation queries the response was YES. [2024-11-28 02:52:45,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2124 conditions, 740 events. 421/740 cut-off events. For 1038/1038 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3199 event pairs, 225 based on Foata normal form. 1/739 useless extension candidates. Maximal degree in co-relation 2075. Up to 604 conditions per place. [2024-11-28 02:52:45,150 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 56 selfloop transitions, 5 changer transitions 11/73 dead transitions. [2024-11-28 02:52:45,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 524 flow [2024-11-28 02:52:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:52:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:52:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-28 02:52:45,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-28 02:52:45,152 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 309 flow. Second operand 7 states and 77 transitions. [2024-11-28 02:52:45,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 524 flow [2024-11-28 02:52:45,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 494 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-28 02:52:45,158 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 274 flow [2024-11-28 02:52:45,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-11-28 02:52:45,159 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2024-11-28 02:52:45,160 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 274 flow [2024-11-28 02:52:45,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:45,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:45,161 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:45,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:52:45,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:45,365 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:45,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1828576263, now seen corresponding path program 2 times [2024-11-28 02:52:45,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:45,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047258208] [2024-11-28 02:52:45,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:52:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:45,387 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:52:45,387 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:52:45,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:45,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047258208] [2024-11-28 02:52:45,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047258208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:45,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:45,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:52:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176961003] [2024-11-28 02:52:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:45,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:52:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:45,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:52:45,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:52:45,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:45,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:45,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:45,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:45,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:45,917 INFO L124 PetriNetUnfolderBase]: 388/670 cut-off events. [2024-11-28 02:52:45,917 INFO L125 PetriNetUnfolderBase]: For 746/746 co-relation queries the response was YES. [2024-11-28 02:52:45,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 670 events. 388/670 cut-off events. For 746/746 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2777 event pairs, 114 based on Foata normal form. 1/669 useless extension candidates. Maximal degree in co-relation 1860. Up to 589 conditions per place. [2024-11-28 02:52:45,923 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 38 selfloop transitions, 6 changer transitions 20/65 dead transitions. [2024-11-28 02:52:45,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 453 flow [2024-11-28 02:52:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:52:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:52:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 74 transitions. [2024-11-28 02:52:45,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33035714285714285 [2024-11-28 02:52:45,925 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 274 flow. Second operand 8 states and 74 transitions. [2024-11-28 02:52:45,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 453 flow [2024-11-28 02:52:45,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 440 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-28 02:52:45,929 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 245 flow [2024-11-28 02:52:45,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=245, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2024-11-28 02:52:45,929 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2024-11-28 02:52:45,930 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 245 flow [2024-11-28 02:52:45,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:45,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:45,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:45,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:52:45,931 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:45,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1938607592, now seen corresponding path program 1 times [2024-11-28 02:52:45,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:45,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071084697] [2024-11-28 02:52:45,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:45,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:52:46,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:46,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071084697] [2024-11-28 02:52:46,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071084697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:46,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:46,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:52:46,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617930390] [2024-11-28 02:52:46,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:46,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:46,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:46,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:46,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:46,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:46,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 245 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:52:46,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:46,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:46,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:46,238 INFO L124 PetriNetUnfolderBase]: 243/427 cut-off events. [2024-11-28 02:52:46,238 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-11-28 02:52:46,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 427 events. 243/427 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1564 event pairs, 96 based on Foata normal form. 25/452 useless extension candidates. Maximal degree in co-relation 1185. Up to 188 conditions per place. [2024-11-28 02:52:46,241 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 48 selfloop transitions, 6 changer transitions 2/57 dead transitions. [2024-11-28 02:52:46,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 379 flow [2024-11-28 02:52:46,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:52:46,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-11-28 02:52:46,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-28 02:52:46,242 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 245 flow. Second operand 5 states and 66 transitions. [2024-11-28 02:52:46,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 379 flow [2024-11-28 02:52:46,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 339 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-11-28 02:52:46,245 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 197 flow [2024-11-28 02:52:46,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-11-28 02:52:46,246 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-28 02:52:46,246 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 197 flow [2024-11-28 02:52:46,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:52:46,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:46,246 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:46,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:52:46,247 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:46,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1636228646, now seen corresponding path program 1 times [2024-11-28 02:52:46,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:46,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283607324] [2024-11-28 02:52:46,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:46,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:52:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:46,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283607324] [2024-11-28 02:52:46,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283607324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:46,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:46,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:52:46,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019252549] [2024-11-28 02:52:46,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:46,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:46,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:46,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:46,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:46,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:46,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:52:46,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:46,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:46,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:46,488 INFO L124 PetriNetUnfolderBase]: 175/316 cut-off events. [2024-11-28 02:52:46,488 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-11-28 02:52:46,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 316 events. 175/316 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1121 event pairs, 78 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 828. Up to 188 conditions per place. [2024-11-28 02:52:46,490 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 26 selfloop transitions, 2 changer transitions 20/49 dead transitions. [2024-11-28 02:52:46,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 294 flow [2024-11-28 02:52:46,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:52:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-28 02:52:46,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-28 02:52:46,491 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 197 flow. Second operand 5 states and 60 transitions. [2024-11-28 02:52:46,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 294 flow [2024-11-28 02:52:46,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 283 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:52:46,493 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 116 flow [2024-11-28 02:52:46,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2024-11-28 02:52:46,494 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-11-28 02:52:46,494 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 116 flow [2024-11-28 02:52:46,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:52:46,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:46,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:46,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:52:46,495 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:46,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1833839653, now seen corresponding path program 1 times [2024-11-28 02:52:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:46,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356078362] [2024-11-28 02:52:46,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:52:46,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356078362] [2024-11-28 02:52:46,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356078362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762773768] [2024-11-28 02:52:46,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:46,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:46,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:46,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:46,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:52:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:46,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:52:46,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:52:46,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:52:47,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762773768] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:47,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:52:47,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-11-28 02:52:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031568413] [2024-11-28 02:52:47,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:47,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:52:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:47,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:52:47,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:52:47,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:47,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 02:52:47,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:47,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:47,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:47,233 INFO L124 PetriNetUnfolderBase]: 159/268 cut-off events. [2024-11-28 02:52:47,233 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-28 02:52:47,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 268 events. 159/268 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 741 event pairs, 48 based on Foata normal form. 11/278 useless extension candidates. Maximal degree in co-relation 713. Up to 133 conditions per place. [2024-11-28 02:52:47,236 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 32 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-11-28 02:52:47,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 240 flow [2024-11-28 02:52:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:52:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:52:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 60 transitions. [2024-11-28 02:52:47,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30612244897959184 [2024-11-28 02:52:47,237 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 116 flow. Second operand 7 states and 60 transitions. [2024-11-28 02:52:47,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 240 flow [2024-11-28 02:52:47,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 212 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-28 02:52:47,239 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 131 flow [2024-11-28 02:52:47,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-11-28 02:52:47,240 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-28 02:52:47,240 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 131 flow [2024-11-28 02:52:47,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 02:52:47,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:47,240 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] [2024-11-28 02:52:47,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:52:47,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:52:47,445 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:47,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1633537292, now seen corresponding path program 1 times [2024-11-28 02:52:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:47,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603380625] [2024-11-28 02:52:47,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:52:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603380625] [2024-11-28 02:52:47,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603380625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903805999] [2024-11-28 02:52:47,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:47,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:47,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:47,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:47,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:52:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:47,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:52:47,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:52:47,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:52:48,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903805999] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:48,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:52:48,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-11-28 02:52:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079790569] [2024-11-28 02:52:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:48,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:52:48,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:48,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:52:48,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:52:48,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:48,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:48,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:48,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:48,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:48,245 INFO L124 PetriNetUnfolderBase]: 227/404 cut-off events. [2024-11-28 02:52:48,245 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-11-28 02:52:48,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 404 events. 227/404 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1396 event pairs, 116 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 1082. Up to 214 conditions per place. [2024-11-28 02:52:48,248 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 36 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-11-28 02:52:48,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 276 flow [2024-11-28 02:52:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:52:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:52:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-11-28 02:52:48,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3163265306122449 [2024-11-28 02:52:48,250 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 131 flow. Second operand 7 states and 62 transitions. [2024-11-28 02:52:48,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 276 flow [2024-11-28 02:52:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 261 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:52:48,252 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 150 flow [2024-11-28 02:52:48,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-11-28 02:52:48,253 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2024-11-28 02:52:48,253 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 150 flow [2024-11-28 02:52:48,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:48,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:48,253 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] [2024-11-28 02:52:48,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:52:48,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:52:48,458 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:48,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:48,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1838504917, now seen corresponding path program 1 times [2024-11-28 02:52:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078257485] [2024-11-28 02:52:48,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:52:49,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:49,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078257485] [2024-11-28 02:52:49,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078257485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:49,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951529095] [2024-11-28 02:52:49,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:49,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:49,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:49,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:49,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:52:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:49,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:52:49,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:49,661 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:52:49,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 24 [2024-11-28 02:52:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:49,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951529095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:49,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:49,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-28 02:52:49,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141103804] [2024-11-28 02:52:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:49,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:52:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:49,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:52:49,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:52:49,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:49,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:49,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:49,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:49,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:50,155 INFO L124 PetriNetUnfolderBase]: 333/599 cut-off events. [2024-11-28 02:52:50,156 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-11-28 02:52:50,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 599 events. 333/599 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2512 event pairs, 139 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 1743. Up to 357 conditions per place. [2024-11-28 02:52:50,160 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 64 selfloop transitions, 7 changer transitions 6/78 dead transitions. [2024-11-28 02:52:50,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 484 flow [2024-11-28 02:52:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:52:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:52:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-28 02:52:50,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-28 02:52:50,163 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 150 flow. Second operand 7 states and 91 transitions. [2024-11-28 02:52:50,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 484 flow [2024-11-28 02:52:50,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 472 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:52:50,166 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 200 flow [2024-11-28 02:52:50,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2024-11-28 02:52:50,167 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-11-28 02:52:50,167 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 200 flow [2024-11-28 02:52:50,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:50,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:50,168 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] [2024-11-28 02:52:50,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:52:50,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:52:50,368 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:50,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash -803194299, now seen corresponding path program 2 times [2024-11-28 02:52:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:50,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303663729] [2024-11-28 02:52:50,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:52:50,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:50,407 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:52:50,409 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:50,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303663729] [2024-11-28 02:52:50,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303663729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:50,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:50,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:52:50,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525798740] [2024-11-28 02:52:50,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:50,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:52:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:50,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:52:50,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:52:50,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:50,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 200 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:50,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:50,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:50,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:51,498 INFO L124 PetriNetUnfolderBase]: 388/697 cut-off events. [2024-11-28 02:52:51,499 INFO L125 PetriNetUnfolderBase]: For 1322/1322 co-relation queries the response was YES. [2024-11-28 02:52:51,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 697 events. 388/697 cut-off events. For 1322/1322 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3033 event pairs, 160 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 2302. Up to 362 conditions per place. [2024-11-28 02:52:51,505 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 55 selfloop transitions, 14 changer transitions 6/76 dead transitions. [2024-11-28 02:52:51,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 534 flow [2024-11-28 02:52:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:52:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:52:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-11-28 02:52:51,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-11-28 02:52:51,506 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 200 flow. Second operand 9 states and 95 transitions. [2024-11-28 02:52:51,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 534 flow [2024-11-28 02:52:51,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 501 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-28 02:52:51,511 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 288 flow [2024-11-28 02:52:51,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=288, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-28 02:52:51,512 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2024-11-28 02:52:51,515 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 288 flow [2024-11-28 02:52:51,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:51,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:51,515 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] [2024-11-28 02:52:51,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:52:51,516 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:51,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:51,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1203832935, now seen corresponding path program 3 times [2024-11-28 02:52:51,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:51,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870489586] [2024-11-28 02:52:51,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:52:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:51,572 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:52:51,573 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:52,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:52,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870489586] [2024-11-28 02:52:52,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870489586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:52,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:52,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:52:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131049850] [2024-11-28 02:52:52,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:52,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:52:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:52,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:52:52,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:52:52,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:52,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 288 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:52,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:52,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:52,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:52,679 INFO L124 PetriNetUnfolderBase]: 424/764 cut-off events. [2024-11-28 02:52:52,679 INFO L125 PetriNetUnfolderBase]: For 1939/1939 co-relation queries the response was YES. [2024-11-28 02:52:52,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 764 events. 424/764 cut-off events. For 1939/1939 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3479 event pairs, 171 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 2726. Up to 370 conditions per place. [2024-11-28 02:52:52,685 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 65 selfloop transitions, 17 changer transitions 6/89 dead transitions. [2024-11-28 02:52:52,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 704 flow [2024-11-28 02:52:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:52:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:52:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-11-28 02:52:52,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-28 02:52:52,687 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 288 flow. Second operand 9 states and 98 transitions. [2024-11-28 02:52:52,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 704 flow [2024-11-28 02:52:52,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 666 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-28 02:52:52,695 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 391 flow [2024-11-28 02:52:52,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=391, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-11-28 02:52:52,697 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-28 02:52:52,697 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 391 flow [2024-11-28 02:52:52,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:52,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:52,698 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] [2024-11-28 02:52:52,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:52:52,698 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:52,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1971122321, now seen corresponding path program 4 times [2024-11-28 02:52:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194031223] [2024-11-28 02:52:52,700 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:52:52,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:52,733 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:52:52,733 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:53,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:53,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194031223] [2024-11-28 02:52:53,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194031223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:53,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:53,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:52:53,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852753663] [2024-11-28 02:52:53,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:53,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:52:53,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:53,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:52:53,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:52:53,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:53,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:53,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:53,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:53,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:53,346 INFO L124 PetriNetUnfolderBase]: 419/759 cut-off events. [2024-11-28 02:52:53,346 INFO L125 PetriNetUnfolderBase]: For 2315/2315 co-relation queries the response was YES. [2024-11-28 02:52:53,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 759 events. 419/759 cut-off events. For 2315/2315 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3444 event pairs, 90 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 2837. Up to 366 conditions per place. [2024-11-28 02:52:53,353 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 58 selfloop transitions, 20 changer transitions 6/85 dead transitions. [2024-11-28 02:52:53,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 710 flow [2024-11-28 02:52:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:52:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:52:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-28 02:52:53,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-28 02:52:53,355 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 391 flow. Second operand 7 states and 91 transitions. [2024-11-28 02:52:53,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 710 flow [2024-11-28 02:52:53,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 658 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-28 02:52:53,363 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 438 flow [2024-11-28 02:52:53,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-11-28 02:52:53,365 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 40 predicate places. [2024-11-28 02:52:53,365 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 438 flow [2024-11-28 02:52:53,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:53,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:53,365 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] [2024-11-28 02:52:53,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:52:53,367 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:53,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:53,367 INFO L85 PathProgramCache]: Analyzing trace with hash -542170615, now seen corresponding path program 5 times [2024-11-28 02:52:53,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:53,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530753075] [2024-11-28 02:52:53,367 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:52:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:53,410 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:52:53,410 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:52:54,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:54,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530753075] [2024-11-28 02:52:54,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530753075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:54,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640403960] [2024-11-28 02:52:54,249 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:52:54,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:54,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:54,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:54,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:52:54,357 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:52:54,358 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:54,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:52:54,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:54,541 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:52:54,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-28 02:52:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:54,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640403960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:54,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:54,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 13 [2024-11-28 02:52:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642839418] [2024-11-28 02:52:54,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:54,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:52:54,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:54,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:52:54,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:52:54,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:54,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 438 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:54,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:54,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:54,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:55,038 INFO L124 PetriNetUnfolderBase]: 409/734 cut-off events. [2024-11-28 02:52:55,038 INFO L125 PetriNetUnfolderBase]: For 2271/2271 co-relation queries the response was YES. [2024-11-28 02:52:55,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2821 conditions, 734 events. 409/734 cut-off events. For 2271/2271 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3280 event pairs, 155 based on Foata normal form. 2/735 useless extension candidates. Maximal degree in co-relation 2782. Up to 370 conditions per place. [2024-11-28 02:52:55,045 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 55 selfloop transitions, 22 changer transitions 7/85 dead transitions. [2024-11-28 02:52:55,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 787 flow [2024-11-28 02:52:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:52:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:52:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-28 02:52:55,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-28 02:52:55,047 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 438 flow. Second operand 9 states and 93 transitions. [2024-11-28 02:52:55,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 787 flow [2024-11-28 02:52:55,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 761 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-28 02:52:55,056 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 504 flow [2024-11-28 02:52:55,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2024-11-28 02:52:55,057 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-11-28 02:52:55,057 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 504 flow [2024-11-28 02:52:55,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:55,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:55,058 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] [2024-11-28 02:52:55,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:52:55,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:52:55,262 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:55,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:55,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1426125765, now seen corresponding path program 6 times [2024-11-28 02:52:55,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:55,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233454447] [2024-11-28 02:52:55,263 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:52:55,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:55,301 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:52:55,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233454447] [2024-11-28 02:52:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233454447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:55,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:55,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:52:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313367276] [2024-11-28 02:52:55,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:55,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:52:55,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:55,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:52:55,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:52:55,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:55,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 504 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:55,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:55,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:55,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:56,306 INFO L124 PetriNetUnfolderBase]: 516/922 cut-off events. [2024-11-28 02:52:56,306 INFO L125 PetriNetUnfolderBase]: For 2931/2931 co-relation queries the response was YES. [2024-11-28 02:52:56,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 922 events. 