./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-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_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/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_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/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_0e9163cf-df85-499b-a048-bb510438fb40/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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:22:02,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:22:02,279 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:22:02,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:22:02,289 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:22:02,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:22:02,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:22:02,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:22:02,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:22:02,314 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:22:02,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:22:02,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:22:02,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:22:02,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:22:02,315 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:22:02,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:22:02,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:22:02,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:22:02,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:22:02,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:22:02,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:22:02,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:22:02,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:22:02,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:22:02,317 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:22:02,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:22:02,317 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:22:02,317 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:22:02,317 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:22:02,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:22:02,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:22:02,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:22:02,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:02,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:22:02,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:22:02,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:22:02,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:22:02,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:02,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:22:02,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:22:02,319 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:22:02,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:22:02,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:22:02,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:22:02,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:22:02,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:22:02,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:22:02,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:22:02,320 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_0e9163cf-df85-499b-a048-bb510438fb40/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 -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-11-27 20:22:02,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:22:02,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:22:02,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:22:02,654 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:22:02,654 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:22:02,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-27 20:22:06,415 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/data/73b103acd/04ece8fb506946bf9279938e414fc5a3/FLAGa7c45fad1 [2024-11-27 20:22:06,740 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:22:06,741 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-27 20:22:06,752 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/data/73b103acd/04ece8fb506946bf9279938e414fc5a3/FLAGa7c45fad1 [2024-11-27 20:22:06,776 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/data/73b103acd/04ece8fb506946bf9279938e414fc5a3 [2024-11-27 20:22:06,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:22:06,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:22:06,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:22:06,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:22:06,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:22:06,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:22:06" (1/1) ... [2024-11-27 20:22:06,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395583bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:06, skipping insertion in model container [2024-11-27 20:22:06,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:22:06" (1/1) ... [2024-11-27 20:22:06,818 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:22:07,121 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_0e9163cf-df85-499b-a048-bb510438fb40/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-27 20:22:07,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:22:07,161 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:22:07,206 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_0e9163cf-df85-499b-a048-bb510438fb40/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-27 20:22:07,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:22:07,243 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:22:07,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07 WrapperNode [2024-11-27 20:22:07,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:22:07,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:22:07,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:22:07,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:22:07,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,324 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 165 [2024-11-27 20:22:07,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:22:07,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:22:07,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:22:07,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:22:07,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,390 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]. [2024-11-27 20:22:07,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,412 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:22:07,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:22:07,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:22:07,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:22:07,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (1/1) ... [2024-11-27 20:22:07,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:07,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:22:07,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:22:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:22:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:22:07,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:22:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:22:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:22:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:22:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:22:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:22:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:22:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:22:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:22:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:22:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:22:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:22:07,552 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:22:07,727 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:22:07,730 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:22:08,175 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:22:08,178 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:22:08,601 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:22:08,601 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:22:08,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:22:08 BoogieIcfgContainer [2024-11-27 20:22:08,606 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:22:08,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:22:08,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:22:08,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:22:08,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:22:06" (1/3) ... [2024-11-27 20:22:08,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d69332b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:22:08, skipping insertion in model container [2024-11-27 20:22:08,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:07" (2/3) ... [2024-11-27 20:22:08,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d69332b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:22:08, skipping insertion in model container [2024-11-27 20:22:08,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:22:08" (3/3) ... [2024-11-27 20:22:08,620 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-11-27 20:22:08,639 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:22:08,641 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-opt-symm.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-27 20:22:08,641 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:22:08,719 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 20:22:08,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-11-27 20:22:08,831 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-27 20:22:08,836 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:22:08,841 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 4. Compared 29 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. [2024-11-27 20:22:08,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-11-27 20:22:08,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-11-27 20:22:08,867 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:22:08,889 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;@12c9c453, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:22:08,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-27 20:22:08,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:22:08,910 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-11-27 20:22:08,910 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:22:08,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:08,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:08,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:08,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:08,921 INFO L85 PathProgramCache]: Analyzing trace with hash -390798447, now seen corresponding path program 1 times [2024-11-27 20:22:08,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:08,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619159478] [2024-11-27 20:22:08,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:09,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:09,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619159478] [2024-11-27 20:22:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619159478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:09,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:09,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:22:09,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282981632] [2024-11-27 20:22:09,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:09,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:09,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:09,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:09,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:09,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:09,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:09,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:09,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:09,805 INFO L124 PetriNetUnfolderBase]: 237/396 cut-off events. [2024-11-27 20:22:09,806 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-27 20:22:09,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 396 events. 