516/922 cut-off events. For 2931/2931 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4217 event pairs, 224 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 3548. Up to 506 conditions per place. [2024-11-28 02:52:56,314 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 66 selfloop transitions, 19 changer transitions 6/92 dead transitions. [2024-11-28 02:52:56,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 903 flow [2024-11-28 02:52:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:52:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:52:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-11-28 02:52:56,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-11-28 02:52:56,316 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 504 flow. Second operand 10 states and 90 transitions. [2024-11-28 02:52:56,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 903 flow [2024-11-28 02:52:56,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 92 transitions, 841 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-28 02:52:56,326 INFO L231 Difference]: Finished difference. Result has 78 places, 58 transitions, 568 flow [2024-11-28 02:52:56,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=568, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2024-11-28 02:52:56,326 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2024-11-28 02:52:56,327 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 568 flow [2024-11-28 02:52:56,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:56,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:56,327 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] [2024-11-28 02:52:56,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:52:56,327 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:56,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1538591993, now seen corresponding path program 7 times [2024-11-28 02:52:56,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:56,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93908824] [2024-11-28 02:52:56,328 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:52:56,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:52:56,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:56,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93908824] [2024-11-28 02:52:56,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93908824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:56,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596655642] [2024-11-28 02:52:56,983 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:52:56,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:56,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:56,986 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:56,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:52:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:57,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:52:57,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:57,254 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:52:57,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 24 [2024-11-28 02:52:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:57,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596655642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:57,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:57,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2024-11-28 02:52:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403675592] [2024-11-28 02:52:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:57,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:52:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:57,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:52:57,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:52:57,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:57,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 568 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:57,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:57,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:57,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:57,706 INFO L124 PetriNetUnfolderBase]: 512/918 cut-off events. [2024-11-28 02:52:57,706 INFO L125 PetriNetUnfolderBase]: For 3744/3744 co-relation queries the response was YES. [2024-11-28 02:52:57,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 918 events. 512/918 cut-off events. For 3744/3744 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4193 event pairs, 215 based on Foata normal form. 1/919 useless extension candidates. Maximal degree in co-relation 3728. Up to 513 conditions per place. [2024-11-28 02:52:57,715 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 69 selfloop transitions, 21 changer transitions 6/97 dead transitions. [2024-11-28 02:52:57,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 969 flow [2024-11-28 02:52:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:52:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:52:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-28 02:52:57,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-11-28 02:52:57,717 INFO L175 Difference]: Start difference. First operand has 78 places, 58 transitions, 568 flow. Second operand 7 states and 87 transitions. [2024-11-28 02:52:57,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 969 flow [2024-11-28 02:52:57,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 935 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-28 02:52:57,730 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 697 flow [2024-11-28 02:52:57,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=697, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2024-11-28 02:52:57,730 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 57 predicate places. [2024-11-28 02:52:57,730 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 697 flow [2024-11-28 02:52:57,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:52:57,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:57,731 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] [2024-11-28 02:52:57,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:52:57,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:52:57,931 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:57,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash -450054809, now seen corresponding path program 8 times [2024-11-28 02:52:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:57,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276716087] [2024-11-28 02:52:57,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:52:57,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:57,952 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:52:57,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276716087] [2024-11-28 02:52:58,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276716087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:58,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:58,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:52:58,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083839220] [2024-11-28 02:52:58,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:58,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:52:58,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:58,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:52:58,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:52:58,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:58,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 697 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:58,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:58,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:58,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:58,884 INFO L124 PetriNetUnfolderBase]: 515/925 cut-off events. [2024-11-28 02:52:58,884 INFO L125 PetriNetUnfolderBase]: For 4788/4788 co-relation queries the response was YES. [2024-11-28 02:52:58,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 925 events. 515/925 cut-off events. For 4788/4788 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4231 event pairs, 220 based on Foata normal form. 1/925 useless extension candidates. Maximal degree in co-relation 3966. Up to 506 conditions per place. [2024-11-28 02:52:58,893 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 69 selfloop transitions, 24 changer transitions 6/100 dead transitions. [2024-11-28 02:52:58,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 100 transitions, 1084 flow [2024-11-28 02:52:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:52:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:52:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-28 02:52:58,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-28 02:52:58,894 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 697 flow. Second operand 9 states and 94 transitions. [2024-11-28 02:52:58,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 100 transitions, 1084 flow [2024-11-28 02:52:58,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 1042 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-28 02:52:58,908 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 792 flow [2024-11-28 02:52:58,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=792, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2024-11-28 02:52:58,909 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-11-28 02:52:58,909 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 792 flow [2024-11-28 02:52:58,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:58,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:58,910 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] [2024-11-28 02:52:58,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:52:58,913 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:58,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:58,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1474425353, now seen corresponding path program 9 times [2024-11-28 02:52:58,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:58,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530438934] [2024-11-28 02:52:58,914 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:52:58,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:58,935 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:52:58,936 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:52:59,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:59,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530438934] [2024-11-28 02:52:59,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530438934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:59,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:59,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:52:59,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979308061] [2024-11-28 02:52:59,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:59,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:52:59,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:59,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:52:59,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:52:59,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:52:59,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 792 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:59,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:52:59,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:52:59,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:52:59,858 INFO L124 PetriNetUnfolderBase]: 506/903 cut-off events. [2024-11-28 02:52:59,858 INFO L125 PetriNetUnfolderBase]: For 4970/4970 co-relation queries the response was YES. [2024-11-28 02:52:59,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 903 events. 506/903 cut-off events. For 4970/4970 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4075 event pairs, 215 based on Foata normal form. 1/904 useless extension candidates. Maximal degree in co-relation 3932. Up to 506 conditions per place. [2024-11-28 02:52:59,868 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 63 selfloop transitions, 27 changer transitions 6/97 dead transitions. [2024-11-28 02:52:59,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 1106 flow [2024-11-28 02:52:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:52:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:52:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-28 02:52:59,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-28 02:52:59,869 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 792 flow. Second operand 9 states and 90 transitions. [2024-11-28 02:52:59,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 1106 flow [2024-11-28 02:52:59,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 1055 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-28 02:52:59,886 INFO L231 Difference]: Finished difference. Result has 96 places, 70 transitions, 826 flow [2024-11-28 02:52:59,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=826, PETRI_PLACES=96, PETRI_TRANSITIONS=70} [2024-11-28 02:52:59,886 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2024-11-28 02:52:59,887 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 70 transitions, 826 flow [2024-11-28 02:52:59,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 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 02:52:59,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:52:59,887 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] [2024-11-28 02:52:59,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:52:59,887 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:52:59,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash 871253972, now seen corresponding path program 1 times [2024-11-28 02:52:59,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:59,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621167093] [2024-11-28 02:52:59,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:00,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:00,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621167093] [2024-11-28 02:53:00,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621167093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:00,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227622099] [2024-11-28 02:53:00,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:00,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:00,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:00,268 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:00,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:53:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:00,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:53:00,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:00,459 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 02:53:00,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 02:53:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:00,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:00,588 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 02:53:00,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 02:53:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227622099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:00,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-28 02:53:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893157437] [2024-11-28 02:53:00,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:00,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:53:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:00,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:53:00,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:53:00,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:00,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 70 transitions, 826 flow. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 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 02:53:00,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:00,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:00,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:01,302 INFO L124 PetriNetUnfolderBase]: 593/1051 cut-off events. [2024-11-28 02:53:01,302 INFO L125 PetriNetUnfolderBase]: For 5222/5222 co-relation queries the response was YES. [2024-11-28 02:53:01,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 1051 events. 593/1051 cut-off events. For 5222/5222 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4938 event pairs, 247 based on Foata normal form. 12/1063 useless extension candidates. Maximal degree in co-relation 4581. Up to 523 conditions per place. [2024-11-28 02:53:01,313 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 81 selfloop transitions, 32 changer transitions 0/114 dead transitions. [2024-11-28 02:53:01,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 114 transitions, 1280 flow [2024-11-28 02:53:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:53:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:53:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-11-28 02:53:01,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-11-28 02:53:01,315 INFO L175 Difference]: Start difference. First operand has 96 places, 70 transitions, 826 flow. Second operand 10 states and 108 transitions. [2024-11-28 02:53:01,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 114 transitions, 1280 flow [2024-11-28 02:53:01,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 114 transitions, 1212 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:01,335 INFO L231 Difference]: Finished difference. Result has 99 places, 73 transitions, 873 flow [2024-11-28 02:53:01,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=873, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2024-11-28 02:53:01,336 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 73 predicate places. [2024-11-28 02:53:01,336 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 873 flow [2024-11-28 02:53:01,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 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 02:53:01,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:01,337 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] [2024-11-28 02:53:01,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:53:01,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:53:01,538 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:01,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash 455128078, now seen corresponding path program 2 times [2024-11-28 02:53:01,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:01,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206598768] [2024-11-28 02:53:01,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:01,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:01,579 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:01,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:01,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206598768] [2024-11-28 02:53:01,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206598768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:01,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:01,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:01,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962124038] [2024-11-28 02:53:01,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:01,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:01,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:01,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:01,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:01,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 73 transitions, 873 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:01,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:01,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:01,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:02,406 INFO L124 PetriNetUnfolderBase]: 588/1046 cut-off events. [2024-11-28 02:53:02,406 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-11-28 02:53:02,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4680 conditions, 1046 events. 588/1046 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5058 event pairs, 208 based on Foata normal form. 5/1051 useless extension candidates. Maximal degree in co-relation 4625. Up to 523 conditions per place. [2024-11-28 02:53:02,423 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 73 selfloop transitions, 30 changer transitions 10/114 dead transitions. [2024-11-28 02:53:02,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 1278 flow [2024-11-28 02:53:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:02,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-28 02:53:02,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-28 02:53:02,425 INFO L175 Difference]: Start difference. First operand has 99 places, 73 transitions, 873 flow. Second operand 9 states and 93 transitions. [2024-11-28 02:53:02,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 1278 flow [2024-11-28 02:53:02,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 114 transitions, 1200 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:02,450 INFO L231 Difference]: Finished difference. Result has 101 places, 71 transitions, 825 flow [2024-11-28 02:53:02,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=825, PETRI_PLACES=101, PETRI_TRANSITIONS=71} [2024-11-28 02:53:02,451 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2024-11-28 02:53:02,451 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 71 transitions, 825 flow [2024-11-28 02:53:02,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:02,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:02,451 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] [2024-11-28 02:53:02,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:53:02,452 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:02,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash -859076454, now seen corresponding path program 1 times [2024-11-28 02:53:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:02,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231500824] [2024-11-28 02:53:02,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:02,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:02,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231500824] [2024-11-28 02:53:02,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231500824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:02,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301705407] [2024-11-28 02:53:02,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:02,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:02,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:02,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:02,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:53:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:02,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:53:02,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:03,024 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 02:53:03,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 02:53:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:03,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:03,166 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 02:53:03,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-28 02:53:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:03,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301705407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:03,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-28 02:53:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128822780] [2024-11-28 02:53:03,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:03,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:53:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:03,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:53:03,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:53:03,191 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:03,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 71 transitions, 825 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:03,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:03,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:03,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:03,874 INFO L124 PetriNetUnfolderBase]: 618/1094 cut-off events. [2024-11-28 02:53:03,874 INFO L125 PetriNetUnfolderBase]: For 5355/5355 co-relation queries the response was YES. [2024-11-28 02:53:03,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 1094 events. 618/1094 cut-off events. For 5355/5355 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5257 event pairs, 154 based on Foata normal form. 14/1108 useless extension candidates. Maximal degree in co-relation 4811. Up to 486 conditions per place. [2024-11-28 02:53:03,886 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 88 selfloop transitions, 34 changer transitions 0/123 dead transitions. [2024-11-28 02:53:03,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 123 transitions, 1336 flow [2024-11-28 02:53:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:53:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:53:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-11-28 02:53:03,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-11-28 02:53:03,888 INFO L175 Difference]: Start difference. First operand has 101 places, 71 transitions, 825 flow. Second operand 10 states and 106 transitions. [2024-11-28 02:53:03,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 123 transitions, 1336 flow [2024-11-28 02:53:03,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 123 transitions, 1266 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:03,910 INFO L231 Difference]: Finished difference. Result has 102 places, 73 transitions, 856 flow [2024-11-28 02:53:03,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=856, PETRI_PLACES=102, PETRI_TRANSITIONS=73} [2024-11-28 02:53:03,911 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 76 predicate places. [2024-11-28 02:53:03,911 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 73 transitions, 856 flow [2024-11-28 02:53:03,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:03,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:03,913 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] [2024-11-28 02:53:03,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:53:04,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:53:04,118 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:04,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash -433382104, now seen corresponding path program 3 times [2024-11-28 02:53:04,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:04,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901317884] [2024-11-28 02:53:04,119 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:04,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:04,133 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:53:04,133 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901317884] [2024-11-28 02:53:04,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901317884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:04,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:04,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:04,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919588380] [2024-11-28 02:53:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:04,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:04,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:04,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:04,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:04,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 73 transitions, 856 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:04,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:04,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:04,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:04,888 INFO L124 PetriNetUnfolderBase]: 643/1133 cut-off events. [2024-11-28 02:53:04,888 INFO L125 PetriNetUnfolderBase]: For 6484/6484 co-relation queries the response was YES. [2024-11-28 02:53:04,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5272 conditions, 1133 events. 643/1133 cut-off events. For 6484/6484 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5424 event pairs, 306 based on Foata normal form. 12/1145 useless extension candidates. Maximal degree in co-relation 5216. Up to 605 conditions per place. [2024-11-28 02:53:04,900 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 74 selfloop transitions, 34 changer transitions 0/109 dead transitions. [2024-11-28 02:53:04,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 1315 flow [2024-11-28 02:53:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-28 02:53:04,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-28 02:53:04,902 INFO L175 Difference]: Start difference. First operand has 102 places, 73 transitions, 856 flow. Second operand 9 states and 96 transitions. [2024-11-28 02:53:04,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 1315 flow [2024-11-28 02:53:04,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 1219 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-28 02:53:04,928 INFO L231 Difference]: Finished difference. Result has 105 places, 79 transitions, 955 flow [2024-11-28 02:53:04,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=955, PETRI_PLACES=105, PETRI_TRANSITIONS=79} [2024-11-28 02:53:04,929 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 79 predicate places. [2024-11-28 02:53:04,929 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 79 transitions, 955 flow [2024-11-28 02:53:04,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:04,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:04,931 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] [2024-11-28 02:53:04,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 02:53:04,931 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:04,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash -460925370, now seen corresponding path program 4 times [2024-11-28 02:53:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:04,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848043113] [2024-11-28 02:53:04,932 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:04,953 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:04,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:05,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:05,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848043113] [2024-11-28 02:53:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848043113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323844369] [2024-11-28 02:53:05,127 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:05,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:05,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:05,129 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:05,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:53:05,236 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:05,236 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:05,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:53:05,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:05,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:53:05,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 02:53:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:05,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:05,578 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 02:53:05,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-28 02:53:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:05,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323844369] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:05,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:53:05,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 9] total 18 [2024-11-28 02:53:05,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513797261] [2024-11-28 02:53:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:05,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:53:05,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:05,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:53:05,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:53:05,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:05,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 79 transitions, 955 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:05,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:05,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:05,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:06,085 INFO L124 PetriNetUnfolderBase]: 691/1229 cut-off events. [2024-11-28 02:53:06,085 INFO L125 PetriNetUnfolderBase]: For 5587/5587 co-relation queries the response was YES. [2024-11-28 02:53:06,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5591 conditions, 1229 events. 691/1229 cut-off events. For 5587/5587 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6150 event pairs, 262 based on Foata normal form. 12/1241 useless extension candidates. Maximal degree in co-relation 5535. Up to 624 conditions per place. [2024-11-28 02:53:06,098 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 91 selfloop transitions, 33 changer transitions 0/125 dead transitions. [2024-11-28 02:53:06,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 125 transitions, 1454 flow [2024-11-28 02:53:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-11-28 02:53:06,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-28 02:53:06,099 INFO L175 Difference]: Start difference. First operand has 105 places, 79 transitions, 955 flow. Second operand 7 states and 96 transitions. [2024-11-28 02:53:06,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 125 transitions, 1454 flow [2024-11-28 02:53:06,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 125 transitions, 1372 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-28 02:53:06,166 INFO L231 Difference]: Finished difference. Result has 108 places, 82 transitions, 1006 flow [2024-11-28 02:53:06,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1006, PETRI_PLACES=108, PETRI_TRANSITIONS=82} [2024-11-28 02:53:06,167 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 82 predicate places. [2024-11-28 02:53:06,167 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 82 transitions, 1006 flow [2024-11-28 02:53:06,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:06,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:06,168 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] [2024-11-28 02:53:06,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:53:06,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:06,370 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:06,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash 805424118, now seen corresponding path program 5 times [2024-11-28 02:53:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:06,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431248070] [2024-11-28 02:53:06,371 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:06,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:06,400 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:06,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:53:06,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431248070] [2024-11-28 02:53:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431248070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106652164] [2024-11-28 02:53:06,751 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:06,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:06,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:06,754 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:06,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:53:06,857 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:06,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:06,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 02:53:06,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:07,203 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 02:53:07,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-28 02:53:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:07,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:07,443 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-28 02:53:07,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2024-11-28 02:53:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:07,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106652164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:07,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:07,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2024-11-28 02:53:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735219031] [2024-11-28 02:53:07,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:07,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:53:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:07,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:53:07,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:53:07,809 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:07,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 82 transitions, 1006 flow. Second operand has 27 states, 27 states have (on average 5.111111111111111) internal successors, (138), 27 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:53:07,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:07,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:07,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:10,885 INFO L124 PetriNetUnfolderBase]: 2091/3769 cut-off events. [2024-11-28 02:53:10,886 INFO L125 PetriNetUnfolderBase]: For 18345/18345 co-relation queries the response was YES. [2024-11-28 02:53:10,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16861 conditions, 3769 events. 2091/3769 cut-off events. For 18345/18345 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 24195 event pairs, 584 based on Foata normal form. 54/3819 useless extension candidates. Maximal degree in co-relation 16169. Up to 659 conditions per place. [2024-11-28 02:53:10,923 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 262 selfloop transitions, 152 changer transitions 0/415 dead transitions. [2024-11-28 02:53:10,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 415 transitions, 4755 flow [2024-11-28 02:53:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 02:53:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-28 02:53:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 430 transitions. [2024-11-28 02:53:10,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37456445993031356 [2024-11-28 02:53:10,927 INFO L175 Difference]: Start difference. First operand has 108 places, 82 transitions, 1006 flow. Second operand 41 states and 430 transitions. [2024-11-28 02:53:10,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 415 transitions, 4755 flow [2024-11-28 02:53:10,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 415 transitions, 4630 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-28 02:53:11,003 INFO L231 Difference]: Finished difference. Result has 166 places, 199 transitions, 3161 flow [2024-11-28 02:53:11,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3161, PETRI_PLACES=166, PETRI_TRANSITIONS=199} [2024-11-28 02:53:11,004 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 140 predicate places. [2024-11-28 02:53:11,004 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 199 transitions, 3161 flow [2024-11-28 02:53:11,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.111111111111111) internal successors, (138), 27 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:53:11,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:11,006 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] [2024-11-28 02:53:11,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:53:11,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:11,206 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:11,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:11,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1083130014, now seen corresponding path program 2 times [2024-11-28 02:53:11,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:11,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802202934] [2024-11-28 02:53:11,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:11,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:11,222 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:53:11,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:11,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:11,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802202934] [2024-11-28 02:53:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802202934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:11,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:11,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:11,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803600971] [2024-11-28 02:53:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:11,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:11,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:11,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:11,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:11,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 199 transitions, 3161 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:11,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:11,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:11,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:12,570 INFO L124 PetriNetUnfolderBase]: 2391/4297 cut-off events. [2024-11-28 02:53:12,571 INFO L125 PetriNetUnfolderBase]: For 27778/27778 co-relation queries the response was YES. [2024-11-28 02:53:12,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21553 conditions, 4297 events. 2391/4297 cut-off events. For 27778/27778 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 28472 event pairs, 948 based on Foata normal form. 42/4337 useless extension candidates. Maximal degree in co-relation 20837. Up to 1960 conditions per place. [2024-11-28 02:53:12,603 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 137 selfloop transitions, 111 changer transitions 0/249 dead transitions. [2024-11-28 02:53:12,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 249 transitions, 3967 flow [2024-11-28 02:53:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-11-28 02:53:12,605 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-28 02:53:12,605 INFO L175 Difference]: Start difference. First operand has 166 places, 199 transitions, 3161 flow. Second operand 9 states and 105 transitions. [2024-11-28 02:53:12,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 249 transitions, 3967 flow [2024-11-28 02:53:12,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 249 transitions, 3768 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-11-28 02:53:12,750 INFO L231 Difference]: Finished difference. Result has 173 places, 202 transitions, 3239 flow [2024-11-28 02:53:12,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3239, PETRI_PLACES=173, PETRI_TRANSITIONS=202} [2024-11-28 02:53:12,751 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 147 predicate places. [2024-11-28 02:53:12,751 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 202 transitions, 3239 flow [2024-11-28 02:53:12,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:12,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:12,751 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] [2024-11-28 02:53:12,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:53:12,751 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:12,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1367429076, now seen corresponding path program 6 times [2024-11-28 02:53:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527527987] [2024-11-28 02:53:12,752 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:53:12,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:12,765 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:53:12,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:13,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:13,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527527987] [2024-11-28 02:53:13,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527527987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:13,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:13,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443191731] [2024-11-28 02:53:13,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:13,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:13,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:13,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:13,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:13,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 202 transitions, 3239 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:13,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:13,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:13,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:14,195 INFO L124 PetriNetUnfolderBase]: 2391/4312 cut-off events. [2024-11-28 02:53:14,195 INFO L125 PetriNetUnfolderBase]: For 30682/30682 co-relation queries the response was YES. [2024-11-28 02:53:14,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22225 conditions, 4312 events. 2391/4312 cut-off events. For 30682/30682 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 28580 event pairs, 1091 based on Foata normal form. 15/4327 useless extension candidates. Maximal degree in co-relation 21577. Up to 2422 conditions per place. [2024-11-28 02:53:14,236 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 119 selfloop transitions, 112 changer transitions 4/236 dead transitions. [2024-11-28 02:53:14,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 236 transitions, 3933 flow [2024-11-28 02:53:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-28 02:53:14,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-28 02:53:14,237 INFO L175 Difference]: Start difference. First operand has 173 places, 202 transitions, 3239 flow. Second operand 9 states and 90 transitions. [2024-11-28 02:53:14,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 236 transitions, 3933 flow [2024-11-28 02:53:14,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 236 transitions, 3778 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-28 02:53:14,556 INFO L231 Difference]: Finished difference. Result has 178 places, 204 transitions, 3360 flow [2024-11-28 02:53:14,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3360, PETRI_PLACES=178, PETRI_TRANSITIONS=204} [2024-11-28 02:53:14,560 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 152 predicate places. [2024-11-28 02:53:14,561 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 204 transitions, 3360 flow [2024-11-28 02:53:14,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:14,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:14,561 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] [2024-11-28 02:53:14,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 02:53:14,561 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:14,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1555860638, now seen corresponding path program 3 times [2024-11-28 02:53:14,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:14,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238825730] [2024-11-28 02:53:14,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:14,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:14,583 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:53:14,584 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:14,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:14,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238825730] [2024-11-28 02:53:14,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238825730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:14,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:14,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990478630] [2024-11-28 02:53:14,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:14,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:14,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:14,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:14,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:14,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:14,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 204 transitions, 3360 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:14,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:14,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:14,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:15,795 INFO L124 PetriNetUnfolderBase]: 2343/4249 cut-off events. [2024-11-28 02:53:15,795 INFO L125 PetriNetUnfolderBase]: For 29631/29631 co-relation queries the response was YES. [2024-11-28 02:53:15,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21909 conditions, 4249 events. 2343/4249 cut-off events. For 29631/29631 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 28268 event pairs, 1037 based on Foata normal form. 42/4291 useless extension candidates. Maximal degree in co-relation 21235. Up to 2314 conditions per place. [2024-11-28 02:53:15,836 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 125 selfloop transitions, 113 changer transitions 0/239 dead transitions. [2024-11-28 02:53:15,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 239 transitions, 4038 flow [2024-11-28 02:53:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-28 02:53:15,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-28 02:53:15,837 INFO L175 Difference]: Start difference. First operand has 178 places, 204 transitions, 3360 flow. Second operand 9 states and 94 transitions. [2024-11-28 02:53:15,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 239 transitions, 4038 flow [2024-11-28 02:53:16,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 239 transitions, 3792 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:16,022 INFO L231 Difference]: Finished difference. Result has 179 places, 204 transitions, 3346 flow [2024-11-28 02:53:16,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3346, PETRI_PLACES=179, PETRI_TRANSITIONS=204} [2024-11-28 02:53:16,025 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 153 predicate places. [2024-11-28 02:53:16,025 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 204 transitions, 3346 flow [2024-11-28 02:53:16,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:16,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:16,026 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] [2024-11-28 02:53:16,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 02:53:16,026 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:16,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:16,027 INFO L85 PathProgramCache]: Analyzing trace with hash 900277646, now seen corresponding path program 7 times [2024-11-28 02:53:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:16,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609663016] [2024-11-28 02:53:16,027 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:53:16,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:16,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:16,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609663016] [2024-11-28 02:53:16,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609663016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:16,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:16,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:16,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958569720] [2024-11-28 02:53:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:16,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:16,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:16,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:16,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:16,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 204 transitions, 3346 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:16,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:16,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:16,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:17,173 INFO L124 PetriNetUnfolderBase]: 2248/4059 cut-off events. [2024-11-28 02:53:17,174 INFO L125 PetriNetUnfolderBase]: For 27807/27807 co-relation queries the response was YES. [2024-11-28 02:53:17,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21099 conditions, 4059 events. 2248/4059 cut-off events. For 27807/27807 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26644 event pairs, 998 based on Foata normal form. 15/4074 useless extension candidates. Maximal degree in co-relation 20365. Up to 2380 conditions per place. [2024-11-28 02:53:17,198 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 117 selfloop transitions, 107 changer transitions 9/234 dead transitions. [2024-11-28 02:53:17,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 234 transitions, 3916 flow [2024-11-28 02:53:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-11-28 02:53:17,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-11-28 02:53:17,199 INFO L175 Difference]: Start difference. First operand has 179 places, 204 transitions, 3346 flow. Second operand 9 states and 91 transitions. [2024-11-28 02:53:17,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 234 transitions, 3916 flow [2024-11-28 02:53:17,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 234 transitions, 3682 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 02:53:17,318 INFO L231 Difference]: Finished difference. Result has 179 places, 198 transitions, 3202 flow [2024-11-28 02:53:17,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3033, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3202, PETRI_PLACES=179, PETRI_TRANSITIONS=198} [2024-11-28 02:53:17,319 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 153 predicate places. [2024-11-28 02:53:17,319 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 198 transitions, 3202 flow [2024-11-28 02:53:17,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:17,319 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:17,319 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] [2024-11-28 02:53:17,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 02:53:17,320 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:17,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash 474507998, now seen corresponding path program 4 times [2024-11-28 02:53:17,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:17,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303146732] [2024-11-28 02:53:17,321 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:17,333 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:17,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:17,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303146732] [2024-11-28 02:53:17,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303146732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:17,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:17,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:53:17,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971535288] [2024-11-28 02:53:17,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:17,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:53:17,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:17,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:53:17,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:53:17,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:17,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 198 transitions, 3202 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:17,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:17,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:17,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:18,241 INFO L124 PetriNetUnfolderBase]: 2137/3816 cut-off events. [2024-11-28 02:53:18,241 INFO L125 PetriNetUnfolderBase]: For 26994/26994 co-relation queries the response was YES. [2024-11-28 02:53:18,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20150 conditions, 3816 events. 2137/3816 cut-off events. For 26994/26994 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24389 event pairs, 926 based on Foata normal form. 12/3828 useless extension candidates. Maximal degree in co-relation 19416. Up to 2207 conditions per place. [2024-11-28 02:53:18,275 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 117 selfloop transitions, 102 changer transitions 4/224 dead transitions. [2024-11-28 02:53:18,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 224 transitions, 3752 flow [2024-11-28 02:53:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-28 02:53:18,276 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-28 02:53:18,276 INFO L175 Difference]: Start difference. First operand has 179 places, 198 transitions, 3202 flow. Second operand 7 states and 80 transitions. [2024-11-28 02:53:18,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 224 transitions, 3752 flow [2024-11-28 02:53:18,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 224 transitions, 3506 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-11-28 02:53:18,397 INFO L231 Difference]: Finished difference. Result has 173 places, 193 transitions, 3054 flow [2024-11-28 02:53:18,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3054, PETRI_PLACES=173, PETRI_TRANSITIONS=193} [2024-11-28 02:53:18,398 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 147 predicate places. [2024-11-28 02:53:18,398 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 193 transitions, 3054 flow [2024-11-28 02:53:18,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:18,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:18,398 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] [2024-11-28 02:53:18,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 02:53:18,398 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:18,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1940513444, now seen corresponding path program 8 times [2024-11-28 02:53:18,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:18,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835073178] [2024-11-28 02:53:18,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:18,417 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:53:18,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835073178] [2024-11-28 02:53:18,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835073178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:18,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:18,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:18,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914687062] [2024-11-28 02:53:18,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:18,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:18,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:18,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:18,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:18,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:18,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 193 transitions, 3054 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:18,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:18,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:18,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:19,598 INFO L124 PetriNetUnfolderBase]: 2131/3813 cut-off events. [2024-11-28 02:53:19,598 INFO L125 PetriNetUnfolderBase]: For 27763/27763 co-relation queries the response was YES. [2024-11-28 02:53:19,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20042 conditions, 3813 events. 2131/3813 cut-off events. For 27763/27763 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24362 event pairs, 946 based on Foata normal form. 15/3828 useless extension candidates. Maximal degree in co-relation 19273. Up to 2194 conditions per place. [2024-11-28 02:53:19,631 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 100 selfloop transitions, 109 changer transitions 9/219 dead transitions. [2024-11-28 02:53:19,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 219 transitions, 3619 flow [2024-11-28 02:53:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-28 02:53:19,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-28 02:53:19,633 INFO L175 Difference]: Start difference. First operand has 173 places, 193 transitions, 3054 flow. Second operand 9 states and 90 transitions. [2024-11-28 02:53:19,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 219 transitions, 3619 flow [2024-11-28 02:53:19,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 219 transitions, 3404 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 02:53:19,751 INFO L231 Difference]: Finished difference. Result has 175 places, 190 transitions, 3022 flow [2024-11-28 02:53:19,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3022, PETRI_PLACES=175, PETRI_TRANSITIONS=190} [2024-11-28 02:53:19,752 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2024-11-28 02:53:19,752 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 190 transitions, 3022 flow [2024-11-28 02:53:19,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:19,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:19,752 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] [2024-11-28 02:53:19,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 02:53:19,752 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:19,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1150765234, now seen corresponding path program 9 times [2024-11-28 02:53:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:19,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421618742] [2024-11-28 02:53:19,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:19,770 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:53:19,770 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:20,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421618742] [2024-11-28 02:53:20,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421618742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:20,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:20,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:20,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548434165] [2024-11-28 02:53:20,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:20,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:20,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:20,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:20,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:20,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 190 transitions, 3022 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:20,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:20,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:20,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:20,825 INFO L124 PetriNetUnfolderBase]: 2050/3661 cut-off events. [2024-11-28 02:53:20,826 INFO L125 PetriNetUnfolderBase]: For 27740/27740 co-relation queries the response was YES. [2024-11-28 02:53:20,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19229 conditions, 3661 events. 2050/3661 cut-off events. For 27740/27740 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 23177 event pairs, 949 based on Foata normal form. 15/3676 useless extension candidates. Maximal degree in co-relation 18527. Up to 2194 conditions per place. [2024-11-28 02:53:20,871 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 92 selfloop transitions, 110 changer transitions 6/209 dead transitions. [2024-11-28 02:53:20,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 209 transitions, 3475 flow [2024-11-28 02:53:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-11-28 02:53:20,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-28 02:53:20,872 INFO L175 Difference]: Start difference. First operand has 175 places, 190 transitions, 3022 flow. Second operand 9 states and 92 transitions. [2024-11-28 02:53:20,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 209 transitions, 3475 flow [2024-11-28 02:53:21,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 209 transitions, 3206 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-11-28 02:53:21,014 INFO L231 Difference]: Finished difference. Result has 169 places, 183 transitions, 2875 flow [2024-11-28 02:53:21,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2875, PETRI_PLACES=169, PETRI_TRANSITIONS=183} [2024-11-28 02:53:21,015 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2024-11-28 02:53:21,015 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 183 transitions, 2875 flow [2024-11-28 02:53:21,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:21,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:21,016 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] [2024-11-28 02:53:21,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 02:53:21,016 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:21,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash 81003908, now seen corresponding path program 5 times [2024-11-28 02:53:21,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:21,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203007811] [2024-11-28 02:53:21,017 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:21,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:21,039 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:21,040 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:53:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203007811] [2024-11-28 02:53:21,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203007811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185131490] [2024-11-28 02:53:21,359 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:21,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:21,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:21,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:53:21,488 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:21,488 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:21,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 02:53:21,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:21,785 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 02:53:21,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-28 02:53:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:21,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:22,021 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-28 02:53:22,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2024-11-28 02:53:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:22,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185131490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:22,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:22,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2024-11-28 02:53:22,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111750859] [2024-11-28 02:53:22,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:22,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:53:22,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:22,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:53:22,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:53:22,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:22,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 183 transitions, 2875 flow. Second operand has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:22,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:22,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:22,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:24,369 INFO L124 PetriNetUnfolderBase]: 2365/4204 cut-off events. [2024-11-28 02:53:24,370 INFO L125 PetriNetUnfolderBase]: For 31117/31117 co-relation queries the response was YES. [2024-11-28 02:53:24,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21376 conditions, 4204 events. 2365/4204 cut-off events. For 31117/31117 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 27271 event pairs, 610 based on Foata normal form. 45/4249 useless extension candidates. Maximal degree in co-relation 20635. Up to 735 conditions per place. [2024-11-28 02:53:24,401 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 305 selfloop transitions, 143 changer transitions 4/453 dead transitions. [2024-11-28 02:53:24,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 453 transitions, 5697 flow [2024-11-28 02:53:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 02:53:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-28 02:53:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 414 transitions. [2024-11-28 02:53:24,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-28 02:53:24,403 INFO L175 Difference]: Start difference. First operand has 169 places, 183 transitions, 2875 flow. Second operand 36 states and 414 transitions. [2024-11-28 02:53:24,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 453 transitions, 5697 flow [2024-11-28 02:53:24,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 453 transitions, 5468 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:24,506 INFO L231 Difference]: Finished difference. Result has 206 places, 212 transitions, 3502 flow [2024-11-28 02:53:24,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3502, PETRI_PLACES=206, PETRI_TRANSITIONS=212} [2024-11-28 02:53:24,507 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 180 predicate places. [2024-11-28 02:53:24,507 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 212 transitions, 3502 flow [2024-11-28 02:53:24,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:24,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:24,507 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] [2024-11-28 02:53:24,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:53:24,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 02:53:24,712 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:24,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 364186392, now seen corresponding path program 10 times [2024-11-28 02:53:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:24,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917971227] [2024-11-28 02:53:24,712 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:24,728 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:24,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:24,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:24,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917971227] [2024-11-28 02:53:24,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917971227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:24,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:24,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:53:24,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359611547] [2024-11-28 02:53:24,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:24,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:53:24,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:24,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:53:24,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:53:24,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:24,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 212 transitions, 3502 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:24,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:24,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:24,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:25,658 INFO L124 PetriNetUnfolderBase]: 2270/4014 cut-off events. [2024-11-28 02:53:25,658 INFO L125 PetriNetUnfolderBase]: For 41237/41237 co-relation queries the response was YES. [2024-11-28 02:53:25,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22571 conditions, 4014 events. 2270/4014 cut-off events. For 41237/41237 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 25607 event pairs, 1153 based on Foata normal form. 15/4029 useless extension candidates. Maximal degree in co-relation 22054. Up to 2767 conditions per place. [2024-11-28 02:53:25,694 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 116 selfloop transitions, 106 changer transitions 6/229 dead transitions. [2024-11-28 02:53:25,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 229 transitions, 3994 flow [2024-11-28 02:53:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-28 02:53:25,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-28 02:53:25,695 INFO L175 Difference]: Start difference. First operand has 206 places, 212 transitions, 3502 flow. Second operand 7 states and 80 transitions. [2024-11-28 02:53:25,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 229 transitions, 3994 flow [2024-11-28 02:53:25,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 229 transitions, 3700 flow, removed 65 selfloop flow, removed 19 redundant places. [2024-11-28 02:53:25,869 INFO L231 Difference]: Finished difference. Result has 193 places, 206 transitions, 3302 flow [2024-11-28 02:53:25,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3302, PETRI_PLACES=193, PETRI_TRANSITIONS=206} [2024-11-28 02:53:25,870 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 167 predicate places. [2024-11-28 02:53:25,870 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 206 transitions, 3302 flow [2024-11-28 02:53:25,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:25,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:25,870 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] [2024-11-28 02:53:25,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 02:53:25,870 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:25,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:25,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1637920632, now seen corresponding path program 6 times [2024-11-28 02:53:25,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:25,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829246954] [2024-11-28 02:53:25,871 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:53:25,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:25,884 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:53:25,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:26,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:26,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829246954] [2024-11-28 02:53:26,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829246954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:26,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:26,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:26,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210052180] [2024-11-28 02:53:26,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:26,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:26,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:26,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:26,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:26,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:26,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 206 transitions, 3302 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:26,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:26,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:26,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:26,913 INFO L124 PetriNetUnfolderBase]: 2264/4005 cut-off events. [2024-11-28 02:53:26,913 INFO L125 PetriNetUnfolderBase]: For 38567/38567 co-relation queries the response was YES. [2024-11-28 02:53:26,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22047 conditions, 4005 events. 2264/4005 cut-off events. For 38567/38567 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 25519 event pairs, 1147 based on Foata normal form. 12/4017 useless extension candidates. Maximal degree in co-relation 21746. Up to 2754 conditions per place. [2024-11-28 02:53:26,951 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 117 selfloop transitions, 103 changer transitions 5/226 dead transitions. [2024-11-28 02:53:26,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 226 transitions, 3853 flow [2024-11-28 02:53:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-28 02:53:26,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-28 02:53:26,952 INFO L175 Difference]: Start difference. First operand has 193 places, 206 transitions, 3302 flow. Second operand 9 states and 87 transitions. [2024-11-28 02:53:26,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 226 transitions, 3853 flow [2024-11-28 02:53:27,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 226 transitions, 3601 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-28 02:53:27,147 INFO L231 Difference]: Finished difference. Result has 190 places, 203 transitions, 3213 flow [2024-11-28 02:53:27,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3213, PETRI_PLACES=190, PETRI_TRANSITIONS=203} [2024-11-28 02:53:27,148 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 164 predicate places. [2024-11-28 02:53:27,148 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 203 transitions, 3213 flow [2024-11-28 02:53:27,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:27,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:27,148 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] [2024-11-28 02:53:27,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 02:53:27,149 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:27,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:27,149 INFO L85 PathProgramCache]: Analyzing trace with hash -190689554, now seen corresponding path program 7 times [2024-11-28 02:53:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280111414] [2024-11-28 02:53:27,150 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:53:27,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280111414] [2024-11-28 02:53:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280111414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:27,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:27,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:27,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359320617] [2024-11-28 02:53:27,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:27,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:27,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:27,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:27,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:27,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 203 transitions, 3213 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:27,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:27,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:27,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:28,224 INFO L124 PetriNetUnfolderBase]: 2246/3975 cut-off events. [2024-11-28 02:53:28,224 INFO L125 PetriNetUnfolderBase]: For 38340/38340 co-relation queries the response was YES. [2024-11-28 02:53:28,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21809 conditions, 3975 events. 