237/396 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1440 event pairs, 68 based on Foata normal form. 5/301 useless extension candidates. Maximal degree in co-relation 720. Up to 183 conditions per place. [2024-11-27 20:22:09,814 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 46 selfloop transitions, 5 changer transitions 2/54 dead transitions. [2024-11-27 20:22:09,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 244 flow [2024-11-27 20:22:09,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:22:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:22:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-27 20:22:09,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-27 20:22:09,840 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 5 states and 69 transitions. [2024-11-27 20:22:09,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 244 flow [2024-11-27 20:22:09,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:22:09,851 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 78 flow [2024-11-27 20:22:09,854 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2024-11-27 20:22:09,859 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2024-11-27 20:22:09,860 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 78 flow [2024-11-27 20:22:09,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:09,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:09,861 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:09,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:22:09,862 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:09,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash -638126291, now seen corresponding path program 2 times [2024-11-27 20:22:09,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676450488] [2024-11-27 20:22:09,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:22:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:09,914 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:22:09,918 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:10,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:10,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676450488] [2024-11-27 20:22:10,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676450488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:10,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:10,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:22:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786319670] [2024-11-27 20:22:10,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:10,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:10,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:10,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:10,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:10,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:10,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:10,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:10,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:10,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:10,319 INFO L124 PetriNetUnfolderBase]: 461/788 cut-off events. [2024-11-27 20:22:10,319 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-27 20:22:10,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 788 events. 461/788 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3344 event pairs, 176 based on Foata normal form. 4/691 useless extension candidates. Maximal degree in co-relation 614. Up to 395 conditions per place. [2024-11-27 20:22:10,329 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 50 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-11-27 20:22:10,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 56 transitions, 275 flow [2024-11-27 20:22:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:22:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:22:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-11-27 20:22:10,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-27 20:22:10,333 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 78 flow. Second operand 5 states and 65 transitions. [2024-11-27 20:22:10,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 56 transitions, 275 flow [2024-11-27 20:22:10,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 56 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:22:10,335 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 96 flow [2024-11-27 20:22:10,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-27 20:22:10,338 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2024-11-27 20:22:10,338 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 96 flow [2024-11-27 20:22:10,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:10,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:10,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:10,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:22:10,339 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:10,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:10,340 INFO L85 PathProgramCache]: Analyzing trace with hash 284563489, now seen corresponding path program 3 times [2024-11-27 20:22:10,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:10,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519691524] [2024-11-27 20:22:10,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:22:10,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:10,376 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:22:10,377 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:10,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519691524] [2024-11-27 20:22:10,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519691524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:10,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:10,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:22:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010810970] [2024-11-27 20:22:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:10,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:10,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:10,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:10,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:10,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:10,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:10,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:10,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:10,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:10,773 INFO L124 PetriNetUnfolderBase]: 601/1029 cut-off events. [2024-11-27 20:22:10,773 INFO L125 PetriNetUnfolderBase]: For 457/457 co-relation queries the response was YES. [2024-11-27 20:22:10,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 1029 events. 601/1029 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4721 event pairs, 207 based on Foata normal form. 23/1051 useless extension candidates. Maximal degree in co-relation 885. Up to 766 conditions per place. [2024-11-27 20:22:10,783 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 45 selfloop transitions, 4 changer transitions 2/52 dead transitions. [2024-11-27 20:22:10,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 273 flow [2024-11-27 20:22:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:22:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:22:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-27 20:22:10,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-11-27 20:22:10,788 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 96 flow. Second operand 4 states and 58 transitions. [2024-11-27 20:22:10,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 273 flow [2024-11-27 20:22:10,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:22:10,793 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 134 flow [2024-11-27 20:22:10,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-27 20:22:10,795 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-11-27 20:22:10,795 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 134 flow [2024-11-27 20:22:10,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:10,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:10,795 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:10,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:22:10,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:10,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 103773553, now seen corresponding path program 4 times [2024-11-27 20:22:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:10,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684030777] [2024-11-27 20:22:10,796 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:22:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:10,820 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:22:10,821 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:10,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:10,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684030777] [2024-11-27 20:22:10,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684030777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:10,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:10,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:22:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016629367] [2024-11-27 20:22:10,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:10,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:10,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:10,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:10,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:10,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:10,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:10,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:10,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:11,158 INFO L124 PetriNetUnfolderBase]: 620/1051 cut-off events. [2024-11-27 20:22:11,159 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2024-11-27 20:22:11,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1051 events. 620/1051 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4726 event pairs, 254 based on Foata normal form. 20/1069 useless extension candidates. Maximal degree in co-relation 1537. Up to 778 conditions per place. [2024-11-27 20:22:11,166 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 47 selfloop transitions, 6 changer transitions 3/57 dead transitions. [2024-11-27 20:22:11,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 336 flow [2024-11-27 20:22:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:22:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:22:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-27 20:22:11,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-27 20:22:11,169 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 134 flow. Second operand 4 states and 59 transitions. [2024-11-27 20:22:11,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 336 flow [2024-11-27 20:22:11,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:22:11,176 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 194 flow [2024-11-27 20:22:11,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-27 20:22:11,177 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-27 20:22:11,178 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 194 flow [2024-11-27 20:22:11,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:11,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:11,180 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:11,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:22:11,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:11,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:11,181 INFO L85 PathProgramCache]: Analyzing trace with hash 251531022, now seen corresponding path program 1 times [2024-11-27 20:22:11,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:11,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538773303] [2024-11-27 20:22:11,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:11,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:11,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:11,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538773303] [2024-11-27 20:22:11,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538773303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:11,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:11,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:22:11,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85559883] [2024-11-27 20:22:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:11,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:11,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:11,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:11,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:11,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:11,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:11,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:11,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:11,608 INFO L124 PetriNetUnfolderBase]: 559/944 cut-off events. [2024-11-27 20:22:11,609 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2024-11-27 20:22:11,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 944 events. 