2246/3975 cut-off events. For 38340/38340 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25308 event pairs, 1146 based on Foata normal form. 12/3987 useless extension candidates. Maximal degree in co-relation 21131. Up to 2742 conditions per place. [2024-11-28 02:53:28,254 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 112 selfloop transitions, 98 changer transitions 8/219 dead transitions. [2024-11-28 02:53:28,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 219 transitions, 3695 flow [2024-11-28 02:53:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-28 02:53:28,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32936507936507936 [2024-11-28 02:53:28,255 INFO L175 Difference]: Start difference. First operand has 190 places, 203 transitions, 3213 flow. Second operand 9 states and 83 transitions. [2024-11-28 02:53:28,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 219 transitions, 3695 flow [2024-11-28 02:53:28,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 219 transitions, 3495 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:28,383 INFO L231 Difference]: Finished difference. Result has 190 places, 194 transitions, 3073 flow [2024-11-28 02:53:28,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3073, PETRI_PLACES=190, PETRI_TRANSITIONS=194} [2024-11-28 02:53:28,383 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 164 predicate places. [2024-11-28 02:53:28,383 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 194 transitions, 3073 flow [2024-11-28 02:53:28,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:28,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:28,384 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] [2024-11-28 02:53:28,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-28 02:53:28,384 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:28,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1328349244, now seen corresponding path program 8 times [2024-11-28 02:53:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413547188] [2024-11-28 02:53:28,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:28,400 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:53:28,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413547188] [2024-11-28 02:53:28,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413547188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:28,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:28,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081166112] [2024-11-28 02:53:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:28,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:28,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:28,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:28,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:28,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 194 transitions, 3073 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:28,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:28,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:28,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:29,433 INFO L124 PetriNetUnfolderBase]: 2195/3879 cut-off events. [2024-11-28 02:53:29,433 INFO L125 PetriNetUnfolderBase]: For 38020/38020 co-relation queries the response was YES. [2024-11-28 02:53:29,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21344 conditions, 3879 events. 2195/3879 cut-off events. For 38020/38020 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24469 event pairs, 1131 based on Foata normal form. 12/3891 useless extension candidates. Maximal degree in co-relation 20666. Up to 2689 conditions per place. [2024-11-28 02:53:29,467 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 107 selfloop transitions, 96 changer transitions 4/208 dead transitions. [2024-11-28 02:53:29,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 208 transitions, 3520 flow [2024-11-28 02:53:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-11-28 02:53:29,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3253968253968254 [2024-11-28 02:53:29,468 INFO L175 Difference]: Start difference. First operand has 190 places, 194 transitions, 3073 flow. Second operand 9 states and 82 transitions. [2024-11-28 02:53:29,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 208 transitions, 3520 flow [2024-11-28 02:53:29,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 208 transitions, 3314 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-11-28 02:53:29,593 INFO L231 Difference]: Finished difference. Result has 185 places, 188 transitions, 2970 flow [2024-11-28 02:53:29,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2970, PETRI_PLACES=185, PETRI_TRANSITIONS=188} [2024-11-28 02:53:29,593 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 159 predicate places. [2024-11-28 02:53:29,594 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 188 transitions, 2970 flow [2024-11-28 02:53:29,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:29,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:29,594 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] [2024-11-28 02:53:29,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 02:53:29,594 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:29,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash 17232708, now seen corresponding path program 11 times [2024-11-28 02:53:29,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:29,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149401000] [2024-11-28 02:53:29,595 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:29,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:29,611 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:29,611 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:53:30,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:30,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149401000] [2024-11-28 02:53:30,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149401000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:30,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532279943] [2024-11-28 02:53:30,009 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:30,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:30,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:30,013 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:30,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:53:30,122 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:30,123 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:30,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:53:30,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:30,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:53:30,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532279943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:30,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:53:30,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2024-11-28 02:53:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931840695] [2024-11-28 02:53:30,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:30,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:30,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:30,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:30,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:53:30,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:30,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 2970 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:30,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:30,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:30,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:31,095 INFO L124 PetriNetUnfolderBase]: 2528/4443 cut-off events. [2024-11-28 02:53:31,095 INFO L125 PetriNetUnfolderBase]: For 46684/46684 co-relation queries the response was YES. [2024-11-28 02:53:31,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24811 conditions, 4443 events. 2528/4443 cut-off events. For 46684/46684 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 28916 event pairs, 920 based on Foata normal form. 36/4479 useless extension candidates. Maximal degree in co-relation 23998. Up to 2260 conditions per place. [2024-11-28 02:53:31,134 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 177 selfloop transitions, 89 changer transitions 0/267 dead transitions. [2024-11-28 02:53:31,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 267 transitions, 4499 flow [2024-11-28 02:53:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-11-28 02:53:31,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-28 02:53:31,135 INFO L175 Difference]: Start difference. First operand has 185 places, 188 transitions, 2970 flow. Second operand 9 states and 102 transitions. [2024-11-28 02:53:31,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 267 transitions, 4499 flow [2024-11-28 02:53:31,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 267 transitions, 4263 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 02:53:31,322 INFO L231 Difference]: Finished difference. Result has 185 places, 212 transitions, 3505 flow [2024-11-28 02:53:31,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3505, PETRI_PLACES=185, PETRI_TRANSITIONS=212} [2024-11-28 02:53:31,323 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 159 predicate places. [2024-11-28 02:53:31,323 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 212 transitions, 3505 flow [2024-11-28 02:53:31,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:31,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:31,323 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] [2024-11-28 02:53:31,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:53:31,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:31,523 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:31,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 356321940, now seen corresponding path program 12 times [2024-11-28 02:53:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:31,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420950875] [2024-11-28 02:53:31,524 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:53:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:31,540 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:53:31,540 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:31,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420950875] [2024-11-28 02:53:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420950875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114554198] [2024-11-28 02:53:31,816 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:53:31,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:31,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:31,818 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:31,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:53:31,932 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:53:31,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:31,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:53:31,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:32,004 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 02:53:32,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 02:53:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:32,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:32,103 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 02:53:32,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 02:53:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:32,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114554198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:32,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:32,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-11-28 02:53:32,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638234289] [2024-11-28 02:53:32,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:32,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:53:32,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:32,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:53:32,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:53:32,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:32,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 212 transitions, 3505 flow. Second operand has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:32,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:32,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:32,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:33,131 INFO L124 PetriNetUnfolderBase]: 2816/4947 cut-off events. [2024-11-28 02:53:33,131 INFO L125 PetriNetUnfolderBase]: For 60993/60993 co-relation queries the response was YES. [2024-11-28 02:53:33,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29180 conditions, 4947 events. 2816/4947 cut-off events. For 60993/60993 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32872 event pairs, 1260 based on Foata normal form. 36/4983 useless extension candidates. Maximal degree in co-relation 28326. Up to 2758 conditions per place. [2024-11-28 02:53:33,176 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 179 selfloop transitions, 91 changer transitions 0/271 dead transitions. [2024-11-28 02:53:33,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 271 transitions, 4732 flow [2024-11-28 02:53:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:53:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:53:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-11-28 02:53:33,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-11-28 02:53:33,178 INFO L175 Difference]: Start difference. First operand has 185 places, 212 transitions, 3505 flow. Second operand 10 states and 108 transitions. [2024-11-28 02:53:33,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 271 transitions, 4732 flow [2024-11-28 02:53:33,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 271 transitions, 4588 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-28 02:53:33,372 INFO L231 Difference]: Finished difference. Result has 193 places, 227 transitions, 3947 flow [2024-11-28 02:53:33,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3947, PETRI_PLACES=193, PETRI_TRANSITIONS=227} [2024-11-28 02:53:33,373 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 167 predicate places. [2024-11-28 02:53:33,373 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 227 transitions, 3947 flow [2024-11-28 02:53:33,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:33,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:33,373 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] [2024-11-28 02:53:33,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:53:33,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 02:53:33,574 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:33,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:33,574 INFO L85 PathProgramCache]: Analyzing trace with hash 184399080, now seen corresponding path program 13 times [2024-11-28 02:53:33,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:33,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492724764] [2024-11-28 02:53:33,574 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:53:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:33,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492724764] [2024-11-28 02:53:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492724764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061070793] [2024-11-28 02:53:33,854 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:53:33,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:33,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:33,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:33,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:53:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:33,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:53:33,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:34,042 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 02:53:34,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 02:53:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:34,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:34,145 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 02:53:34,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-28 02:53:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:34,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061070793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:34,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:34,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-28 02:53:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305678260] [2024-11-28 02:53:34,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:34,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:53:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:34,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:53:34,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:53:34,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:34,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 227 transitions, 3947 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:34,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:34,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:34,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:35,238 INFO L124 PetriNetUnfolderBase]: 2681/4691 cut-off events. [2024-11-28 02:53:35,238 INFO L125 PetriNetUnfolderBase]: For 55379/55379 co-relation queries the response was YES. [2024-11-28 02:53:35,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28247 conditions, 4691 events. 2681/4691 cut-off events. For 55379/55379 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 30749 event pairs, 409 based on Foata normal form. 40/4731 useless extension candidates. Maximal degree in co-relation 27327. Up to 2523 conditions per place. [2024-11-28 02:53:35,281 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 192 selfloop transitions, 85 changer transitions 2/280 dead transitions. [2024-11-28 02:53:35,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 280 transitions, 5005 flow [2024-11-28 02:53:35,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:53:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:53:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-11-28 02:53:35,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-28 02:53:35,283 INFO L175 Difference]: Start difference. First operand has 193 places, 227 transitions, 3947 flow. Second operand 10 states and 100 transitions. [2024-11-28 02:53:35,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 280 transitions, 5005 flow [2024-11-28 02:53:35,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 280 transitions, 4870 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-28 02:53:35,501 INFO L231 Difference]: Finished difference. Result has 200 places, 231 transitions, 4097 flow [2024-11-28 02:53:35,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4097, PETRI_PLACES=200, PETRI_TRANSITIONS=231} [2024-11-28 02:53:35,502 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 174 predicate places. [2024-11-28 02:53:35,502 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 231 transitions, 4097 flow [2024-11-28 02:53:35,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:35,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:35,502 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] [2024-11-28 02:53:35,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:53:35,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:35,703 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:35,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash 870057898, now seen corresponding path program 9 times [2024-11-28 02:53:35,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:35,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008117972] [2024-11-28 02:53:35,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:35,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:35,723 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:53:35,723 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:35,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008117972] [2024-11-28 02:53:35,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008117972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427811152] [2024-11-28 02:53:35,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:35,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:35,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:35,987 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:35,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:53:36,095 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:53:36,095 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:36,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:53:36,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:36,180 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 02:53:36,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 02:53:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:36,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:36,293 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 02:53:36,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 02:53:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427811152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:36,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:36,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-11-28 02:53:36,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821807778] [2024-11-28 02:53:36,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:36,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:53:36,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:36,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:53:36,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:53:36,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:36,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 231 transitions, 4097 flow. Second operand has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:36,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:36,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:36,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:37,358 INFO L124 PetriNetUnfolderBase]: 2741/4793 cut-off events. [2024-11-28 02:53:37,358 INFO L125 PetriNetUnfolderBase]: For 58510/58510 co-relation queries the response was YES. [2024-11-28 02:53:37,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29378 conditions, 4793 events. 2741/4793 cut-off events. For 58510/58510 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 31344 event pairs, 1203 based on Foata normal form. 42/4835 useless extension candidates. Maximal degree in co-relation 28508. Up to 3004 conditions per place. [2024-11-28 02:53:37,401 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 189 selfloop transitions, 88 changer transitions 0/278 dead transitions. [2024-11-28 02:53:37,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 278 transitions, 5051 flow [2024-11-28 02:53:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:53:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:53:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-11-28 02:53:37,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-11-28 02:53:37,403 INFO L175 Difference]: Start difference. First operand has 200 places, 231 transitions, 4097 flow. Second operand 10 states and 106 transitions. [2024-11-28 02:53:37,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 278 transitions, 5051 flow [2024-11-28 02:53:37,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 278 transitions, 4790 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:37,593 INFO L231 Difference]: Finished difference. Result has 204 places, 239 transitions, 4218 flow [2024-11-28 02:53:37,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3858, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4218, PETRI_PLACES=204, PETRI_TRANSITIONS=239} [2024-11-28 02:53:37,594 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2024-11-28 02:53:37,594 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 239 transitions, 4218 flow [2024-11-28 02:53:37,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:37,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:37,594 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] [2024-11-28 02:53:37,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:53:37,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:37,795 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:37,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1326670836, now seen corresponding path program 14 times [2024-11-28 02:53:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566988640] [2024-11-28 02:53:37,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:37,813 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:53:37,813 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:38,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:38,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566988640] [2024-11-28 02:53:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566988640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076433238] [2024-11-28 02:53:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:38,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:38,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:38,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:38,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:38,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 239 transitions, 4218 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:38,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:38,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:38,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:39,176 INFO L124 PetriNetUnfolderBase]: 2816/4910 cut-off events. [2024-11-28 02:53:39,176 INFO L125 PetriNetUnfolderBase]: For 58883/58883 co-relation queries the response was YES. [2024-11-28 02:53:39,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29984 conditions, 4910 events. 2816/4910 cut-off events. For 58883/58883 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 32129 event pairs, 1285 based on Foata normal form. 36/4946 useless extension candidates. Maximal degree in co-relation 29015. Up to 3040 conditions per place. [2024-11-28 02:53:39,222 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 181 selfloop transitions, 100 changer transitions 0/282 dead transitions. [2024-11-28 02:53:39,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 282 transitions, 5274 flow [2024-11-28 02:53:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-28 02:53:39,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-28 02:53:39,223 INFO L175 Difference]: Start difference. First operand has 204 places, 239 transitions, 4218 flow. Second operand 9 states and 96 transitions. [2024-11-28 02:53:39,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 282 transitions, 5274 flow [2024-11-28 02:53:39,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 282 transitions, 5038 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:39,424 INFO L231 Difference]: Finished difference. Result has 208 places, 253 transitions, 4548 flow [2024-11-28 02:53:39,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4000, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4548, PETRI_PLACES=208, PETRI_TRANSITIONS=253} [2024-11-28 02:53:39,424 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 182 predicate places. [2024-11-28 02:53:39,425 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 253 transitions, 4548 flow [2024-11-28 02:53:39,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:39,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:39,425 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] [2024-11-28 02:53:39,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-28 02:53:39,425 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:39,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1955603928, now seen corresponding path program 15 times [2024-11-28 02:53:39,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:39,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556132633] [2024-11-28 02:53:39,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:39,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:39,448 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:53:39,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:39,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556132633] [2024-11-28 02:53:39,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556132633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:39,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841535148] [2024-11-28 02:53:39,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:53:39,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:39,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:39,720 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:39,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:53:39,833 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:53:39,834 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:39,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:53:39,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:39,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:53:39,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 02:53:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:39,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:40,040 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 02:53:40,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 02:53:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:40,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841535148] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:40,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:53:40,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-11-28 02:53:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664539224] [2024-11-28 02:53:40,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:40,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:53:40,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:40,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:53:40,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:53:40,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:40,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 253 transitions, 4548 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:40,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:40,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:40,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:41,039 INFO L124 PetriNetUnfolderBase]: 2885/5102 cut-off events. [2024-11-28 02:53:41,039 INFO L125 PetriNetUnfolderBase]: For 54559/54559 co-relation queries the response was YES. [2024-11-28 02:53:41,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29994 conditions, 5102 events. 2885/5102 cut-off events. For 54559/54559 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 34255 event pairs, 1253 based on Foata normal form. 36/5138 useless extension candidates. Maximal degree in co-relation 28705. Up to 3017 conditions per place. [2024-11-28 02:53:41,089 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 194 selfloop transitions, 94 changer transitions 0/289 dead transitions. [2024-11-28 02:53:41,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 289 transitions, 5353 flow [2024-11-28 02:53:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-11-28 02:53:41,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-11-28 02:53:41,090 INFO L175 Difference]: Start difference. First operand has 208 places, 253 transitions, 4548 flow. Second operand 7 states and 93 transitions. [2024-11-28 02:53:41,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 289 transitions, 5353 flow [2024-11-28 02:53:41,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 289 transitions, 5129 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-28 02:53:41,294 INFO L231 Difference]: Finished difference. Result has 210 places, 255 transitions, 4586 flow [2024-11-28 02:53:41,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4328, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4586, PETRI_PLACES=210, PETRI_TRANSITIONS=255} [2024-11-28 02:53:41,295 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 184 predicate places. [2024-11-28 02:53:41,295 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 255 transitions, 4586 flow [2024-11-28 02:53:41,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:41,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:41,295 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] [2024-11-28 02:53:41,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 02:53:41,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:41,496 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:41,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1764527008, now seen corresponding path program 16 times [2024-11-28 02:53:41,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:41,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959460667] [2024-11-28 02:53:41,496 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:41,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:41,507 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:41,507 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:41,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:41,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959460667] [2024-11-28 02:53:41,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959460667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:41,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:41,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:53:41,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542800457] [2024-11-28 02:53:41,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:41,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:53:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:41,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:53:41,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:53:41,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:41,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 255 transitions, 4586 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:41,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:41,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:41,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:42,582 INFO L124 PetriNetUnfolderBase]: 2849/5066 cut-off events. [2024-11-28 02:53:42,582 INFO L125 PetriNetUnfolderBase]: For 49827/49827 co-relation queries the response was YES. [2024-11-28 02:53:42,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29372 conditions, 5066 events. 2849/5066 cut-off events. For 49827/49827 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 34360 event pairs, 1156 based on Foata normal form. 36/5102 useless extension candidates. Maximal degree in co-relation 28822. Up to 3188 conditions per place. [2024-11-28 02:53:42,637 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 192 selfloop transitions, 96 changer transitions 2/291 dead transitions. [2024-11-28 02:53:42,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 291 transitions, 5433 flow [2024-11-28 02:53:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-28 02:53:42,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-28 02:53:42,638 INFO L175 Difference]: Start difference. First operand has 210 places, 255 transitions, 4586 flow. Second operand 7 states and 86 transitions. [2024-11-28 02:53:42,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 291 transitions, 5433 flow [2024-11-28 02:53:42,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 291 transitions, 5268 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-28 02:53:42,925 INFO L231 Difference]: Finished difference. Result has 215 places, 255 transitions, 4600 flow [2024-11-28 02:53:42,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4600, PETRI_PLACES=215, PETRI_TRANSITIONS=255} [2024-11-28 02:53:42,925 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 189 predicate places. [2024-11-28 02:53:42,926 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 255 transitions, 4600 flow [2024-11-28 02:53:42,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:42,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:42,926 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] [2024-11-28 02:53:42,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 02:53:42,926 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:42,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:42,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1898125642, now seen corresponding path program 17 times [2024-11-28 02:53:42,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:42,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170501314] [2024-11-28 02:53:42,927 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:42,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:42,938 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:42,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:53:43,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170501314] [2024-11-28 02:53:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170501314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779756173] [2024-11-28 02:53:43,291 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:43,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:43,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:43,296 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:43,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:53:43,426 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:43,426 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:43,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:53:43,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:43,653 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:53:43,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 02:53:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:43,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:53:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779756173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:43,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:53:43,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-28 02:53:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353846143] [2024-11-28 02:53:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:43,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:43,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:43,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:53:43,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:43,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 255 transitions, 4600 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:43,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:43,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:43,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:44,777 INFO L124 PetriNetUnfolderBase]: 2726/4808 cut-off events. [2024-11-28 02:53:44,777 INFO L125 PetriNetUnfolderBase]: For 44193/44193 co-relation queries the response was YES. [2024-11-28 02:53:44,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28463 conditions, 4808 events. 2726/4808 cut-off events. For 44193/44193 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 31886 event pairs, 1233 based on Foata normal form. 15/4823 useless extension candidates. Maximal degree in co-relation 28143. Up to 2983 conditions per place. [2024-11-28 02:53:44,837 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 178 selfloop transitions, 94 changer transitions 5/278 dead transitions. [2024-11-28 02:53:44,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 278 transitions, 5258 flow [2024-11-28 02:53:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-11-28 02:53:44,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-28 02:53:44,838 INFO L175 Difference]: Start difference. First operand has 215 places, 255 transitions, 4600 flow. Second operand 9 states and 92 transitions. [2024-11-28 02:53:44,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 278 transitions, 5258 flow [2024-11-28 02:53:45,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 278 transitions, 4972 flow, removed 16 selfloop flow, removed 16 redundant places. [2024-11-28 02:53:45,057 INFO L231 Difference]: Finished difference. Result has 207 places, 252 transitions, 4450 flow [2024-11-28 02:53:45,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4297, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4450, PETRI_PLACES=207, PETRI_TRANSITIONS=252} [2024-11-28 02:53:45,057 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 181 predicate places. [2024-11-28 02:53:45,057 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 252 transitions, 4450 flow [2024-11-28 02:53:45,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:45,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:45,058 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] [2024-11-28 02:53:45,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:53:45,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:45,258 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:45,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1799504996, now seen corresponding path program 18 times [2024-11-28 02:53:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619325170] [2024-11-28 02:53:45,259 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:53:45,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:45,269 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:53:45,269 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:45,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:45,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619325170] [2024-11-28 02:53:45,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619325170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:45,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:45,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:45,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422823951] [2024-11-28 02:53:45,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:45,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:45,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:45,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:45,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:45,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 252 transitions, 4450 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:45,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:45,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:45,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:46,489 INFO L124 PetriNetUnfolderBase]: 2615/4574 cut-off events. [2024-11-28 02:53:46,489 INFO L125 PetriNetUnfolderBase]: For 41996/41996 co-relation queries the response was YES. [2024-11-28 02:53:46,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26923 conditions, 4574 events. 