559/944 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4260 event pairs, 183 based on Foata normal form. 16/958 useless extension candidates. Maximal degree in co-relation 937. Up to 479 conditions per place. [2024-11-27 20:22:11,617 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 56 selfloop transitions, 8 changer transitions 3/68 dead transitions. [2024-11-27 20:22:11,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 447 flow [2024-11-27 20:22:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:22:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:22:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-27 20:22:11,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-27 20:22:11,618 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 194 flow. Second operand 4 states and 66 transitions. [2024-11-27 20:22:11,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 447 flow [2024-11-27 20:22:11,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 441 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-27 20:22:11,628 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 210 flow [2024-11-27 20:22:11,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-27 20:22:11,629 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-27 20:22:11,629 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 210 flow [2024-11-27 20:22:11,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:11,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:11,630 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:11,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:22:11,630 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:11,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash -32405608, now seen corresponding path program 1 times [2024-11-27 20:22:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:11,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706526844] [2024-11-27 20:22:11,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:11,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:11,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706526844] [2024-11-27 20:22:11,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706526844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:11,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:11,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:22:11,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097988731] [2024-11-27 20:22:11,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:11,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:11,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:11,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:11,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:11,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:11,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:11,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:11,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:11,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:12,009 INFO L124 PetriNetUnfolderBase]: 497/831 cut-off events. [2024-11-27 20:22:12,009 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2024-11-27 20:22:12,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 831 events. 497/831 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3429 event pairs, 183 based on Foata normal form. 18/847 useless extension candidates. Maximal degree in co-relation 2284. Up to 441 conditions per place. [2024-11-27 20:22:12,019 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 52 selfloop transitions, 8 changer transitions 2/63 dead transitions. [2024-11-27 20:22:12,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 447 flow [2024-11-27 20:22:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:22:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:22:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-27 20:22:12,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-27 20:22:12,021 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 210 flow. Second operand 4 states and 62 transitions. [2024-11-27 20:22:12,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 447 flow [2024-11-27 20:22:12,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 421 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-27 20:22:12,028 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 214 flow [2024-11-27 20:22:12,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-27 20:22:12,029 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-27 20:22:12,030 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 214 flow [2024-11-27 20:22:12,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:12,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:12,030 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:12,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:22:12,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:12,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:12,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1701400911, now seen corresponding path program 1 times [2024-11-27 20:22:12,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081879465] [2024-11-27 20:22:12,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:12,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:12,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:12,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081879465] [2024-11-27 20:22:12,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081879465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:12,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:12,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:22:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801216746] [2024-11-27 20:22:12,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:12,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:22:12,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:12,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:22:12,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:22:12,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:12,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:12,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:12,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:12,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:12,311 INFO L124 PetriNetUnfolderBase]: 495/827 cut-off events. [2024-11-27 20:22:12,311 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2024-11-27 20:22:12,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 827 events. 495/827 cut-off events. For 1302/1302 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3401 event pairs, 332 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 1642. Up to 819 conditions per place. [2024-11-27 20:22:12,334 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-11-27 20:22:12,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 294 flow [2024-11-27 20:22:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:22:12,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:22:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-11-27 20:22:12,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-27 20:22:12,335 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 214 flow. Second operand 3 states and 37 transitions. [2024-11-27 20:22:12,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 294 flow [2024-11-27 20:22:12,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 282 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-27 20:22:12,339 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 224 flow [2024-11-27 20:22:12,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-27 20:22:12,340 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-11-27 20:22:12,340 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 224 flow [2024-11-27 20:22:12,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:12,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:12,340 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] [2024-11-27 20:22:12,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:22:12,341 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:12,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1580328509, now seen corresponding path program 1 times [2024-11-27 20:22:12,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:12,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38153108] [2024-11-27 20:22:12,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:12,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:22:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38153108] [2024-11-27 20:22:12,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38153108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:22:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693031475] [2024-11-27 20:22:12,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:12,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:22:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:12,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:22:12,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:22:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:12,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:22:12,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:22:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:22:12,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:22:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:22:12,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693031475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:22:12,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:22:12,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-27 20:22:12,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593205922] [2024-11-27 20:22:12,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:22:12,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:22:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:12,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:22:12,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:22:12,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:12,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2024-11-27 20:22:12,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:12,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:12,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:12,908 INFO L124 PetriNetUnfolderBase]: 495/833 cut-off events. [2024-11-27 20:22:12,908 INFO L125 PetriNetUnfolderBase]: For 1079/1079 co-relation queries the response was YES. [2024-11-27 20:22:12,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 833 events. 495/833 cut-off events. For 1079/1079 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3398 event pairs, 332 based on Foata normal form. 3/835 useless extension candidates. Maximal degree in co-relation 2434. Up to 819 conditions per place. [2024-11-27 20:22:12,914 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-11-27 20:22:12,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 336 flow [2024-11-27 20:22:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:22:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:22:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-11-27 20:22:12,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-27 20:22:12,916 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 224 flow. Second operand 6 states and 56 transitions. [2024-11-27 20:22:12,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 336 flow [2024-11-27 20:22:12,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:22:12,921 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 286 flow [2024-11-27 20:22:12,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-27 20:22:12,923 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-27 20:22:12,925 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 286 flow [2024-11-27 20:22:12,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2024-11-27 20:22:12,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:12,925 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:12,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:22:13,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:22:13,126 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:13,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:13,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1262343183, now seen corresponding path program 2 times [2024-11-27 20:22:13,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:13,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051983923] [2024-11-27 20:22:13,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:22:13,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:13,208 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:22:13,208 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 20:22:14,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:14,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051983923] [2024-11-27 20:22:14,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051983923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:14,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:14,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:14,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449020025] [2024-11-27 20:22:14,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:14,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:14,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:14,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:14,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:14,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:14,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 286 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:14,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:14,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:14,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:16,383 INFO L124 PetriNetUnfolderBase]: 681/1211 cut-off events. [2024-11-27 20:22:16,383 INFO L125 PetriNetUnfolderBase]: For 1493/1493 co-relation queries the response was YES. [2024-11-27 20:22:16,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1211 events. 681/1211 cut-off events. For 1493/1493 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5982 event pairs, 42 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 3414. Up to 223 conditions per place. [2024-11-27 20:22:16,394 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 113 selfloop transitions, 62 changer transitions 7/183 dead transitions. [2024-11-27 20:22:16,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 183 transitions, 1212 flow [2024-11-27 20:22:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:22:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-27 20:22:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 210 transitions. [2024-11-27 20:22:16,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-27 20:22:16,397 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 286 flow. Second operand 21 states and 210 transitions. [2024-11-27 20:22:16,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 183 transitions, 1212 flow [2024-11-27 20:22:16,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 183 transitions, 1196 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-27 20:22:16,405 INFO L231 Difference]: Finished difference. Result has 80 places, 94 transitions, 745 flow [2024-11-27 20:22:16,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=745, PETRI_PLACES=80, PETRI_TRANSITIONS=94} [2024-11-27 20:22:16,407 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2024-11-27 20:22:16,407 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 94 transitions, 745 flow [2024-11-27 20:22:16,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:16,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:16,408 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:16,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:22:16,408 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:16,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash 305996023, now seen corresponding path program 3 times [2024-11-27 20:22:16,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:16,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155546140] [2024-11-27 20:22:16,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:22:16,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:16,459 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:22:16,459 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 20:22:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155546140] [2024-11-27 20:22:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155546140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:17,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:17,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6956834] [2024-11-27 20:22:17,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:17,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:17,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:17,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:17,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:17,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 94 transitions, 745 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:17,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:17,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:17,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:20,216 INFO L124 PetriNetUnfolderBase]: 1246/2227 cut-off events. [2024-11-27 20:22:20,217 INFO L125 PetriNetUnfolderBase]: For 6163/6163 co-relation queries the response was YES. [2024-11-27 20:22:20,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7801 conditions, 2227 events. 1246/2227 cut-off events. For 6163/6163 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12801 event pairs, 63 based on Foata normal form. 1/2227 useless extension candidates. Maximal degree in co-relation 7727. Up to 370 conditions per place. [2024-11-27 20:22:20,234 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 177 selfloop transitions, 117 changer transitions 8/303 dead transitions. [2024-11-27 20:22:20,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 303 transitions, 2409 flow [2024-11-27 20:22:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 20:22:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-27 20:22:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 350 transitions. [2024-11-27 20:22:20,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-11-27 20:22:20,240 INFO L175 Difference]: Start difference. First operand has 80 places, 94 transitions, 745 flow. Second operand 33 states and 350 transitions. [2024-11-27 20:22:20,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 303 transitions, 2409 flow [2024-11-27 20:22:20,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 303 transitions, 2265 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-11-27 20:22:20,305 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1498 flow [2024-11-27 20:22:20,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1498, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2024-11-27 20:22:20,307 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-27 20:22:20,308 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1498 flow [2024-11-27 20:22:20,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:20,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:20,309 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:20,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:22:20,309 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:20,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1632262309, now seen corresponding path program 4 times [2024-11-27 20:22:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:20,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799945661] [2024-11-27 20:22:20,311 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:22:20,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:20,354 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:22:20,355 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 20:22:20,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:20,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799945661] [2024-11-27 20:22:20,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799945661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:20,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:20,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:22:20,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709538523] [2024-11-27 20:22:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:20,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:22:20,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:20,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:22:20,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:22:20,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:20,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 1498 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2024-11-27 20:22:20,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:20,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:20,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:22,571 INFO L124 PetriNetUnfolderBase]: 1371/2449 cut-off events. [2024-11-27 20:22:22,573 INFO L125 PetriNetUnfolderBase]: For 9477/9477 co-relation queries the response was YES. [2024-11-27 20:22:22,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9490 conditions, 2449 events. 1371/2449 cut-off events. For 9477/9477 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14346 event pairs, 132 based on Foata normal form. 1/2449 useless extension candidates. Maximal degree in co-relation 9406. Up to 448 conditions per place. [2024-11-27 20:22:22,599 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 156 selfloop transitions, 93 changer transitions 8/258 dead transitions. [2024-11-27 20:22:22,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 258 transitions, 2569 flow [2024-11-27 20:22:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:22:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 20:22:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 207 transitions. [2024-11-27 20:22:22,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43487394957983194 [2024-11-27 20:22:22,601 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1498 flow. Second operand 17 states and 207 transitions. [2024-11-27 20:22:22,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 258 transitions, 2569 flow [2024-11-27 20:22:22,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 258 transitions, 2369 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-11-27 20:22:22,680 INFO L231 Difference]: Finished difference. Result has 129 places, 166 transitions, 1674 flow [2024-11-27 20:22:22,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1674, PETRI_PLACES=129, PETRI_TRANSITIONS=166} [2024-11-27 20:22:22,683 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 103 predicate places. [2024-11-27 20:22:22,683 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 166 transitions, 1674 flow [2024-11-27 20:22:22,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2024-11-27 20:22:22,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:22,683 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:22,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:22:22,684 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:22,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:22,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1080011989, now seen corresponding path program 5 times [2024-11-27 20:22:22,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:22,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137247490] [2024-11-27 20:22:22,685 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:22:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:22,738 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:22:22,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:22:22,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137247490] [2024-11-27 20:22:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137247490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:22:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801133396] [2024-11-27 20:22:22,904 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:22:22,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:22:22,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:22,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:22:22,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:22:23,078 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:22:23,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:23,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:22:23,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:22:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:22:23,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:22:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:22:23,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801133396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:22:23,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:22:23,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-27 20:22:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426884512] [2024-11-27 20:22:23,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:22:23,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:22:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:23,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:22:23,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:22:23,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:23,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 166 transitions, 1674 flow. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:23,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:23,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:23,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:23,766 INFO L124 PetriNetUnfolderBase]: 1361/2430 cut-off events. [2024-11-27 20:22:23,766 INFO L125 PetriNetUnfolderBase]: For 9968/9968 co-relation queries the response was YES. [2024-11-27 20:22:23,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9980 conditions, 2430 events. 