2615/4574 cut-off events. For 41996/41996 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 29823 event pairs, 994 based on Foata normal form. 15/4589 useless extension candidates. Maximal degree in co-relation 25710. Up to 2776 conditions per place. [2024-11-28 02:53:46,561 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 181 selfloop transitions, 91 changer transitions 5/278 dead transitions. [2024-11-28 02:53:46,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 278 transitions, 5145 flow [2024-11-28 02:53:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:46,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-28 02:53:46,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-11-28 02:53:46,562 INFO L175 Difference]: Start difference. First operand has 207 places, 252 transitions, 4450 flow. Second operand 9 states and 86 transitions. [2024-11-28 02:53:46,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 278 transitions, 5145 flow [2024-11-28 02:53:46,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 278 transitions, 4959 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:46,821 INFO L231 Difference]: Finished difference. Result has 207 places, 249 transitions, 4389 flow [2024-11-28 02:53:46,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4242, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4389, PETRI_PLACES=207, PETRI_TRANSITIONS=249} [2024-11-28 02:53:46,822 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 181 predicate places. [2024-11-28 02:53:46,822 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 249 transitions, 4389 flow [2024-11-28 02:53:46,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:46,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:46,822 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] [2024-11-28 02:53:46,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-28 02:53:46,823 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:46,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1922004700, now seen corresponding path program 19 times [2024-11-28 02:53:46,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:46,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080949416] [2024-11-28 02:53:46,824 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:53:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:47,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080949416] [2024-11-28 02:53:47,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080949416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:47,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649622535] [2024-11-28 02:53:47,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:47,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:47,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:47,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:47,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:47,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:47,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 249 transitions, 4389 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:47,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:47,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:47,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:48,006 INFO L124 PetriNetUnfolderBase]: 2609/4568 cut-off events. [2024-11-28 02:53:48,006 INFO L125 PetriNetUnfolderBase]: For 44223/44223 co-relation queries the response was YES. [2024-11-28 02:53:48,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27077 conditions, 4568 events. 2609/4568 cut-off events. For 44223/44223 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 29688 event pairs, 1146 based on Foata normal form. 15/4583 useless extension candidates. Maximal degree in co-relation 25856. Up to 2776 conditions per place. [2024-11-28 02:53:48,041 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 175 selfloop transitions, 91 changer transitions 4/271 dead transitions. [2024-11-28 02:53:48,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 271 transitions, 5023 flow [2024-11-28 02:53:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-28 02:53:48,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-28 02:53:48,042 INFO L175 Difference]: Start difference. First operand has 207 places, 249 transitions, 4389 flow. Second operand 9 states and 87 transitions. [2024-11-28 02:53:48,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 271 transitions, 5023 flow [2024-11-28 02:53:48,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 271 transitions, 4878 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-28 02:53:48,215 INFO L231 Difference]: Finished difference. Result has 209 places, 249 transitions, 4432 flow [2024-11-28 02:53:48,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4432, PETRI_PLACES=209, PETRI_TRANSITIONS=249} [2024-11-28 02:53:48,215 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 183 predicate places. [2024-11-28 02:53:48,215 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 249 transitions, 4432 flow [2024-11-28 02:53:48,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:48,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:48,216 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] [2024-11-28 02:53:48,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-28 02:53:48,216 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:48,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1691468736, now seen corresponding path program 10 times [2024-11-28 02:53:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:48,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852386048] [2024-11-28 02:53:48,216 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:48,225 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:48,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:48,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852386048] [2024-11-28 02:53:48,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852386048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856168072] [2024-11-28 02:53:48,329 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:53:48,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:48,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:48,333 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:48,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:53:48,441 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:53:48,441 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:48,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:53:48,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:48,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:53:48,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 02:53:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:48,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:48,675 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 02:53:48,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-28 02:53:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:48,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856168072] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:48,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:53:48,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 9] total 18 [2024-11-28 02:53:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757111914] [2024-11-28 02:53:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:48,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:53:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:48,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:53:48,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:53:48,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:48,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 249 transitions, 4432 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:48,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:48,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:48,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:49,495 INFO L124 PetriNetUnfolderBase]: 2768/4892 cut-off events. [2024-11-28 02:53:49,495 INFO L125 PetriNetUnfolderBase]: For 48949/48949 co-relation queries the response was YES. [2024-11-28 02:53:49,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28721 conditions, 4892 events. 2768/4892 cut-off events. For 48949/48949 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 32765 event pairs, 1049 based on Foata normal form. 42/4934 useless extension candidates. Maximal degree in co-relation 27332. Up to 2831 conditions per place. [2024-11-28 02:53:49,557 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 201 selfloop transitions, 93 changer transitions 2/297 dead transitions. [2024-11-28 02:53:49,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 297 transitions, 5509 flow [2024-11-28 02:53:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:53:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:53:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-11-28 02:53:49,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2024-11-28 02:53:49,558 INFO L175 Difference]: Start difference. First operand has 209 places, 249 transitions, 4432 flow. Second operand 7 states and 89 transitions. [2024-11-28 02:53:49,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 297 transitions, 5509 flow [2024-11-28 02:53:49,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 297 transitions, 5301 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 02:53:49,813 INFO L231 Difference]: Finished difference. Result has 210 places, 260 transitions, 4736 flow [2024-11-28 02:53:49,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4736, PETRI_PLACES=210, PETRI_TRANSITIONS=260} [2024-11-28 02:53:49,813 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 184 predicate places. [2024-11-28 02:53:49,813 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 260 transitions, 4736 flow [2024-11-28 02:53:49,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:49,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:49,814 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] [2024-11-28 02:53:49,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:53:50,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 02:53:50,014 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:50,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2050342784, now seen corresponding path program 11 times [2024-11-28 02:53:50,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:50,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615838648] [2024-11-28 02:53:50,015 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:50,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:50,030 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:50,030 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:53:50,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615838648] [2024-11-28 02:53:50,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615838648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304785697] [2024-11-28 02:53:50,266 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:53:50,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:50,268 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:50,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:53:50,377 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:53:50,377 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:50,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 02:53:50,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:50,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:53:50,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2024-11-28 02:53:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:50,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:50,848 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2024-11-28 02:53:50,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2024-11-28 02:53:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:53:51,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304785697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:51,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:51,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2024-11-28 02:53:51,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590479231] [2024-11-28 02:53:51,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:51,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:53:51,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:51,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:53:51,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:53:51,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:51,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 260 transitions, 4736 flow. Second operand has 27 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:53:51,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:51,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:51,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:54,547 INFO L124 PetriNetUnfolderBase]: 3297/5813 cut-off events. [2024-11-28 02:53:54,547 INFO L125 PetriNetUnfolderBase]: For 50991/50991 co-relation queries the response was YES. [2024-11-28 02:53:54,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32770 conditions, 5813 events. 3297/5813 cut-off events. For 50991/50991 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 39789 event pairs, 514 based on Foata normal form. 20/5833 useless extension candidates. Maximal degree in co-relation 31533. Up to 1046 conditions per place. [2024-11-28 02:53:54,606 INFO L140 encePairwiseOnDemand]: 12/28 looper letters, 359 selfloop transitions, 230 changer transitions 23/613 dead transitions. [2024-11-28 02:53:54,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 613 transitions, 9022 flow [2024-11-28 02:53:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:53:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-28 02:53:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 502 transitions. [2024-11-28 02:53:54,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37351190476190477 [2024-11-28 02:53:54,608 INFO L175 Difference]: Start difference. First operand has 210 places, 260 transitions, 4736 flow. Second operand 48 states and 502 transitions. [2024-11-28 02:53:54,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 613 transitions, 9022 flow [2024-11-28 02:53:54,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 613 transitions, 8757 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-28 02:53:54,847 INFO L231 Difference]: Finished difference. Result has 273 places, 373 transitions, 6896 flow [2024-11-28 02:53:54,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4470, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=6896, PETRI_PLACES=273, PETRI_TRANSITIONS=373} [2024-11-28 02:53:54,848 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 247 predicate places. [2024-11-28 02:53:54,848 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 373 transitions, 6896 flow [2024-11-28 02:53:54,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:53:54,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:54,848 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] [2024-11-28 02:53:54,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:53:55,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 02:53:55,049 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:55,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2105644032, now seen corresponding path program 12 times [2024-11-28 02:53:55,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:55,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049453471] [2024-11-28 02:53:55,050 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:53:55,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:55,061 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:53:55,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:55,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:55,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049453471] [2024-11-28 02:53:55,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049453471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:55,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:55,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:55,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923624683] [2024-11-28 02:53:55,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:55,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:55,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:55,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:55,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:55,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:55,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 373 transitions, 6896 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:55,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:55,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:55,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:56,610 INFO L124 PetriNetUnfolderBase]: 3266/5757 cut-off events. [2024-11-28 02:53:56,611 INFO L125 PetriNetUnfolderBase]: For 81525/81525 co-relation queries the response was YES. [2024-11-28 02:53:56,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38035 conditions, 5757 events. 3266/5757 cut-off events. For 81525/81525 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 39191 event pairs, 1415 based on Foata normal form. 12/5769 useless extension candidates. Maximal degree in co-relation 36923. Up to 3538 conditions per place. [2024-11-28 02:53:56,716 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 249 selfloop transitions, 137 changer transitions 6/393 dead transitions. [2024-11-28 02:53:56,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 393 transitions, 7829 flow [2024-11-28 02:53:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-28 02:53:56,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2024-11-28 02:53:56,717 INFO L175 Difference]: Start difference. First operand has 273 places, 373 transitions, 6896 flow. Second operand 9 states and 88 transitions. [2024-11-28 02:53:56,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 393 transitions, 7829 flow [2024-11-28 02:53:57,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 393 transitions, 7181 flow, removed 168 selfloop flow, removed 12 redundant places. [2024-11-28 02:53:57,245 INFO L231 Difference]: Finished difference. Result has 266 places, 370 transitions, 6448 flow [2024-11-28 02:53:57,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6248, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6448, PETRI_PLACES=266, PETRI_TRANSITIONS=370} [2024-11-28 02:53:57,246 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 240 predicate places. [2024-11-28 02:53:57,246 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 370 transitions, 6448 flow [2024-11-28 02:53:57,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:57,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:57,246 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] [2024-11-28 02:53:57,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-28 02:53:57,246 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:57,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1384149122, now seen corresponding path program 20 times [2024-11-28 02:53:57,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:57,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161472489] [2024-11-28 02:53:57,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:53:57,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:57,258 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:53:57,258 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:53:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:57,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161472489] [2024-11-28 02:53:57,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161472489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:57,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:57,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:57,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047939966] [2024-11-28 02:53:57,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:57,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:57,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:57,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:57,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:57,500 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:57,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 370 transitions, 6448 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:57,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:57,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:57,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:53:58,859 INFO L124 PetriNetUnfolderBase]: 3151/5512 cut-off events. [2024-11-28 02:53:58,859 INFO L125 PetriNetUnfolderBase]: For 69956/69956 co-relation queries the response was YES. [2024-11-28 02:53:58,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36063 conditions, 5512 events. 3151/5512 cut-off events. For 69956/69956 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 36853 event pairs, 1336 based on Foata normal form. 15/5527 useless extension candidates. Maximal degree in co-relation 35677. Up to 3331 conditions per place. [2024-11-28 02:53:58,928 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 247 selfloop transitions, 132 changer transitions 5/385 dead transitions. [2024-11-28 02:53:58,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 385 transitions, 7268 flow [2024-11-28 02:53:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:53:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:53:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-28 02:53:58,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3373015873015873 [2024-11-28 02:53:58,929 INFO L175 Difference]: Start difference. First operand has 266 places, 370 transitions, 6448 flow. Second operand 9 states and 85 transitions. [2024-11-28 02:53:58,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 385 transitions, 7268 flow [2024-11-28 02:53:59,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 385 transitions, 6989 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-28 02:53:59,293 INFO L231 Difference]: Finished difference. Result has 263 places, 365 transitions, 6329 flow [2024-11-28 02:53:59,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6329, PETRI_PLACES=263, PETRI_TRANSITIONS=365} [2024-11-28 02:53:59,294 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 237 predicate places. [2024-11-28 02:53:59,294 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 365 transitions, 6329 flow [2024-11-28 02:53:59,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:59,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:53:59,295 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] [2024-11-28 02:53:59,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-28 02:53:59,295 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:53:59,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash -773518546, now seen corresponding path program 13 times [2024-11-28 02:53:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:59,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014564465] [2024-11-28 02:53:59,296 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:53:59,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:53:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014564465] [2024-11-28 02:53:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014564465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:59,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:59,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:53:59,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787123664] [2024-11-28 02:53:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:59,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:53:59,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:59,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:53:59,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:53:59,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:53:59,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 365 transitions, 6329 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:53:59,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:53:59,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:53:59,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:01,069 INFO L124 PetriNetUnfolderBase]: 3133/5479 cut-off events. [2024-11-28 02:54:01,069 INFO L125 PetriNetUnfolderBase]: For 68509/68509 co-relation queries the response was YES. [2024-11-28 02:54:01,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35703 conditions, 5479 events. 3133/5479 cut-off events. For 68509/68509 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 36650 event pairs, 1207 based on Foata normal form. 12/5491 useless extension candidates. Maximal degree in co-relation 35329. Up to 3331 conditions per place. [2024-11-28 02:54:01,149 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 227 selfloop transitions, 151 changer transitions 5/384 dead transitions. [2024-11-28 02:54:01,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 384 transitions, 7210 flow [2024-11-28 02:54:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:54:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:54:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-28 02:54:01,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32936507936507936 [2024-11-28 02:54:01,151 INFO L175 Difference]: Start difference. First operand has 263 places, 365 transitions, 6329 flow. Second operand 9 states and 83 transitions. [2024-11-28 02:54:01,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 384 transitions, 7210 flow [2024-11-28 02:54:01,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 384 transitions, 6825 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-28 02:54:01,569 INFO L231 Difference]: Finished difference. Result has 255 places, 359 transitions, 6092 flow [2024-11-28 02:54:01,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5842, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6092, PETRI_PLACES=255, PETRI_TRANSITIONS=359} [2024-11-28 02:54:01,569 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 229 predicate places. [2024-11-28 02:54:01,569 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 359 transitions, 6092 flow [2024-11-28 02:54:01,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:01,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:01,570 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] [2024-11-28 02:54:01,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-28 02:54:01,570 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:01,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash -874852140, now seen corresponding path program 14 times [2024-11-28 02:54:01,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:01,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150117290] [2024-11-28 02:54:01,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:54:01,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:01,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:01,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:01,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:01,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150117290] [2024-11-28 02:54:01,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150117290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:01,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:01,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:54:01,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329990881] [2024-11-28 02:54:01,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:01,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:54:01,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:01,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:54:01,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:54:01,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:01,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 359 transitions, 6092 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:01,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:01,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:01,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:02,975 INFO L124 PetriNetUnfolderBase]: 3016/5229 cut-off events. [2024-11-28 02:54:02,975 INFO L125 PetriNetUnfolderBase]: For 65590/65590 co-relation queries the response was YES. [2024-11-28 02:54:03,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34472 conditions, 5229 events. 3016/5229 cut-off events. For 65590/65590 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 34441 event pairs, 1088 based on Foata normal form. 12/5241 useless extension candidates. Maximal degree in co-relation 33881. Up to 3331 conditions per place. [2024-11-28 02:54:03,029 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 237 selfloop transitions, 143 changer transitions 10/391 dead transitions. [2024-11-28 02:54:03,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 391 transitions, 7130 flow [2024-11-28 02:54:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:54:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:54:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-28 02:54:03,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-28 02:54:03,030 INFO L175 Difference]: Start difference. First operand has 255 places, 359 transitions, 6092 flow. Second operand 9 states and 87 transitions. [2024-11-28 02:54:03,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 391 transitions, 7130 flow [2024-11-28 02:54:03,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 391 transitions, 6821 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-28 02:54:03,525 INFO L231 Difference]: Finished difference. Result has 253 places, 351 transitions, 5860 flow [2024-11-28 02:54:03,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5683, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5860, PETRI_PLACES=253, PETRI_TRANSITIONS=351} [2024-11-28 02:54:03,526 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-11-28 02:54:03,526 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 351 transitions, 5860 flow [2024-11-28 02:54:03,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:03,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:03,526 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] [2024-11-28 02:54:03,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-28 02:54:03,527 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:03,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1176630732, now seen corresponding path program 15 times [2024-11-28 02:54:03,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:03,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541202808] [2024-11-28 02:54:03,527 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:54:03,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:03,540 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:54:03,540 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:03,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:03,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541202808] [2024-11-28 02:54:03,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541202808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:03,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:03,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:54:03,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897318398] [2024-11-28 02:54:03,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:03,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:54:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:03,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:54:03,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:54:03,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:03,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 351 transitions, 5860 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:03,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:03,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:03,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:04,981 INFO L124 PetriNetUnfolderBase]: 2978/5163 cut-off events. [2024-11-28 02:54:04,981 INFO L125 PetriNetUnfolderBase]: For 64789/64789 co-relation queries the response was YES. [2024-11-28 02:54:05,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33925 conditions, 5163 events. 2978/5163 cut-off events. For 64789/64789 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 33678 event pairs, 1300 based on Foata normal form. 12/5175 useless extension candidates. Maximal degree in co-relation 33335. Up to 3331 conditions per place. [2024-11-28 02:54:05,060 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 237 selfloop transitions, 121 changer transitions 5/364 dead transitions. [2024-11-28 02:54:05,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 364 transitions, 6629 flow [2024-11-28 02:54:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:54:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:54:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-28 02:54:05,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32936507936507936 [2024-11-28 02:54:05,062 INFO L175 Difference]: Start difference. First operand has 253 places, 351 transitions, 5860 flow. Second operand 9 states and 83 transitions. [2024-11-28 02:54:05,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 364 transitions, 6629 flow [2024-11-28 02:54:05,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 364 transitions, 6350 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-28 02:54:05,431 INFO L231 Difference]: Finished difference. Result has 250 places, 345 transitions, 5685 flow [2024-11-28 02:54:05,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5504, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5685, PETRI_PLACES=250, PETRI_TRANSITIONS=345} [2024-11-28 02:54:05,432 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 224 predicate places. [2024-11-28 02:54:05,432 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 345 transitions, 5685 flow [2024-11-28 02:54:05,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:05,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:05,433 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] [2024-11-28 02:54:05,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-28 02:54:05,433 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:05,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:05,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1165793186, now seen corresponding path program 16 times [2024-11-28 02:54:05,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:05,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690482689] [2024-11-28 02:54:05,434 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:54:05,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:05,448 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:54:05,448 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690482689] [2024-11-28 02:54:05,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690482689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:05,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:05,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:54:05,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34682306] [2024-11-28 02:54:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:05,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:54:05,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:05,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:54:05,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:54:05,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:05,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 345 transitions, 5685 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:05,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:05,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:05,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:07,043 INFO L124 PetriNetUnfolderBase]: 3047/5271 cut-off events. [2024-11-28 02:54:07,043 INFO L125 PetriNetUnfolderBase]: For 66850/66850 co-relation queries the response was YES. [2024-11-28 02:54:07,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34755 conditions, 5271 events. 