1361/2430 cut-off events. For 9968/9968 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14164 event pairs, 864 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 9885. Up to 2391 conditions per place. [2024-11-27 20:22:23,796 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 155 selfloop transitions, 12 changer transitions 0/168 dead transitions. [2024-11-27 20:22:23,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 168 transitions, 2020 flow [2024-11-27 20:22:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:22:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:22:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2024-11-27 20:22:23,798 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29081632653061223 [2024-11-27 20:22:23,798 INFO L175 Difference]: Start difference. First operand has 129 places, 166 transitions, 1674 flow. Second operand 7 states and 57 transitions. [2024-11-27 20:22:23,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 168 transitions, 2020 flow [2024-11-27 20:22:23,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 168 transitions, 1894 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-11-27 20:22:23,860 INFO L231 Difference]: Finished difference. Result has 125 places, 168 transitions, 1594 flow [2024-11-27 20:22:23,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1594, PETRI_PLACES=125, PETRI_TRANSITIONS=168} [2024-11-27 20:22:23,863 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2024-11-27 20:22:23,865 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 168 transitions, 1594 flow [2024-11-27 20:22:23,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:23,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:23,866 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:23,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:22:24,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:22:24,070 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:24,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:24,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1938885383, now seen corresponding path program 6 times [2024-11-27 20:22:24,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:24,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359622072] [2024-11-27 20:22:24,071 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:22:24,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:24,101 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:22:24,101 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:24,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:24,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359622072] [2024-11-27 20:22:24,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359622072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:24,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:24,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:24,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300953054] [2024-11-27 20:22:24,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:24,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:24,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:24,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:24,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:24,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:24,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 168 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:24,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:24,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:24,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:26,652 INFO L124 PetriNetUnfolderBase]: 1391/2482 cut-off events. [2024-11-27 20:22:26,652 INFO L125 PetriNetUnfolderBase]: For 8220/8220 co-relation queries the response was YES. [2024-11-27 20:22:26,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9576 conditions, 2482 events. 1391/2482 cut-off events. For 8220/8220 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14523 event pairs, 77 based on Foata normal form. 1/2483 useless extension candidates. Maximal degree in co-relation 9472. Up to 444 conditions per place. [2024-11-27 20:22:26,674 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 151 selfloop transitions, 128 changer transitions 7/287 dead transitions. [2024-11-27 20:22:26,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 287 transitions, 2696 flow [2024-11-27 20:22:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:22:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-27 20:22:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2024-11-27 20:22:26,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3637566137566138 [2024-11-27 20:22:26,679 INFO L175 Difference]: Start difference. First operand has 125 places, 168 transitions, 1594 flow. Second operand 27 states and 275 transitions. [2024-11-27 20:22:26,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 287 transitions, 2696 flow [2024-11-27 20:22:26,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 287 transitions, 2672 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-27 20:22:26,738 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1892 flow [2024-11-27 20:22:26,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1892, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-11-27 20:22:26,741 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 123 predicate places. [2024-11-27 20:22:26,741 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1892 flow [2024-11-27 20:22:26,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:26,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:26,742 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:26,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:22:26,742 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:26,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1549539519, now seen corresponding path program 7 times [2024-11-27 20:22:26,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:26,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925512024] [2024-11-27 20:22:26,743 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:22:26,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:27,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925512024] [2024-11-27 20:22:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925512024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:27,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:27,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774519590] [2024-11-27 20:22:27,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:27,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:27,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:27,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:27,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:27,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:27,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1892 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:27,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:27,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:27,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:29,768 INFO L124 PetriNetUnfolderBase]: 1531/2742 cut-off events. [2024-11-27 20:22:29,768 INFO L125 PetriNetUnfolderBase]: For 11429/11429 co-relation queries the response was YES. [2024-11-27 20:22:29,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11514 conditions, 2742 events. 1531/2742 cut-off events. For 11429/11429 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 16527 event pairs, 116 based on Foata normal form. 1/2743 useless extension candidates. Maximal degree in co-relation 11418. Up to 592 conditions per place. [2024-11-27 20:22:29,788 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 156 selfloop transitions, 146 changer transitions 7/310 dead transitions. [2024-11-27 20:22:29,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 310 transitions, 3286 flow [2024-11-27 20:22:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:22:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:22:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 270 transitions. [2024-11-27 20:22:29,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-11-27 20:22:29,790 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1892 flow. Second operand 25 states and 270 transitions. [2024-11-27 20:22:29,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 310 transitions, 3286 flow [2024-11-27 20:22:29,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 310 transitions, 2946 flow, removed 19 selfloop flow, removed 23 redundant places. [2024-11-27 20:22:29,860 INFO L231 Difference]: Finished difference. Result has 158 places, 208 transitions, 2379 flow [2024-11-27 20:22:29,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2379, PETRI_PLACES=158, PETRI_TRANSITIONS=208} [2024-11-27 20:22:29,861 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 132 predicate places. [2024-11-27 20:22:29,861 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 208 transitions, 2379 flow [2024-11-27 20:22:29,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:29,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:29,861 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:29,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:22:29,862 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:29,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:29,862 INFO L85 PathProgramCache]: Analyzing trace with hash -363096629, now seen corresponding path program 8 times [2024-11-27 20:22:29,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:29,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541227905] [2024-11-27 20:22:29,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:22:29,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:29,888 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:22:29,888 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541227905] [2024-11-27 20:22:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541227905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:30,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:30,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:30,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345439788] [2024-11-27 20:22:30,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:30,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:30,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:30,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:30,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:30,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:30,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 208 transitions, 2379 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:30,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:30,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:30,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:32,714 INFO L124 PetriNetUnfolderBase]: 1556/2791 cut-off events. [2024-11-27 20:22:32,715 INFO L125 PetriNetUnfolderBase]: For 12021/12021 co-relation queries the response was YES. [2024-11-27 20:22:32,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12217 conditions, 2791 events. 1556/2791 cut-off events. For 12021/12021 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16990 event pairs, 90 based on Foata normal form. 1/2792 useless extension candidates. Maximal degree in co-relation 12114. Up to 564 conditions per place. [2024-11-27 20:22:32,742 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 161 selfloop transitions, 152 changer transitions 7/321 dead transitions. [2024-11-27 20:22:32,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 321 transitions, 3532 flow [2024-11-27 20:22:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:22:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-27 20:22:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 268 transitions. [2024-11-27 20:22:32,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-11-27 20:22:32,747 INFO L175 Difference]: Start difference. First operand has 158 places, 208 transitions, 2379 flow. Second operand 24 states and 268 transitions. [2024-11-27 20:22:32,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 321 transitions, 3532 flow [2024-11-27 20:22:32,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 321 transitions, 3369 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-11-27 20:22:32,838 INFO L231 Difference]: Finished difference. Result has 180 places, 221 transitions, 2737 flow [2024-11-27 20:22:32,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2737, PETRI_PLACES=180, PETRI_TRANSITIONS=221} [2024-11-27 20:22:32,839 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 154 predicate places. [2024-11-27 20:22:32,839 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 221 transitions, 2737 flow [2024-11-27 20:22:32,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:32,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:32,839 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:32,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:22:32,839 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:32,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1137112595, now seen corresponding path program 9 times [2024-11-27 20:22:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:32,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630145416] [2024-11-27 20:22:32,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:22:32,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:32,886 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:22:32,886 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:33,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630145416] [2024-11-27 20:22:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630145416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:33,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269958786] [2024-11-27 20:22:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:33,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:33,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:33,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:33,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:33,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:33,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 221 transitions, 2737 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:33,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:33,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:33,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:34,826 INFO L124 PetriNetUnfolderBase]: 1562/2802 cut-off events. [2024-11-27 20:22:34,827 INFO L125 PetriNetUnfolderBase]: For 14338/14338 co-relation queries the response was YES. [2024-11-27 20:22:34,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12862 conditions, 2802 events. 1562/2802 cut-off events. For 14338/14338 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 17041 event pairs, 127 based on Foata normal form. 1/2803 useless extension candidates. Maximal degree in co-relation 12754. Up to 564 conditions per place. [2024-11-27 20:22:34,849 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 164 selfloop transitions, 152 changer transitions 7/324 dead transitions. [2024-11-27 20:22:34,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 324 transitions, 3778 flow [2024-11-27 20:22:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:22:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:22:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 278 transitions. [2024-11-27 20:22:34,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39714285714285713 [2024-11-27 20:22:34,852 INFO L175 Difference]: Start difference. First operand has 180 places, 221 transitions, 2737 flow. Second operand 25 states and 278 transitions. [2024-11-27 20:22:34,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 324 transitions, 3778 flow [2024-11-27 20:22:34,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 324 transitions, 3585 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-11-27 20:22:34,949 INFO L231 Difference]: Finished difference. Result has 193 places, 222 transitions, 2897 flow [2024-11-27 20:22:34,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2897, PETRI_PLACES=193, PETRI_TRANSITIONS=222} [2024-11-27 20:22:34,950 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 167 predicate places. [2024-11-27 20:22:34,950 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 222 transitions, 2897 flow [2024-11-27 20:22:34,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:34,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:34,951 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:34,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:22:34,951 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:34,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2081639685, now seen corresponding path program 10 times [2024-11-27 20:22:34,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:34,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72808434] [2024-11-27 20:22:34,952 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:22:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:34,972 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:22:34,972 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:35,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:35,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72808434] [2024-11-27 20:22:35,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72808434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:35,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:35,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:22:35,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241437675] [2024-11-27 20:22:35,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:35,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:22:35,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:35,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:22:35,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:22:35,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:35,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 222 transitions, 2897 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2024-11-27 20:22:35,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:35,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:35,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:36,800 INFO L124 PetriNetUnfolderBase]: 1733/3123 cut-off events. [2024-11-27 20:22:36,800 INFO L125 PetriNetUnfolderBase]: For 17275/17275 co-relation queries the response was YES. [2024-11-27 20:22:36,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14553 conditions, 3123 events. 1733/3123 cut-off events. For 17275/17275 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 19664 event pairs, 234 based on Foata normal form. 1/3124 useless extension candidates. Maximal degree in co-relation 14445. Up to 898 conditions per place. [2024-11-27 20:22:36,831 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 187 selfloop transitions, 142 changer transitions 9/339 dead transitions. [2024-11-27 20:22:36,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 339 transitions, 4217 flow [2024-11-27 20:22:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 20:22:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-27 20:22:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 240 transitions. [2024-11-27 20:22:36,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-27 20:22:36,834 INFO L175 Difference]: Start difference. First operand has 193 places, 222 transitions, 2897 flow. Second operand 20 states and 240 transitions. [2024-11-27 20:22:36,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 339 transitions, 4217 flow [2024-11-27 20:22:36,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 339 transitions, 3836 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-11-27 20:22:36,917 INFO L231 Difference]: Finished difference. Result has 196 places, 242 transitions, 3226 flow [2024-11-27 20:22:36,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3226, PETRI_PLACES=196, PETRI_TRANSITIONS=242} [2024-11-27 20:22:36,917 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 170 predicate places. [2024-11-27 20:22:36,917 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 242 transitions, 3226 flow [2024-11-27 20:22:36,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2024-11-27 20:22:36,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:36,918 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:36,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:22:36,918 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:36,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:36,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1311537985, now seen corresponding path program 11 times [2024-11-27 20:22:36,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:36,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271911702] [2024-11-27 20:22:36,919 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:22:36,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:36,986 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:22:36,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:37,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:37,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271911702] [2024-11-27 20:22:37,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271911702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:37,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:37,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:37,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039888819] [2024-11-27 20:22:37,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:37,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:37,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:37,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:37,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:37,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:37,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 242 transitions, 3226 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:37,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:37,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:37,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:39,183 INFO L124 PetriNetUnfolderBase]: 1828/3341 cut-off events. [2024-11-27 20:22:39,183 INFO L125 PetriNetUnfolderBase]: For 18966/18966 co-relation queries the response was YES. [2024-11-27 20:22:39,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15234 conditions, 3341 events. 1828/3341 cut-off events. For 18966/18966 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 21639 event pairs, 213 based on Foata normal form. 1/3342 useless extension candidates. Maximal degree in co-relation 15120. Up to 1037 conditions per place. [2024-11-27 20:22:39,208 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 185 selfloop transitions, 122 changer transitions 7/315 dead transitions. [2024-11-27 20:22:39,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 315 transitions, 4192 flow [2024-11-27 20:22:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:22:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:22:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 193 transitions. [2024-11-27 20:22:39,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38293650793650796 [2024-11-27 20:22:39,210 INFO L175 Difference]: Start difference. First operand has 196 places, 242 transitions, 3226 flow. Second operand 18 states and 193 transitions. [2024-11-27 20:22:39,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 315 transitions, 4192 flow [2024-11-27 20:22:39,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 315 transitions, 4081 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-11-27 20:22:39,377 INFO L231 Difference]: Finished difference. Result has 207 places, 246 transitions, 3445 flow [2024-11-27 20:22:39,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3445, PETRI_PLACES=207, PETRI_TRANSITIONS=246} [2024-11-27 20:22:39,378 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 181 predicate places. [2024-11-27 20:22:39,378 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 246 transitions, 3445 flow [2024-11-27 20:22:39,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:39,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:39,379 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:39,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:22:39,379 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:39,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 189153691, now seen corresponding path program 12 times [2024-11-27 20:22:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:39,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010272626] [2024-11-27 20:22:39,380 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:22:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:39,407 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:22:39,408 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:39,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:39,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010272626] [2024-11-27 20:22:39,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010272626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:39,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:39,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882219031] [2024-11-27 20:22:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:39,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:39,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:39,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:39,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:39,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 246 transitions, 3445 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:39,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:39,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:39,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:41,471 INFO L124 PetriNetUnfolderBase]: 1980/3599 cut-off events. [2024-11-27 20:22:41,471 INFO L125 PetriNetUnfolderBase]: For 22860/22860 co-relation queries the response was YES. [2024-11-27 20:22:41,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17000 conditions, 3599 events. 1980/3599 cut-off events. For 22860/22860 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 23537 event pairs, 336 based on Foata normal form. 5/3604 useless extension candidates. Maximal degree in co-relation 16883. Up to 1067 conditions per place. [2024-11-27 20:22:41,494 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 209 selfloop transitions, 153 changer transitions 9/372 dead transitions. [2024-11-27 20:22:41,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 372 transitions, 4946 flow [2024-11-27 20:22:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:22:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-27 20:22:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 269 transitions. [2024-11-27 20:22:41,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40029761904761907 [2024-11-27 20:22:41,496 INFO L175 Difference]: Start difference. First operand has 207 places, 246 transitions, 3445 flow. Second operand 24 states and 269 transitions. [2024-11-27 20:22:41,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 372 transitions, 4946 flow [2024-11-27 20:22:41,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 372 transitions, 4652 flow, removed 18 selfloop flow, removed 17 redundant places. [2024-11-27 20:22:41,652 INFO L231 Difference]: Finished difference. Result has 217 places, 261 transitions, 3821 flow [2024-11-27 20:22:41,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3821, PETRI_PLACES=217, PETRI_TRANSITIONS=261} [2024-11-27 20:22:41,653 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2024-11-27 20:22:41,653 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 261 transitions, 3821 flow [2024-11-27 20:22:41,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:41,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:41,653 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:41,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:22:41,653 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:41,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 220842099, now seen corresponding path program 13 times [2024-11-27 20:22:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106825211] [2024-11-27 20:22:41,654 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:22:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:42,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106825211] [2024-11-27 20:22:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106825211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:42,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:42,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:42,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286244201] [2024-11-27 20:22:42,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:42,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:42,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:42,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:42,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:42,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:42,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 261 transitions, 3821 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:42,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:42,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:42,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:44,105 INFO L124 PetriNetUnfolderBase]: 2233/4064 cut-off events. [2024-11-27 20:22:44,106 INFO L125 PetriNetUnfolderBase]: For 26561/26561 co-relation queries the response was YES. [2024-11-27 20:22:44,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19573 conditions, 4064 events. 2233/4064 cut-off events. For 26561/26561 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27371 event pairs, 239 based on Foata normal form. 1/4065 useless extension candidates. Maximal degree in co-relation 19453. Up to 928 conditions per place. [2024-11-27 20:22:44,132 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 214 selfloop transitions, 207 changer transitions 8/430 dead transitions. [2024-11-27 20:22:44,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 430 transitions, 6021 flow [2024-11-27 20:22:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:22:44,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-27 20:22:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 261 transitions. [2024-11-27 20:22:44,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4052795031055901 [2024-11-27 20:22:44,134 INFO L175 Difference]: Start difference. First operand has 217 places, 261 transitions, 3821 flow. Second operand 23 states and 261 transitions. [2024-11-27 20:22:44,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 430 transitions, 6021 flow [2024-11-27 20:22:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 430 transitions, 5754 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-11-27 20:22:44,274 INFO L231 Difference]: Finished difference. Result has 235 places, 321 transitions, 5115 flow [2024-11-27 20:22:44,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3630, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5115, PETRI_PLACES=235, PETRI_TRANSITIONS=321} [2024-11-27 20:22:44,274 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 209 predicate places. [2024-11-27 20:22:44,274 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 321 transitions, 5115 flow [2024-11-27 20:22:44,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:44,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:44,275 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:44,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:22:44,275 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:44,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1691794049, now seen corresponding path program 14 times [2024-11-27 20:22:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:44,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817080407] [2024-11-27 20:22:44,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:22:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:44,309 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:22:44,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:44,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:44,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817080407] [2024-11-27 20:22:44,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817080407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:44,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:44,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:44,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176701357] [2024-11-27 20:22:44,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:44,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:44,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:44,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:44,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:44,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:44,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 321 transitions, 5115 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:44,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:44,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:44,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:46,425 INFO L124 PetriNetUnfolderBase]: 2228/4059 cut-off events. [2024-11-27 20:22:46,426 INFO L125 PetriNetUnfolderBase]: For 30865/30865 co-relation queries the response was YES. [2024-11-27 20:22:46,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20752 conditions, 4059 events. 2228/4059 cut-off events. For 30865/30865 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27285 event pairs, 162 based on Foata normal form. 1/4060 useless extension candidates. Maximal degree in co-relation 20621. Up to 713 conditions per place. [2024-11-27 20:22:46,453 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 164 selfloop transitions, 246 changer transitions 7/418 dead transitions. [2024-11-27 20:22:46,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 418 transitions, 6403 flow [2024-11-27 20:22:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:22:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-27 20:22:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 247 transitions. [2024-11-27 20:22:46,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38354037267080743 [2024-11-27 20:22:46,455 INFO L175 Difference]: Start difference. First operand has 235 places, 321 transitions, 5115 flow. Second operand 23 states and 247 transitions. [2024-11-27 20:22:46,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 418 transitions, 6403 flow [2024-11-27 20:22:46,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 418 transitions, 6235 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-11-27 20:22:46,639 INFO L231 Difference]: Finished difference. Result has 258 places, 329 transitions, 5628 flow [2024-11-27 20:22:46,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5628, PETRI_PLACES=258, PETRI_TRANSITIONS=329} [2024-11-27 20:22:46,639 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 232 predicate places. [2024-11-27 20:22:46,639 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 329 transitions, 5628 flow [2024-11-27 20:22:46,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:46,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:46,640 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:46,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:22:46,640 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:46,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1139543729, now seen corresponding path program 15 times [2024-11-27 20:22:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:46,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770670786] [2024-11-27 20:22:46,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:22:46,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:46,661 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:22:46,662 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770670786] [2024-11-27 20:22:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770670786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:47,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975103838] [2024-11-27 20:22:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:47,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:47,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:47,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:47,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:47,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 329 transitions, 5628 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:47,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:47,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:47,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:48,459 INFO L124 PetriNetUnfolderBase]: 2229/4065 cut-off events. [2024-11-27 20:22:48,459 INFO L125 PetriNetUnfolderBase]: For 35612/35612 co-relation queries the response was YES. [2024-11-27 20:22:48,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21943 conditions, 4065 events. 