3047/5271 cut-off events. For 66850/66850 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 34470 event pairs, 1296 based on Foata normal form. 51/5322 useless extension candidates. Maximal degree in co-relation 34172. Up to 3395 conditions per place. [2024-11-28 02:54:07,096 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 257 selfloop transitions, 122 changer transitions 0/380 dead transitions. [2024-11-28 02:54:07,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 380 transitions, 6837 flow [2024-11-28 02:54:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:54:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:54:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-11-28 02:54:07,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-11-28 02:54:07,097 INFO L175 Difference]: Start difference. First operand has 250 places, 345 transitions, 5685 flow. Second operand 7 states and 82 transitions. [2024-11-28 02:54:07,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 380 transitions, 6837 flow [2024-11-28 02:54:07,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 380 transitions, 6557 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-28 02:54:07,422 INFO L231 Difference]: Finished difference. Result has 248 places, 352 transitions, 5810 flow [2024-11-28 02:54:07,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5419, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5810, PETRI_PLACES=248, PETRI_TRANSITIONS=352} [2024-11-28 02:54:07,423 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 222 predicate places. [2024-11-28 02:54:07,423 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 352 transitions, 5810 flow [2024-11-28 02:54:07,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:07,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:07,423 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] [2024-11-28 02:54:07,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-28 02:54:07,424 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:07,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash 153100654, now seen corresponding path program 17 times [2024-11-28 02:54:07,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:07,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548008438] [2024-11-28 02:54:07,425 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:54:07,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:07,441 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:07,441 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:07,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:07,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548008438] [2024-11-28 02:54:07,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548008438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:07,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801235166] [2024-11-28 02:54:07,704 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:54:07,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:07,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:07,706 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:07,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:54:07,824 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:07,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:07,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:54:07,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:07,915 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:54:07,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 02:54:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:07,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:08,036 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 02:54:08,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 02:54:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801235166] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:08,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:54:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 18 [2024-11-28 02:54:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130038185] [2024-11-28 02:54:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:08,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:54:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:08,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:54:08,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:54:08,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:08,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 352 transitions, 5810 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:08,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:08,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:08,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:09,203 INFO L124 PetriNetUnfolderBase]: 2936/5090 cut-off events. [2024-11-28 02:54:09,203 INFO L125 PetriNetUnfolderBase]: For 64237/64237 co-relation queries the response was YES. [2024-11-28 02:54:09,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33614 conditions, 5090 events. 2936/5090 cut-off events. For 64237/64237 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33116 event pairs, 1216 based on Foata normal form. 51/5141 useless extension candidates. Maximal degree in co-relation 33030. Up to 3395 conditions per place. [2024-11-28 02:54:09,266 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 250 selfloop transitions, 123 changer transitions 0/374 dead transitions. [2024-11-28 02:54:09,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 374 transitions, 6702 flow [2024-11-28 02:54:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:54:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:54:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-28 02:54:09,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-28 02:54:09,267 INFO L175 Difference]: Start difference. First operand has 248 places, 352 transitions, 5810 flow. Second operand 7 states and 86 transitions. [2024-11-28 02:54:09,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 374 transitions, 6702 flow [2024-11-28 02:54:09,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 374 transitions, 6518 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-28 02:54:09,751 INFO L231 Difference]: Finished difference. Result has 248 places, 343 transitions, 5772 flow [2024-11-28 02:54:09,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5772, PETRI_PLACES=248, PETRI_TRANSITIONS=343} [2024-11-28 02:54:09,751 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 222 predicate places. [2024-11-28 02:54:09,752 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 343 transitions, 5772 flow [2024-11-28 02:54:09,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:09,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:09,752 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:09,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:09,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-28 02:54:09,952 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:09,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash 354280981, now seen corresponding path program 1 times [2024-11-28 02:54:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:09,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196375843] [2024-11-28 02:54:09,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:10,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:10,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196375843] [2024-11-28 02:54:10,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196375843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016218062] [2024-11-28 02:54:10,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:10,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:10,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:10,053 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:10,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:54:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:10,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:54:10,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:10,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:10,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016218062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:10,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-11-28 02:54:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76196559] [2024-11-28 02:54:10,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:10,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:54:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:10,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:54:10,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:54:10,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:10,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 343 transitions, 5772 flow. Second operand has 16 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 0 states have call successors, (0), 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 02:54:10,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:10,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:10,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:12,064 INFO L124 PetriNetUnfolderBase]: 3016/5378 cut-off events. [2024-11-28 02:54:12,065 INFO L125 PetriNetUnfolderBase]: For 63188/63188 co-relation queries the response was YES. [2024-11-28 02:54:12,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35543 conditions, 5378 events. 3016/5378 cut-off events. For 63188/63188 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 36993 event pairs, 931 based on Foata normal form. 208/5586 useless extension candidates. Maximal degree in co-relation 35364. Up to 1430 conditions per place. [2024-11-28 02:54:12,149 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 379 selfloop transitions, 122 changer transitions 15/517 dead transitions. [2024-11-28 02:54:12,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 517 transitions, 9409 flow [2024-11-28 02:54:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:54:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 02:54:12,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 197 transitions. [2024-11-28 02:54:12,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41386554621848737 [2024-11-28 02:54:12,150 INFO L175 Difference]: Start difference. First operand has 248 places, 343 transitions, 5772 flow. Second operand 17 states and 197 transitions. [2024-11-28 02:54:12,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 517 transitions, 9409 flow [2024-11-28 02:54:12,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 517 transitions, 8796 flow, removed 45 selfloop flow, removed 19 redundant places. [2024-11-28 02:54:12,493 INFO L231 Difference]: Finished difference. Result has 236 places, 317 transitions, 5631 flow [2024-11-28 02:54:12,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4511, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5631, PETRI_PLACES=236, PETRI_TRANSITIONS=317} [2024-11-28 02:54:12,494 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 210 predicate places. [2024-11-28 02:54:12,494 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 317 transitions, 5631 flow [2024-11-28 02:54:12,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 0 states have call successors, (0), 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 02:54:12,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:12,494 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:12,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:54:12,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-28 02:54:12,695 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:12,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash -598488984, now seen corresponding path program 18 times [2024-11-28 02:54:12,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:12,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013279019] [2024-11-28 02:54:12,696 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:54:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:12,708 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:54:12,708 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:54:12,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:12,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013279019] [2024-11-28 02:54:12,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013279019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:12,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:12,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:54:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656186257] [2024-11-28 02:54:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:54:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:12,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:54:12,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:54:12,896 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:12,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 317 transitions, 5631 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:12,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:12,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:12,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:13,820 INFO L124 PetriNetUnfolderBase]: 2947/5247 cut-off events. [2024-11-28 02:54:13,820 INFO L125 PetriNetUnfolderBase]: For 57626/57626 co-relation queries the response was YES. [2024-11-28 02:54:13,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34472 conditions, 5247 events. 2947/5247 cut-off events. For 57626/57626 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 35995 event pairs, 1112 based on Foata normal form. 35/5282 useless extension candidates. Maximal degree in co-relation 34001. Up to 3264 conditions per place. [2024-11-28 02:54:13,866 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 167 selfloop transitions, 172 changer transitions 0/340 dead transitions. [2024-11-28 02:54:13,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 340 transitions, 6533 flow [2024-11-28 02:54:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:54:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:54:13,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-28 02:54:13,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32936507936507936 [2024-11-28 02:54:13,867 INFO L175 Difference]: Start difference. First operand has 236 places, 317 transitions, 5631 flow. Second operand 9 states and 83 transitions. [2024-11-28 02:54:13,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 340 transitions, 6533 flow [2024-11-28 02:54:14,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 340 transitions, 6426 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-28 02:54:14,280 INFO L231 Difference]: Finished difference. Result has 235 places, 321 transitions, 5978 flow [2024-11-28 02:54:14,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5978, PETRI_PLACES=235, PETRI_TRANSITIONS=321} [2024-11-28 02:54:14,281 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 209 predicate places. [2024-11-28 02:54:14,281 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 321 transitions, 5978 flow [2024-11-28 02:54:14,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:14,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:14,281 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:14,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-11-28 02:54:14,281 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:14,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -710122626, now seen corresponding path program 19 times [2024-11-28 02:54:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112919351] [2024-11-28 02:54:14,282 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:54:14,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:54:14,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:14,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112919351] [2024-11-28 02:54:14,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112919351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:14,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402226620] [2024-11-28 02:54:14,539 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:54:14,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:14,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:14,540 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:14,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:54:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:14,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:54:14,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:14,955 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:54:14,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2024-11-28 02:54:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:14,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:15,236 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2024-11-28 02:54:15,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 79 [2024-11-28 02:54:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:15,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402226620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:15,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:15,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2024-11-28 02:54:15,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058765388] [2024-11-28 02:54:15,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:15,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 02:54:15,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:15,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 02:54:15,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:54:15,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:15,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 321 transitions, 5978 flow. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 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 02:54:15,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:15,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:15,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:18,192 INFO L124 PetriNetUnfolderBase]: 2937/5210 cut-off events. [2024-11-28 02:54:18,192 INFO L125 PetriNetUnfolderBase]: For 59793/59793 co-relation queries the response was YES. [2024-11-28 02:54:18,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34807 conditions, 5210 events. 2937/5210 cut-off events. For 59793/59793 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 35493 event pairs, 968 based on Foata normal form. 37/5247 useless extension candidates. Maximal degree in co-relation 34530. Up to 1492 conditions per place. [2024-11-28 02:54:18,271 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 262 selfloop transitions, 202 changer transitions 9/474 dead transitions. [2024-11-28 02:54:18,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 474 transitions, 8580 flow [2024-11-28 02:54:18,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 02:54:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-28 02:54:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 252 transitions. [2024-11-28 02:54:18,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-11-28 02:54:18,273 INFO L175 Difference]: Start difference. First operand has 235 places, 321 transitions, 5978 flow. Second operand 28 states and 252 transitions. [2024-11-28 02:54:18,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 474 transitions, 8580 flow [2024-11-28 02:54:18,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 474 transitions, 8176 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-11-28 02:54:18,684 INFO L231 Difference]: Finished difference. Result has 257 places, 341 transitions, 6394 flow [2024-11-28 02:54:18,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5621, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6394, PETRI_PLACES=257, PETRI_TRANSITIONS=341} [2024-11-28 02:54:18,686 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 231 predicate places. [2024-11-28 02:54:18,686 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 341 transitions, 6394 flow [2024-11-28 02:54:18,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 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 02:54:18,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:18,687 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:18,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:18,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-28 02:54:18,888 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:18,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash -981556870, now seen corresponding path program 20 times [2024-11-28 02:54:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:18,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072416280] [2024-11-28 02:54:18,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:54:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:18,920 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:18,920 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:54:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072416280] [2024-11-28 02:54:19,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072416280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:54:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663805797] [2024-11-28 02:54:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:19,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:54:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:19,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:54:19,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:54:19,192 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:19,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 341 transitions, 6394 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:19,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:19,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:19,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:20,626 INFO L124 PetriNetUnfolderBase]: 2860/5032 cut-off events. [2024-11-28 02:54:20,626 INFO L125 PetriNetUnfolderBase]: For 57184/57184 co-relation queries the response was YES. [2024-11-28 02:54:20,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34171 conditions, 5032 events. 2860/5032 cut-off events. For 57184/57184 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 33780 event pairs, 1197 based on Foata normal form. 16/5048 useless extension candidates. Maximal degree in co-relation 33938. Up to 3662 conditions per place. [2024-11-28 02:54:20,691 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 214 selfloop transitions, 128 changer transitions 7/350 dead transitions. [2024-11-28 02:54:20,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 350 transitions, 7052 flow [2024-11-28 02:54:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:54:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:54:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 77 transitions. [2024-11-28 02:54:20,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-11-28 02:54:20,692 INFO L175 Difference]: Start difference. First operand has 257 places, 341 transitions, 6394 flow. Second operand 9 states and 77 transitions. [2024-11-28 02:54:20,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 350 transitions, 7052 flow [2024-11-28 02:54:21,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 350 transitions, 6615 flow, removed 21 selfloop flow, removed 26 redundant places. [2024-11-28 02:54:21,126 INFO L231 Difference]: Finished difference. Result has 239 places, 334 transitions, 6057 flow [2024-11-28 02:54:21,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5846, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6057, PETRI_PLACES=239, PETRI_TRANSITIONS=334} [2024-11-28 02:54:21,126 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 213 predicate places. [2024-11-28 02:54:21,126 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 334 transitions, 6057 flow [2024-11-28 02:54:21,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:21,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:21,127 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:21,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-11-28 02:54:21,127 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:21,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 673885092, now seen corresponding path program 1 times [2024-11-28 02:54:21,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:21,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86496923] [2024-11-28 02:54:21,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:21,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86496923] [2024-11-28 02:54:21,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86496923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524504498] [2024-11-28 02:54:21,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:21,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:21,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:21,218 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:21,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:54:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:21,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:54:21,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:21,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524504498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:21,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:21,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-28 02:54:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495190768] [2024-11-28 02:54:21,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:21,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:54:21,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:21,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:54:21,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:54:21,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:21,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 334 transitions, 6057 flow. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 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 02:54:21,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:21,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:21,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:22,402 INFO L124 PetriNetUnfolderBase]: 1993/3656 cut-off events. [2024-11-28 02:54:22,402 INFO L125 PetriNetUnfolderBase]: For 37469/37469 co-relation queries the response was YES. [2024-11-28 02:54:22,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24871 conditions, 3656 events. 1993/3656 cut-off events. For 37469/37469 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 24176 event pairs, 623 based on Foata normal form. 174/3830 useless extension candidates. Maximal degree in co-relation 23536. Up to 1310 conditions per place. [2024-11-28 02:54:22,431 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 222 selfloop transitions, 60 changer transitions 156/439 dead transitions. [2024-11-28 02:54:22,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 439 transitions, 8033 flow [2024-11-28 02:54:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:54:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 02:54:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 181 transitions. [2024-11-28 02:54:22,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3802521008403361 [2024-11-28 02:54:22,432 INFO L175 Difference]: Start difference. First operand has 239 places, 334 transitions, 6057 flow. Second operand 17 states and 181 transitions. [2024-11-28 02:54:22,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 439 transitions, 8033 flow [2024-11-28 02:54:22,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 439 transitions, 7547 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-11-28 02:54:22,594 INFO L231 Difference]: Finished difference. Result has 238 places, 212 transitions, 3832 flow [2024-11-28 02:54:22,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3832, PETRI_PLACES=238, PETRI_TRANSITIONS=212} [2024-11-28 02:54:22,594 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 212 predicate places. [2024-11-28 02:54:22,594 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 212 transitions, 3832 flow [2024-11-28 02:54:22,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 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 02:54:22,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:22,595 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:22,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:54:22,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:22,795 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:22,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash 798367881, now seen corresponding path program 1 times [2024-11-28 02:54:22,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:22,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484748181] [2024-11-28 02:54:22,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:22,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:22,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484748181] [2024-11-28 02:54:22,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484748181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:22,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820536286] [2024-11-28 02:54:22,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:22,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:22,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:22,961 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:22,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:54:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:23,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:54:23,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:23,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:23,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820536286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:23,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-28 02:54:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924015945] [2024-11-28 02:54:23,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:23,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:54:23,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:23,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:54:23,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:54:23,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:23,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 212 transitions, 3832 flow. Second operand has 20 states, 20 states have (on average 5.55) internal successors, (111), 20 states have internal predecessors, (111), 0 states have call successors, (0), 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 02:54:23,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:23,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:23,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:24,140 INFO L124 PetriNetUnfolderBase]: 1502/2724 cut-off events. [2024-11-28 02:54:24,140 INFO L125 PetriNetUnfolderBase]: For 27076/27076 co-relation queries the response was YES. [2024-11-28 02:54:24,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18126 conditions, 2724 events. 1502/2724 cut-off events. For 27076/27076 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 16824 event pairs, 684 based on Foata normal form. 2/2726 useless extension candidates. Maximal degree in co-relation 17142. Up to 1891 conditions per place. [2024-11-28 02:54:24,160 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 213 selfloop transitions, 14 changer transitions 20/248 dead transitions. [2024-11-28 02:54:24,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 248 transitions, 4605 flow [2024-11-28 02:54:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:54:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:54:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-11-28 02:54:24,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-11-28 02:54:24,161 INFO L175 Difference]: Start difference. First operand has 238 places, 212 transitions, 3832 flow. Second operand 10 states and 96 transitions. [2024-11-28 02:54:24,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 248 transitions, 4605 flow [2024-11-28 02:54:24,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 248 transitions, 4398 flow, removed 43 selfloop flow, removed 23 redundant places. [2024-11-28 02:54:24,263 INFO L231 Difference]: Finished difference. Result has 181 places, 203 transitions, 3541 flow [2024-11-28 02:54:24,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3661, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3541, PETRI_PLACES=181, PETRI_TRANSITIONS=203} [2024-11-28 02:54:24,264 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 155 predicate places. [2024-11-28 02:54:24,264 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 203 transitions, 3541 flow [2024-11-28 02:54:24,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.55) internal successors, (111), 20 states have internal predecessors, (111), 0 states have call successors, (0), 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 02:54:24,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:24,264 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:24,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:24,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-28 02:54:24,465 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:24,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:24,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1227600005, now seen corresponding path program 2 times [2024-11-28 02:54:24,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:24,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940410338] [2024-11-28 02:54:24,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:54:24,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:24,478 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:54:24,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:54:24,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940410338] [2024-11-28 02:54:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940410338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:24,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:24,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:54:24,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143069664] [2024-11-28 02:54:24,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:24,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:54:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:24,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:54:24,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:54:24,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:24,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 203 transitions, 3541 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 02:54:24,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:24,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:24,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:24,983 INFO L124 PetriNetUnfolderBase]: 1478/2641 cut-off events. [2024-11-28 02:54:24,983 INFO L125 PetriNetUnfolderBase]: For 19860/19860 co-relation queries the response was YES. [2024-11-28 02:54:25,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16321 conditions, 2641 events. 1478/2641 cut-off events. For 19860/19860 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 15986 event pairs, 168 based on Foata normal form. 4/2645 useless extension candidates. Maximal degree in co-relation 16246. Up to 1254 conditions per place. [2024-11-28 02:54:25,007 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 148 selfloop transitions, 16 changer transitions 84/249 dead transitions. [2024-11-28 02:54:25,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 249 transitions, 4520 flow [2024-11-28 02:54:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:54:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-28 02:54:25,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-28 02:54:25,008 INFO L175 Difference]: Start difference. First operand has 181 places, 203 transitions, 3541 flow. Second operand 5 states and 69 transitions. [2024-11-28 02:54:25,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 249 transitions, 4520 flow [2024-11-28 02:54:25,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 249 transitions, 4452 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-11-28 02:54:25,074 INFO L231 Difference]: Finished difference. Result has 176 places, 123 transitions, 1983 flow [2024-11-28 02:54:25,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1983, PETRI_PLACES=176, PETRI_TRANSITIONS=123} [2024-11-28 02:54:25,094 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 150 predicate places. [2024-11-28 02:54:25,095 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 123 transitions, 1983 flow [2024-11-28 02:54:25,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 02:54:25,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:25,095 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:25,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-11-28 02:54:25,095 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:25,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1858801603, now seen corresponding path program 3 times [2024-11-28 02:54:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903649550] [2024-11-28 02:54:25,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:54:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:25,106 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:54:25,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:25,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903649550] [2024-11-28 02:54:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903649550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:25,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:54:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368742475] [2024-11-28 02:54:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:25,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:54:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:25,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:54:25,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:54:25,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:25,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 123 transitions, 1983 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 02:54:25,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:25,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:25,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:25,448 INFO L124 PetriNetUnfolderBase]: 1008/1747 cut-off events. [2024-11-28 02:54:25,448 INFO L125 PetriNetUnfolderBase]: For 14468/14468 co-relation queries the response was YES. [2024-11-28 02:54:25,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10984 conditions, 1747 events. 1008/1747 cut-off events. For 14468/14468 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9316 event pairs, 128 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 10928. Up to 720 conditions per place. [2024-11-28 02:54:25,459 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 129 selfloop transitions, 14 changer transitions 26/170 dead transitions. [2024-11-28 02:54:25,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 170 transitions, 2799 flow [2024-11-28 02:54:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:54:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-28 02:54:25,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-11-28 02:54:25,460 INFO L175 Difference]: Start difference. First operand has 176 places, 123 transitions, 1983 flow. Second operand 5 states and 71 transitions. [2024-11-28 02:54:25,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 170 transitions, 2799 flow [2024-11-28 02:54:25,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 170 transitions, 2465 flow, removed 40 selfloop flow, removed 12 redundant places. [2024-11-28 02:54:25,512 INFO L231 Difference]: Finished difference. Result has 152 places, 101 transitions, 1349 flow [2024-11-28 02:54:25,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1349, PETRI_PLACES=152, PETRI_TRANSITIONS=101} [2024-11-28 02:54:25,513 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 126 predicate places. [2024-11-28 02:54:25,513 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 101 transitions, 1349 flow [2024-11-28 02:54:25,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 02:54:25,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:25,514 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:25,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-11-28 02:54:25,514 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:25,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash 55169296, now seen corresponding path program 2 times [2024-11-28 02:54:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:25,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253078192] [2024-11-28 02:54:25,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:54:25,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:25,529 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:25,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:25,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253078192] [2024-11-28 02:54:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253078192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128148003] [2024-11-28 02:54:25,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:54:25,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:25,619 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:25,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:54:25,755 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:25,755 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:25,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:54:25,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:25,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:25,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128148003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:25,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:25,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 02:54:25,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035087030] [2024-11-28 02:54:25,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:25,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:54:25,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:25,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:54:25,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:54:25,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:25,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 101 transitions, 1349 flow. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 02:54:25,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:25,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:25,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:26,507 INFO L124 PetriNetUnfolderBase]: 1358/2321 cut-off events. [2024-11-28 02:54:26,507 INFO L125 PetriNetUnfolderBase]: For 14811/14811 co-relation queries the response was YES. [2024-11-28 02:54:26,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13075 conditions, 2321 events. 1358/2321 cut-off events. For 14811/14811 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13011 event pairs, 251 based on Foata normal form. 5/2326 useless extension candidates. Maximal degree in co-relation 13019. Up to 809 conditions per place. [2024-11-28 02:54:26,523 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 164 selfloop transitions, 42 changer transitions 22/229 dead transitions. [2024-11-28 02:54:26,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 229 transitions, 2980 flow [2024-11-28 02:54:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:54:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 02:54:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-11-28 02:54:26,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-28 02:54:26,525 INFO L175 Difference]: Start difference. First operand has 152 places, 101 transitions, 1349 flow. Second operand 11 states and 140 transitions. [2024-11-28 02:54:26,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 229 transitions, 2980 flow [2024-11-28 02:54:26,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 229 transitions, 2800 flow, removed 87 selfloop flow, removed 6 redundant places. [2024-11-28 02:54:26,570 INFO L231 Difference]: Finished difference. Result has 155 places, 117 transitions, 1585 flow [2024-11-28 02:54:26,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1585, PETRI_PLACES=155, PETRI_TRANSITIONS=117} [2024-11-28 02:54:26,571 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 129 predicate places. [2024-11-28 02:54:26,571 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 117 transitions, 1585 flow [2024-11-28 02:54:26,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 02:54:26,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:26,571 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:26,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 02:54:26,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-28 02:54:26,772 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:26,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1446307664, now seen corresponding path program 3 times [2024-11-28 02:54:26,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:26,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424030115] [2024-11-28 02:54:26,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:54:26,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:26,785 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:54:26,785 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424030115] [2024-11-28 02:54:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424030115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323295138] [2024-11-28 02:54:26,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:54:26,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:26,876 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:26,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 02:54:27,028 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:54:27,029 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:27,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:54:27,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:27,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:27,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323295138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:27,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:27,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 02:54:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574532689] [2024-11-28 02:54:27,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:27,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:54:27,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:27,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:54:27,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:54:27,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:27,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 117 transitions, 1585 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 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 02:54:27,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:27,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:27,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:28,156 INFO L124 PetriNetUnfolderBase]: 1763/3070 cut-off events. [2024-11-28 02:54:28,156 INFO L125 PetriNetUnfolderBase]: For 16089/16089 co-relation queries the response was YES. [2024-11-28 02:54:28,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16377 conditions, 3070 events. 1763/3070 cut-off events. For 16089/16089 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 18080 event pairs, 177 based on Foata normal form. 20/3090 useless extension candidates. Maximal degree in co-relation 16319. Up to 570 conditions per place. [2024-11-28 02:54:28,173 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 243 selfloop transitions, 104 changer transitions 1/349 dead transitions. [2024-11-28 02:54:28,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 349 transitions, 4266 flow [2024-11-28 02:54:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:54:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 02:54:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 273 transitions. [2024-11-28 02:54:28,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-28 02:54:28,174 INFO L175 Difference]: Start difference. First operand has 155 places, 117 transitions, 1585 flow. Second operand 21 states and 273 transitions. [2024-11-28 02:54:28,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 349 transitions, 4266 flow [2024-11-28 02:54:28,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 349 transitions, 4192 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-11-28 02:54:28,220 INFO L231 Difference]: Finished difference. Result has 181 places, 168 transitions, 2631 flow [2024-11-28 02:54:28,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2631, PETRI_PLACES=181, PETRI_TRANSITIONS=168} [2024-11-28 02:54:28,221 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 155 predicate places. [2024-11-28 02:54:28,221 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 168 transitions, 2631 flow [2024-11-28 02:54:28,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 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 02:54:28,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:28,221 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:28,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:28,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-28 02:54:28,422 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:28,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:28,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1867318080, now seen corresponding path program 1 times [2024-11-28 02:54:28,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:28,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810644886] [2024-11-28 02:54:28,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:28,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:28,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:28,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810644886] [2024-11-28 02:54:28,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810644886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:28,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502126199] [2024-11-28 02:54:28,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:28,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:28,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:28,625 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:28,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 02:54:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:28,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:54:28,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:28,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:29,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502126199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:29,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:29,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2024-11-28 02:54:29,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853511022] [2024-11-28 02:54:29,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:29,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:54:29,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:29,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:54:29,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:54:29,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:29,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 168 transitions, 2631 flow. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:29,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:29,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:29,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:29,961 INFO L124 PetriNetUnfolderBase]: 2210/3851 cut-off events. [2024-11-28 02:54:29,961 INFO L125 PetriNetUnfolderBase]: For 34338/34338 co-relation queries the response was YES. [2024-11-28 02:54:29,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23266 conditions, 3851 events. 2210/3851 cut-off events. For 34338/34338 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23258 event pairs, 492 based on Foata normal form. 85/3936 useless extension candidates. Maximal degree in co-relation 23198. Up to 1158 conditions per place. [2024-11-28 02:54:30,007 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 198 selfloop transitions, 55 changer transitions 0/254 dead transitions. [2024-11-28 02:54:30,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 254 transitions, 4286 flow [2024-11-28 02:54:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:54:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 02:54:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 100 transitions. [2024-11-28 02:54:30,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2024-11-28 02:54:30,008 INFO L175 Difference]: Start difference. First operand has 181 places, 168 transitions, 2631 flow. Second operand 12 states and 100 transitions. [2024-11-28 02:54:30,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 254 transitions, 4286 flow [2024-11-28 02:54:30,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 254 transitions, 4022 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-11-28 02:54:30,107 INFO L231 Difference]: Finished difference. Result has 187 places, 168 transitions, 2613 flow [2024-11-28 02:54:30,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2613, PETRI_PLACES=187, PETRI_TRANSITIONS=168} [2024-11-28 02:54:30,108 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 161 predicate places. [2024-11-28 02:54:30,108 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 168 transitions, 2613 flow [2024-11-28 02:54:30,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:30,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:30,108 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:30,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 02:54:30,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-28 02:54:30,308 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:30,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:30,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2103259562, now seen corresponding path program 4 times [2024-11-28 02:54:30,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:30,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012558644] [2024-11-28 02:54:30,309 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:54:30,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:30,320 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:54:30,320 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:30,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012558644] [2024-11-28 02:54:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012558644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:30,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:30,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:54:30,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906558141] [2024-11-28 02:54:30,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:30,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:54:30,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:30,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:54:30,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:54:30,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:30,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 168 transitions, 2613 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:30,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:30,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:30,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:31,385 INFO L124 PetriNetUnfolderBase]: 2375/4165 cut-off events. [2024-11-28 02:54:31,385 INFO L125 PetriNetUnfolderBase]: For 37119/37119 co-relation queries the response was YES. [2024-11-28 02:54:31,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25257 conditions, 4165 events. 2375/4165 cut-off events. For 37119/37119 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 25778 event pairs, 716 based on Foata normal form. 10/4175 useless extension candidates. Maximal degree in co-relation 25190. Up to 1483 conditions per place. [2024-11-28 02:54:31,434 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 210 selfloop transitions, 83 changer transitions 4/298 dead transitions. [2024-11-28 02:54:31,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 298 transitions, 4395 flow [2024-11-28 02:54:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:54:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 02:54:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-11-28 02:54:31,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-11-28 02:54:31,435 INFO L175 Difference]: Start difference. First operand has 187 places, 168 transitions, 2613 flow. Second operand 13 states and 168 transitions. [2024-11-28 02:54:31,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 298 transitions, 4395 flow [2024-11-28 02:54:31,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 298 transitions, 4278 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-28 02:54:31,556 INFO L231 Difference]: Finished difference. Result has 197 places, 188 transitions, 3027 flow [2024-11-28 02:54:31,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3027, PETRI_PLACES=197, PETRI_TRANSITIONS=188} [2024-11-28 02:54:31,557 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 171 predicate places. [2024-11-28 02:54:31,557 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 188 transitions, 3027 flow [2024-11-28 02:54:31,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:31,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:31,557 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:31,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-11-28 02:54:31,557 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:31,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:31,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2059693818, now seen corresponding path program 5 times [2024-11-28 02:54:31,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:31,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618101086] [2024-11-28 02:54:31,558 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:54:31,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:31,571 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:31,571 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:54:31,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:31,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618101086] [2024-11-28 02:54:31,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618101086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:31,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670493679] [2024-11-28 02:54:31,729 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:54:31,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:31,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:31,731 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:31,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 02:54:31,882 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:31,882 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:31,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:54:31,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:32,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:54:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670493679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:32,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:32,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-28 02:54:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159678159] [2024-11-28 02:54:32,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:32,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:54:32,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:32,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:54:32,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:54:32,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:32,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 188 transitions, 3027 flow. Second operand has 24 states, 24 states have (on average 5.416666666666667) internal successors, (130), 24 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:32,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:32,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:32,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:33,413 INFO L124 PetriNetUnfolderBase]: 2323/4058 cut-off events. [2024-11-28 02:54:33,413 INFO L125 PetriNetUnfolderBase]: For 41281/41281 co-relation queries the response was YES. [2024-11-28 02:54:33,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25605 conditions, 4058 events. 2323/4058 cut-off events. For 41281/41281 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24956 event pairs, 502 based on Foata normal form. 54/4112 useless extension candidates. Maximal degree in co-relation 25533. Up to 1080 conditions per place. [2024-11-28 02:54:33,454 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 198 selfloop transitions, 110 changer transitions 0/309 dead transitions. [2024-11-28 02:54:33,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 309 transitions, 5038 flow [2024-11-28 02:54:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:54:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 02:54:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 161 transitions. [2024-11-28 02:54:33,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-11-28 02:54:33,456 INFO L175 Difference]: Start difference. First operand has 197 places, 188 transitions, 3027 flow. Second operand 16 states and 161 transitions. [2024-11-28 02:54:33,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 309 transitions, 5038 flow [2024-11-28 02:54:33,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 309 transitions, 4800 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-11-28 02:54:33,612 INFO L231 Difference]: Finished difference. Result has 202 places, 198 transitions, 3312 flow [2024-11-28 02:54:33,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3312, PETRI_PLACES=202, PETRI_TRANSITIONS=198} [2024-11-28 02:54:33,612 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2024-11-28 02:54:33,613 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 198 transitions, 3312 flow [2024-11-28 02:54:33,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.416666666666667) internal successors, (130), 24 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:33,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:33,613 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:33,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 02:54:33,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:33,813 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:33,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2022588277, now seen corresponding path program 1 times [2024-11-28 02:54:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:33,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798508371] [2024-11-28 02:54:33,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:33,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:54:34,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798508371] [2024-11-28 02:54:34,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798508371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606095099] [2024-11-28 02:54:34,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:34,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:34,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:34,561 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:34,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 02:54:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:34,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:54:34,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:34,910 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:54:34,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 24 [2024-11-28 02:54:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:34,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:35,279 INFO L349 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2024-11-28 02:54:35,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 70 [2024-11-28 02:54:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:35,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606095099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:35,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:35,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 27 [2024-11-28 02:54:35,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701386432] [2024-11-28 02:54:35,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:35,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:54:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:35,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:54:35,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:54:35,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:35,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 198 transitions, 3312 flow. Second operand has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 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 02:54:35,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:35,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:35,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:36,897 INFO L124 PetriNetUnfolderBase]: 2348/4114 cut-off events. [2024-11-28 02:54:36,898 INFO L125 PetriNetUnfolderBase]: For 44061/44061 co-relation queries the response was YES. [2024-11-28 02:54:36,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26221 conditions, 4114 events. 2348/4114 cut-off events. For 44061/44061 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 25725 event pairs, 682 based on Foata normal form. 6/4120 useless extension candidates. Maximal degree in co-relation 26151. Up to 1902 conditions per place. [2024-11-28 02:54:36,924 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 204 selfloop transitions, 78 changer transitions 21/304 dead transitions. [2024-11-28 02:54:36,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 304 transitions, 5111 flow [2024-11-28 02:54:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:54:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 02:54:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 141 transitions. [2024-11-28 02:54:36,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31473214285714285 [2024-11-28 02:54:36,925 INFO L175 Difference]: Start difference. First operand has 202 places, 198 transitions, 3312 flow. Second operand 16 states and 141 transitions. [2024-11-28 02:54:36,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 304 transitions, 5111 flow [2024-11-28 02:54:37,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 304 transitions, 5052 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-11-28 02:54:37,021 INFO L231 Difference]: Finished difference. Result has 215 places, 200 transitions, 3485 flow [2024-11-28 02:54:37,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3485, PETRI_PLACES=215, PETRI_TRANSITIONS=200} [2024-11-28 02:54:37,022 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 189 predicate places. [2024-11-28 02:54:37,022 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 200 transitions, 3485 flow [2024-11-28 02:54:37,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 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 02:54:37,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:37,022 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:37,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 02:54:37,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:37,223 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:37,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:37,223 INFO L85 PathProgramCache]: Analyzing trace with hash 873106037, now seen corresponding path program 2 times [2024-11-28 02:54:37,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:37,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214844340] [2024-11-28 02:54:37,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:54:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:37,253 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:37,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:54:37,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214844340] [2024-11-28 02:54:37,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214844340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761033506] [2024-11-28 02:54:37,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:54:37,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:37,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:37,756 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:37,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 02:54:37,889 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:54:37,889 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:37,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 02:54:37,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:38,234 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:54:38,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-28 02:54:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:54:38,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:38,684 INFO L349 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2024-11-28 02:54:38,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 73 [2024-11-28 02:54:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:38,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761033506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:38,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:38,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 31 [2024-11-28 02:54:38,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378902468] [2024-11-28 02:54:38,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:38,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:54:38,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:38,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:54:38,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:54:38,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:38,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 200 transitions, 3485 flow. Second operand has 31 states, 31 states have (on average 5.193548387096774) internal successors, (161), 31 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:38,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:38,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:38,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:46,581 INFO L124 PetriNetUnfolderBase]: 6253/11014 cut-off events. [2024-11-28 02:54:46,581 INFO L125 PetriNetUnfolderBase]: For 122450/122450 co-relation queries the response was YES. [2024-11-28 02:54:46,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70229 conditions, 11014 events. 6253/11014 cut-off events. For 122450/122450 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 81498 event pairs, 1248 based on Foata normal form. 30/11044 useless extension candidates. Maximal degree in co-relation 70154. Up to 2246 conditions per place. [2024-11-28 02:54:46,686 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 585 selfloop transitions, 351 changer transitions 52/989 dead transitions. [2024-11-28 02:54:46,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 989 transitions, 15465 flow [2024-11-28 02:54:46,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-28 02:54:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2024-11-28 02:54:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 722 transitions. [2024-11-28 02:54:46,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3532289628180039 [2024-11-28 02:54:46,688 INFO L175 Difference]: Start difference. First operand has 215 places, 200 transitions, 3485 flow. Second operand 73 states and 722 transitions. [2024-11-28 02:54:46,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 989 transitions, 15465 flow [2024-11-28 02:54:47,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 989 transitions, 14769 flow, removed 140 selfloop flow, removed 13 redundant places. [2024-11-28 02:54:47,027 INFO L231 Difference]: Finished difference. Result has 314 places, 466 transitions, 8963 flow [2024-11-28 02:54:47,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=8963, PETRI_PLACES=314, PETRI_TRANSITIONS=466} [2024-11-28 02:54:47,027 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 288 predicate places. [2024-11-28 02:54:47,027 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 466 transitions, 8963 flow [2024-11-28 02:54:47,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.193548387096774) internal successors, (161), 31 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:47,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:47,028 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:47,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:47,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2024-11-28 02:54:47,228 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:47,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1864237617, now seen corresponding path program 3 times [2024-11-28 02:54:47,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:47,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707729742] [2024-11-28 02:54:47,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:54:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:47,253 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:54:47,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:47,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707729742] [2024-11-28 02:54:47,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707729742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:47,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591606720] [2024-11-28 02:54:47,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:54:47,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:47,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:47,642 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:47,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 02:54:47,797 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:54:47,797 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:47,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 02:54:47,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:48,093 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:54:48,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-28 02:54:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:54:48,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:48,502 INFO L349 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2024-11-28 02:54:48,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 70 [2024-11-28 02:54:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:48,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591606720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:48,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:48,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 24 [2024-11-28 02:54:48,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817348076] [2024-11-28 02:54:48,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:48,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:54:48,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:48,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:54:48,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:54:48,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:48,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 466 transitions, 8963 flow. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:48,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:48,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:48,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:52,203 INFO L124 PetriNetUnfolderBase]: 6236/10960 cut-off events. [2024-11-28 02:54:52,204 INFO L125 PetriNetUnfolderBase]: For 223982/223982 co-relation queries the response was YES. [2024-11-28 02:54:52,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81306 conditions, 10960 events. 6236/10960 cut-off events. For 223982/223982 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 80923 event pairs, 1180 based on Foata normal form. 4/10964 useless extension candidates. Maximal degree in co-relation 81191. Up to 5810 conditions per place. [2024-11-28 02:54:52,985 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 370 selfloop transitions, 210 changer transitions 11/592 dead transitions. [2024-11-28 02:54:52,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 592 transitions, 12088 flow [2024-11-28 02:54:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:54:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 02:54:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 149 transitions. [2024-11-28 02:54:52,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3325892857142857 [2024-11-28 02:54:52,986 INFO L175 Difference]: Start difference. First operand has 314 places, 466 transitions, 8963 flow. Second operand 16 states and 149 transitions. [2024-11-28 02:54:52,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 592 transitions, 12088 flow [2024-11-28 02:54:54,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 592 transitions, 11007 flow, removed 502 selfloop flow, removed 10 redundant places. [2024-11-28 02:54:54,085 INFO L231 Difference]: Finished difference. Result has 317 places, 472 transitions, 8654 flow [2024-11-28 02:54:54,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8096, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8654, PETRI_PLACES=317, PETRI_TRANSITIONS=472} [2024-11-28 02:54:54,086 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 291 predicate places. [2024-11-28 02:54:54,086 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 472 transitions, 8654 flow [2024-11-28 02:54:54,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:54,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:54:54,087 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:54,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:54,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:54,287 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:54:54,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1675857709, now seen corresponding path program 4 times [2024-11-28 02:54:54,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:54,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446975541] [2024-11-28 02:54:54,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:54:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:54,301 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:54:54,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:54,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:54,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446975541] [2024-11-28 02:54:54,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446975541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:54,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692122340] [2024-11-28 02:54:54,436 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:54:54,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:54,438 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:54,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 02:54:54,580 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:54:54,580 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:54:54,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 02:54:54,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:54,825 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:54:54,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 24 [2024-11-28 02:54:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:54:54,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:55,081 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 02:54:55,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 74 [2024-11-28 02:54:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:54:55,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692122340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:55,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:55,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 9] total 22 [2024-11-28 02:54:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186751599] [2024-11-28 02:54:55,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:55,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:54:55,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:55,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:54:55,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:54:55,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:54:55,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 472 transitions, 8654 flow. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:54:55,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:54:55,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:54:55,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:54:59,977 INFO L124 PetriNetUnfolderBase]: 7060/12534 cut-off events. [2024-11-28 02:54:59,977 INFO L125 PetriNetUnfolderBase]: For 252667/252667 co-relation queries the response was YES. [2024-11-28 02:55:00,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90260 conditions, 12534 events. 