2229/4065 cut-off events. For 35612/35612 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27432 event pairs, 490 based on Foata normal form. 6/4071 useless extension candidates. Maximal degree in co-relation 21806. Up to 1217 conditions per place. [2024-11-27 20:22:48,483 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 214 selfloop transitions, 161 changer transitions 11/387 dead transitions. [2024-11-27 20:22:48,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 387 transitions, 6666 flow [2024-11-27 20:22:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:22:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-27 20:22:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 168 transitions. [2024-11-27 20:22:48,484 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-27 20:22:48,485 INFO L175 Difference]: Start difference. First operand has 258 places, 329 transitions, 5628 flow. Second operand 16 states and 168 transitions. [2024-11-27 20:22:48,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 387 transitions, 6666 flow [2024-11-27 20:22:48,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 387 transitions, 6400 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-11-27 20:22:48,672 INFO L231 Difference]: Finished difference. Result has 266 places, 329 transitions, 5721 flow [2024-11-27 20:22:48,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5380, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5721, PETRI_PLACES=266, PETRI_TRANSITIONS=329} [2024-11-27 20:22:48,673 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 240 predicate places. [2024-11-27 20:22:48,673 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 329 transitions, 5721 flow [2024-11-27 20:22:48,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:48,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:48,673 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:48,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:22:48,674 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:48,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1662923501, now seen corresponding path program 16 times [2024-11-27 20:22:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:48,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229723442] [2024-11-27 20:22:48,674 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:22:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:48,689 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:22:48,689 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:48,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:48,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229723442] [2024-11-27 20:22:48,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229723442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:48,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:48,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:22:48,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586867070] [2024-11-27 20:22:48,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:48,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:22:48,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:48,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:22:48,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:22:48,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:48,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 329 transitions, 5721 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2024-11-27 20:22:48,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:48,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:48,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:50,382 INFO L124 PetriNetUnfolderBase]: 2214/4032 cut-off events. [2024-11-27 20:22:50,383 INFO L125 PetriNetUnfolderBase]: For 38713/38713 co-relation queries the response was YES. [2024-11-27 20:22:50,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21942 conditions, 4032 events. 2214/4032 cut-off events. For 38713/38713 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 27080 event pairs, 146 based on Foata normal form. 1/4033 useless extension candidates. Maximal degree in co-relation 21804. Up to 692 conditions per place. [2024-11-27 20:22:50,412 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 178 selfloop transitions, 237 changer transitions 7/423 dead transitions. [2024-11-27 20:22:50,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 423 transitions, 6922 flow [2024-11-27 20:22:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:22:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-27 20:22:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 248 transitions. [2024-11-27 20:22:50,414 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-11-27 20:22:50,414 INFO L175 Difference]: Start difference. First operand has 266 places, 329 transitions, 5721 flow. Second operand 22 states and 248 transitions. [2024-11-27 20:22:50,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 423 transitions, 6922 flow [2024-11-27 20:22:50,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 423 transitions, 6686 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-11-27 20:22:50,615 INFO L231 Difference]: Finished difference. Result has 275 places, 328 transitions, 5967 flow [2024-11-27 20:22:50,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5497, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5967, PETRI_PLACES=275, PETRI_TRANSITIONS=328} [2024-11-27 20:22:50,616 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 249 predicate places. [2024-11-27 20:22:50,616 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 328 transitions, 5967 flow [2024-11-27 20:22:50,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2024-11-27 20:22:50,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:50,616 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:50,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 20:22:50,616 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:50,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1654731891, now seen corresponding path program 17 times [2024-11-27 20:22:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:50,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440477820] [2024-11-27 20:22:50,618 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:22:50,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:50,659 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:22:50,659 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:51,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:51,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440477820] [2024-11-27 20:22:51,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440477820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:51,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:51,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:51,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563383581] [2024-11-27 20:22:51,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:51,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:51,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:51,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:51,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:51,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:51,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 328 transitions, 5967 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:51,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:51,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:51,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:53,488 INFO L124 PetriNetUnfolderBase]: 2385/4329 cut-off events. [2024-11-27 20:22:53,488 INFO L125 PetriNetUnfolderBase]: For 41754/41754 co-relation queries the response was YES. [2024-11-27 20:22:53,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24186 conditions, 4329 events. 2385/4329 cut-off events. For 41754/41754 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 29455 event pairs, 342 based on Foata normal form. 5/4334 useless extension candidates. Maximal degree in co-relation 24049. Up to 983 conditions per place. [2024-11-27 20:22:53,530 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 239 selfloop transitions, 212 changer transitions 9/461 dead transitions. [2024-11-27 20:22:53,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 461 transitions, 7835 flow [2024-11-27 20:22:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:22:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-27 20:22:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 272 transitions. [2024-11-27 20:22:53,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-27 20:22:53,532 INFO L175 Difference]: Start difference. First operand has 275 places, 328 transitions, 5967 flow. Second operand 24 states and 272 transitions. [2024-11-27 20:22:53,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 461 transitions, 7835 flow [2024-11-27 20:22:53,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 461 transitions, 7480 flow, removed 20 selfloop flow, removed 14 redundant places. [2024-11-27 20:22:53,783 INFO L231 Difference]: Finished difference. Result has 290 places, 346 transitions, 6516 flow [2024-11-27 20:22:53,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6516, PETRI_PLACES=290, PETRI_TRANSITIONS=346} [2024-11-27 20:22:53,784 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 264 predicate places. [2024-11-27 20:22:53,784 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 346 transitions, 6516 flow [2024-11-27 20:22:53,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:53,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:53,784 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:53,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 20:22:53,784 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:53,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:53,785 INFO L85 PathProgramCache]: Analyzing trace with hash 994858065, now seen corresponding path program 18 times [2024-11-27 20:22:53,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:53,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248525964] [2024-11-27 20:22:53,785 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:22:53,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:53,803 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:22:53,803 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:54,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248525964] [2024-11-27 20:22:54,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248525964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:54,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:54,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:54,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458663426] [2024-11-27 20:22:54,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:54,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:54,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:54,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:54,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:54,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:54,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 346 transitions, 6516 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:54,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:54,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:54,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:56,658 INFO L124 PetriNetUnfolderBase]: 2563/4651 cut-off events. [2024-11-27 20:22:56,658 INFO L125 PetriNetUnfolderBase]: For 50110/50110 co-relation queries the response was YES. [2024-11-27 20:22:56,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26350 conditions, 4651 events. 2563/4651 cut-off events. For 50110/50110 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 32097 event pairs, 189 based on Foata normal form. 1/4652 useless extension candidates. Maximal degree in co-relation 26206. Up to 863 conditions per place. [2024-11-27 20:22:56,696 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 200 selfloop transitions, 263 changer transitions 8/472 dead transitions. [2024-11-27 20:22:56,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 472 transitions, 8268 flow [2024-11-27 20:22:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 20:22:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-27 20:22:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 282 transitions. [2024-11-27 20:22:56,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3873626373626374 [2024-11-27 20:22:56,698 INFO L175 Difference]: Start difference. First operand has 290 places, 346 transitions, 6516 flow. Second operand 26 states and 282 transitions. [2024-11-27 20:22:56,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 472 transitions, 8268 flow [2024-11-27 20:22:57,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 472 transitions, 7945 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-11-27 20:22:57,013 INFO L231 Difference]: Finished difference. Result has 310 places, 365 transitions, 7239 flow [2024-11-27 20:22:57,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6219, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7239, PETRI_PLACES=310, PETRI_TRANSITIONS=365} [2024-11-27 20:22:57,014 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 284 predicate places. [2024-11-27 20:22:57,014 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 365 transitions, 7239 flow [2024-11-27 20:22:57,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:57,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:57,014 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:57,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 20:22:57,015 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:57,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash 129751265, now seen corresponding path program 19 times [2024-11-27 20:22:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:57,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513515634] [2024