7060/12534 cut-off events. For 252667/252667 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 94944 event pairs, 1409 based on Foata normal form. 8/12542 useless extension candidates. Maximal degree in co-relation 90147. Up to 5539 conditions per place. [2024-11-28 02:55:00,154 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 410 selfloop transitions, 266 changer transitions 16/693 dead transitions. [2024-11-28 02:55:00,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 693 transitions, 12977 flow [2024-11-28 02:55:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:55:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:55:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 253 transitions. [2024-11-28 02:55:00,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36142857142857143 [2024-11-28 02:55:00,156 INFO L175 Difference]: Start difference. First operand has 317 places, 472 transitions, 8654 flow. Second operand 25 states and 253 transitions. [2024-11-28 02:55:00,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 693 transitions, 12977 flow [2024-11-28 02:55:01,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 693 transitions, 12588 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-11-28 02:55:01,661 INFO L231 Difference]: Finished difference. Result has 342 places, 527 transitions, 10190 flow [2024-11-28 02:55:01,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8309, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10190, PETRI_PLACES=342, PETRI_TRANSITIONS=527} [2024-11-28 02:55:01,662 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2024-11-28 02:55:01,662 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 527 transitions, 10190 flow [2024-11-28 02:55:01,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:01,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:01,663 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:01,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 02:55:01,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:01,863 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:55:01,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1726947283, now seen corresponding path program 5 times [2024-11-28 02:55:01,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:01,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664471173] [2024-11-28 02:55:01,864 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:55:01,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:01,891 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:01,891 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:55:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:02,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664471173] [2024-11-28 02:55:02,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664471173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:02,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048148901] [2024-11-28 02:55:02,321 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:55:02,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:02,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:02,324 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:02,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 02:55:02,481 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:02,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:02,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:55:02,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:02,631 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:55:02,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 24 [2024-11-28 02:55:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:55:02,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:02,858 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 02:55:02,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 74 [2024-11-28 02:55:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:55:02,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048148901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:02,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:02,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 17 [2024-11-28 02:55:02,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078071809] [2024-11-28 02:55:02,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:02,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:55:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:02,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:55:02,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:55:02,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:55:02,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 527 transitions, 10190 flow. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 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 02:55:02,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:02,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:55:02,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:07,255 INFO L124 PetriNetUnfolderBase]: 6980/12354 cut-off events. [2024-11-28 02:55:07,255 INFO L125 PetriNetUnfolderBase]: For 289135/289135 co-relation queries the response was YES. [2024-11-28 02:55:07,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93547 conditions, 12354 events. 6980/12354 cut-off events. For 289135/289135 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 93031 event pairs, 2427 based on Foata normal form. 6/12360 useless extension candidates. Maximal degree in co-relation 93424. Up to 5557 conditions per place. [2024-11-28 02:55:07,719 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 396 selfloop transitions, 256 changer transitions 14/667 dead transitions. [2024-11-28 02:55:07,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 667 transitions, 13303 flow [2024-11-28 02:55:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:55:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:55:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 204 transitions. [2024-11-28 02:55:07,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-28 02:55:07,721 INFO L175 Difference]: Start difference. First operand has 342 places, 527 transitions, 10190 flow. Second operand 18 states and 204 transitions. [2024-11-28 02:55:07,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 667 transitions, 13303 flow [2024-11-28 02:55:09,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 667 transitions, 12737 flow, removed 159 selfloop flow, removed 12 redundant places. [2024-11-28 02:55:09,888 INFO L231 Difference]: Finished difference. Result has 348 places, 530 transitions, 10278 flow [2024-11-28 02:55:09,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9654, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10278, PETRI_PLACES=348, PETRI_TRANSITIONS=530} [2024-11-28 02:55:09,889 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 322 predicate places. [2024-11-28 02:55:09,889 INFO L471 AbstractCegarLoop]: Abstraction has has 348 places, 530 transitions, 10278 flow [2024-11-28 02:55:09,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 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 02:55:09,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:09,890 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:09,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 02:55:10,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:10,090 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:55:10,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:10,091 INFO L85 PathProgramCache]: Analyzing trace with hash -453009163, now seen corresponding path program 6 times [2024-11-28 02:55:10,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:10,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997652384] [2024-11-28 02:55:10,091 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:55:10,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:10,201 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:55:10,201 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:55:10,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997652384] [2024-11-28 02:55:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997652384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264533461] [2024-11-28 02:55:10,769 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:55:10,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:10,772 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:10,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 02:55:10,928 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:55:10,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:10,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 02:55:10,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:11,283 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:55:11,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-28 02:55:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:55:11,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:11,582 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-28 02:55:11,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 78 [2024-11-28 02:55:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:55:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264533461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:11,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:11,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 9] total 32 [2024-11-28 02:55:11,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763878559] [2024-11-28 02:55:11,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:11,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:55:11,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:11,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:55:11,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:55:11,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:55:11,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 530 transitions, 10278 flow. Second operand has 32 states, 32 states have (on average 5.3125) internal successors, (170), 32 states have internal predecessors, (170), 0 states have call successors, (0), 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 02:55:11,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:11,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:55:11,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:18,116 INFO L124 PetriNetUnfolderBase]: 7950/14191 cut-off events. [2024-11-28 02:55:18,116 INFO L125 PetriNetUnfolderBase]: For 323543/323543 co-relation queries the response was YES. [2024-11-28 02:55:18,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105889 conditions, 14191 events. 7950/14191 cut-off events. For 323543/323543 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 110489 event pairs, 3983 based on Foata normal form. 22/14213 useless extension candidates. Maximal degree in co-relation 105765. Up to 5578 conditions per place. [2024-11-28 02:55:18,358 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 694 selfloop transitions, 192 changer transitions 64/951 dead transitions. [2024-11-28 02:55:18,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 951 transitions, 18567 flow [2024-11-28 02:55:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 02:55:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-28 02:55:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 437 transitions. [2024-11-28 02:55:18,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3392857142857143 [2024-11-28 02:55:18,360 INFO L175 Difference]: Start difference. First operand has 348 places, 530 transitions, 10278 flow. Second operand 46 states and 437 transitions. [2024-11-28 02:55:18,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 951 transitions, 18567 flow [2024-11-28 02:55:20,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 951 transitions, 17787 flow, removed 84 selfloop flow, removed 15 redundant places. [2024-11-28 02:55:20,741 INFO L231 Difference]: Finished difference. Result has 400 places, 612 transitions, 12322 flow [2024-11-28 02:55:20,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9723, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=12322, PETRI_PLACES=400, PETRI_TRANSITIONS=612} [2024-11-28 02:55:20,742 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 374 predicate places. [2024-11-28 02:55:20,742 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 612 transitions, 12322 flow [2024-11-28 02:55:20,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.3125) internal successors, (170), 32 states have internal predecessors, (170), 0 states have call successors, (0), 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 02:55:20,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:20,743 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:20,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 02:55:20,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:20,943 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:55:20,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:20,944 INFO L85 PathProgramCache]: Analyzing trace with hash 583920013, now seen corresponding path program 7 times [2024-11-28 02:55:20,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:20,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960235474] [2024-11-28 02:55:20,944 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:55:20,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:21,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:21,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960235474] [2024-11-28 02:55:21,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960235474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:21,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219992283] [2024-11-28 02:55:21,676 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:55:21,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:21,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:21,678 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:21,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 02:55:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:21,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:55:21,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:21,982 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:55:21,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 24 [2024-11-28 02:55:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:55:22,011 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:55:22,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219992283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:22,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:55:22,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 22 [2024-11-28 02:55:22,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947478070] [2024-11-28 02:55:22,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:22,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:55:22,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:22,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:55:22,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:55:22,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:55:22,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 612 transitions, 12322 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:22,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:22,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:55:22,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:27,647 INFO L124 PetriNetUnfolderBase]: 7758/13801 cut-off events. [2024-11-28 02:55:27,647 INFO L125 PetriNetUnfolderBase]: For 356155/356155 co-relation queries the response was YES. [2024-11-28 02:55:27,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106250 conditions, 13801 events. 7758/13801 cut-off events. For 356155/356155 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 106549 event pairs, 4439 based on Foata normal form. 2/13803 useless extension candidates. Maximal degree in co-relation 106103. Up to 12210 conditions per place. [2024-11-28 02:55:27,913 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 512 selfloop transitions, 130 changer transitions 7/650 dead transitions. [2024-11-28 02:55:27,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 650 transitions, 14086 flow [2024-11-28 02:55:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:55:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:55:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-28 02:55:27,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-28 02:55:27,914 INFO L175 Difference]: Start difference. First operand has 400 places, 612 transitions, 12322 flow. Second operand 9 states and 93 transitions. [2024-11-28 02:55:27,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 650 transitions, 14086 flow [2024-11-28 02:55:31,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 650 transitions, 13446 flow, removed 311 selfloop flow, removed 18 redundant places. [2024-11-28 02:55:31,560 INFO L231 Difference]: Finished difference. Result has 381 places, 618 transitions, 12118 flow [2024-11-28 02:55:31,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=11682, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12118, PETRI_PLACES=381, PETRI_TRANSITIONS=618} [2024-11-28 02:55:31,561 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2024-11-28 02:55:31,561 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 618 transitions, 12118 flow [2024-11-28 02:55:31,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:31,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:31,562 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:31,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 02:55:31,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:31,762 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:55:31,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:31,763 INFO L85 PathProgramCache]: Analyzing trace with hash 457386463, now seen corresponding path program 8 times [2024-11-28 02:55:31,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:31,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436537855] [2024-11-28 02:55:31,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:31,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:31,789 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:31,789 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:55:32,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436537855] [2024-11-28 02:55:32,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436537855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838173988] [2024-11-28 02:55:32,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:32,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:32,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:32,058 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:32,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 02:55:32,225 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:32,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:32,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 02:55:32,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:32,434 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:55:32,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-28 02:55:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:55:32,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:32,755 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-28 02:55:32,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 78 [2024-11-28 02:55:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:55:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838173988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:32,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:32,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 23 [2024-11-28 02:55:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4992690] [2024-11-28 02:55:32,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:32,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:55:32,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:32,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:55:32,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:55:32,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:55:32,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 618 transitions, 12118 flow. Second operand has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:32,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:32,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:55:32,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:39,012 INFO L124 PetriNetUnfolderBase]: 8226/14705 cut-off events. [2024-11-28 02:55:39,013 INFO L125 PetriNetUnfolderBase]: For 325690/325690 co-relation queries the response was YES. [2024-11-28 02:55:39,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107973 conditions, 14705 events. 8226/14705 cut-off events. For 325690/325690 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 115182 event pairs, 2281 based on Foata normal form. 6/14711 useless extension candidates. Maximal degree in co-relation 107833. Up to 11476 conditions per place. [2024-11-28 02:55:39,329 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 582 selfloop transitions, 204 changer transitions 16/803 dead transitions. [2024-11-28 02:55:39,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 803 transitions, 16457 flow [2024-11-28 02:55:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:55:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 02:55:39,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2024-11-28 02:55:39,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3520408163265306 [2024-11-28 02:55:39,331 INFO L175 Difference]: Start difference. First operand has 381 places, 618 transitions, 12118 flow. Second operand 21 states and 207 transitions. [2024-11-28 02:55:39,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 803 transitions, 16457 flow [2024-11-28 02:55:42,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 803 transitions, 16137 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-11-28 02:55:42,370 INFO L231 Difference]: Finished difference. Result has 402 places, 663 transitions, 13365 flow [2024-11-28 02:55:42,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=11818, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13365, PETRI_PLACES=402, PETRI_TRANSITIONS=663} [2024-11-28 02:55:42,371 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 376 predicate places. [2024-11-28 02:55:42,371 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 663 transitions, 13365 flow [2024-11-28 02:55:42,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:42,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:42,371 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:42,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-28 02:55:42,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:42,572 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:55:42,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1131830253, now seen corresponding path program 9 times [2024-11-28 02:55:42,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:42,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990133804] [2024-11-28 02:55:42,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:42,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:42,599 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:55:42,599 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:55:43,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:43,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990133804] [2024-11-28 02:55:43,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990133804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:43,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12405235] [2024-11-28 02:55:43,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:43,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:43,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:43,161 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:43,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 02:55:43,323 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:55:43,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:43,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 02:55:43,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:43,672 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:55:43,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-28 02:55:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:55:43,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:44,148 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-28 02:55:44,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 78 [2024-11-28 02:55:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:55:44,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12405235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:44,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:44,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 9] total 32 [2024-11-28 02:55:44,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031033981] [2024-11-28 02:55:44,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:44,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:55:44,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:44,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:55:44,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:55:44,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:55:44,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 663 transitions, 13365 flow. Second operand has 32 states, 32 states have (on average 5.3125) internal successors, (170), 32 states have internal predecessors, (170), 0 states have call successors, (0), 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 02:55:44,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:44,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:55:44,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:53,990 INFO L124 PetriNetUnfolderBase]: 9265/16628 cut-off events. [2024-11-28 02:55:53,990 INFO L125 PetriNetUnfolderBase]: For 406918/406918 co-relation queries the response was YES. [2024-11-28 02:55:54,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124295 conditions, 16628 events. 9265/16628 cut-off events. For 406918/406918 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 132925 event pairs, 4014 based on Foata normal form. 45/16673 useless extension candidates. Maximal degree in co-relation 124148. Up to 5564 conditions per place. [2024-11-28 02:55:54,370 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 759 selfloop transitions, 348 changer transitions 65/1173 dead transitions. [2024-11-28 02:55:54,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1173 transitions, 23155 flow [2024-11-28 02:55:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 02:55:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2024-11-28 02:55:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 621 transitions. [2024-11-28 02:55:54,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3577188940092166 [2024-11-28 02:55:54,373 INFO L175 Difference]: Start difference. First operand has 402 places, 663 transitions, 13365 flow. Second operand 62 states and 621 transitions. [2024-11-28 02:55:54,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1173 transitions, 23155 flow [2024-11-28 02:55:58,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1173 transitions, 22851 flow, removed 116 selfloop flow, removed 10 redundant places. [2024-11-28 02:55:58,120 INFO L231 Difference]: Finished difference. Result has 479 places, 780 transitions, 17374 flow [2024-11-28 02:55:58,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13246, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=17374, PETRI_PLACES=479, PETRI_TRANSITIONS=780} [2024-11-28 02:55:58,121 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 453 predicate places. [2024-11-28 02:55:58,121 INFO L471 AbstractCegarLoop]: Abstraction has has 479 places, 780 transitions, 17374 flow [2024-11-28 02:55:58,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.3125) internal successors, (170), 32 states have internal predecessors, (170), 0 states have call successors, (0), 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 02:55:58,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:58,122 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:58,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 02:55:58,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-28 02:55:58,323 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:55:58,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:58,323 INFO L85 PathProgramCache]: Analyzing trace with hash -636121437, now seen corresponding path program 10 times [2024-11-28 02:55:58,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:58,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027153938] [2024-11-28 02:55:58,323 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:55:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:58,341 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:55:58,341 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:55:58,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027153938] [2024-11-28 02:55:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027153938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374440235] [2024-11-28 02:55:58,503 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:55:58,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:58,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:58,505 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:58,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 02:55:58,676 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:55:58,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:58,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 02:55:58,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:58,954 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:55:58,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 24 [2024-11-28 02:55:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:55:58,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:59,306 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2024-11-28 02:55:59,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 78 [2024-11-28 02:55:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:55:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374440235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:59,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:59,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 9] total 22 [2024-11-28 02:55:59,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269696677] [2024-11-28 02:55:59,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:59,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:55:59,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:59,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:55:59,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:55:59,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:55:59,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 780 transitions, 17374 flow. Second operand has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:59,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:59,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:55:59,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:07,819 INFO L124 PetriNetUnfolderBase]: 10057/18034 cut-off events. [2024-11-28 02:56:07,819 INFO L125 PetriNetUnfolderBase]: For 550591/550591 co-relation queries the response was YES. [2024-11-28 02:56:08,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143737 conditions, 18034 events. 10057/18034 cut-off events. For 550591/550591 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 146506 event pairs, 2806 based on Foata normal form. 4/18038 useless extension candidates. Maximal degree in co-relation 143564. Up to 14466 conditions per place. [2024-11-28 02:56:08,316 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 769 selfloop transitions, 190 changer transitions 12/972 dead transitions. [2024-11-28 02:56:08,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 972 transitions, 22856 flow [2024-11-28 02:56:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:56:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 02:56:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 208 transitions. [2024-11-28 02:56:08,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-11-28 02:56:08,320 INFO L175 Difference]: Start difference. First operand has 479 places, 780 transitions, 17374 flow. Second operand 22 states and 208 transitions. [2024-11-28 02:56:08,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 972 transitions, 22856 flow [2024-11-28 02:56:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 972 transitions, 21133 flow, removed 693 selfloop flow, removed 32 redundant places. [2024-11-28 02:56:13,804 INFO L231 Difference]: Finished difference. Result has 471 places, 868 transitions, 18467 flow [2024-11-28 02:56:13,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=15799, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=18467, PETRI_PLACES=471, PETRI_TRANSITIONS=868} [2024-11-28 02:56:13,805 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 445 predicate places. [2024-11-28 02:56:13,805 INFO L471 AbstractCegarLoop]: Abstraction has has 471 places, 868 transitions, 18467 flow [2024-11-28 02:56:13,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:13,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:13,806 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:13,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-28 02:56:14,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-28 02:56:14,006 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:56:14,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:14,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1785748849, now seen corresponding path program 11 times [2024-11-28 02:56:14,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:14,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374769166] [2024-11-28 02:56:14,007 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:56:14,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:14,024 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:14,024 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:56:14,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374769166] [2024-11-28 02:56:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374769166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603390121] [2024-11-28 02:56:14,317 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:56:14,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:14,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:14,319 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:14,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 02:56:14,469 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:14,469 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:14,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:56:14,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:14,591 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 02:56:14,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 24 [2024-11-28 02:56:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:56:14,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:14,819 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 02:56:14,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 74 [2024-11-28 02:56:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:56:14,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603390121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:14,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2024-11-28 02:56:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474963431] [2024-11-28 02:56:14,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:14,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:56:14,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:14,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:56:14,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:56:14,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:56:14,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 868 transitions, 18467 flow. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 02:56:14,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:14,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:56:14,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:24,309 INFO L124 PetriNetUnfolderBase]: 11135/20086 cut-off events. [2024-11-28 02:56:24,309 INFO L125 PetriNetUnfolderBase]: For 538863/538863 co-relation queries the response was YES. [2024-11-28 02:56:24,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154465 conditions, 20086 events. 11135/20086 cut-off events. For 538863/538863 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 167325 event pairs, 3311 based on Foata normal form. 4/20090 useless extension candidates. Maximal degree in co-relation 154289. Up to 15950 conditions per place. [2024-11-28 02:56:24,832 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 864 selfloop transitions, 193 changer transitions 14/1072 dead transitions. [2024-11-28 02:56:24,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 1072 transitions, 24338 flow [2024-11-28 02:56:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:56:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 02:56:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 228 transitions. [2024-11-28 02:56:24,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35403726708074534 [2024-11-28 02:56:24,833 INFO L175 Difference]: Start difference. First operand has 471 places, 868 transitions, 18467 flow. Second operand 23 states and 228 transitions. [2024-11-28 02:56:24,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 1072 transitions, 24338 flow [2024-11-28 02:56:29,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1072 transitions, 23616 flow, removed 340 selfloop flow, removed 8 redundant places. [2024-11-28 02:56:30,006 INFO L231 Difference]: Finished difference. Result has 497 places, 944 transitions, 20447 flow [2024-11-28 02:56:30,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=17759, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=20447, PETRI_PLACES=497, PETRI_TRANSITIONS=944} [2024-11-28 02:56:30,007 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 471 predicate places. [2024-11-28 02:56:30,007 INFO L471 AbstractCegarLoop]: Abstraction has has 497 places, 944 transitions, 20447 flow [2024-11-28 02:56:30,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 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 02:56:30,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:30,007 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:30,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-28 02:56:30,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:30,207 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:56:30,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash 747482549, now seen corresponding path program 12 times [2024-11-28 02:56:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:30,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664378852] [2024-11-28 02:56:30,208 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:56:30,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:30,234 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:56:30,234 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:56:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664378852] [2024-11-28 02:56:30,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664378852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686136959] [2024-11-28 02:56:30,641 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:56:30,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:30,643 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:30,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da96f40-1931-4378-b3a8-a7c129973bc0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 02:56:30,796 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:56:30,796 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:30,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 02:56:30,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:31,099 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:56:31,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-28 02:56:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:56:31,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:31,451 INFO L349 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2024-11-28 02:56:31,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 70 [2024-11-28 02:56:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:56:31,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686136959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:31,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:31,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 9] total 31 [2024-11-28 02:56:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055162168] [2024-11-28 02:56:31,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:31,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:56:31,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:31,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:56:31,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:56:31,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-28 02:56:31,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 944 transitions, 20447 flow. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 02:56:31,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:31,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-28 02:56:31,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand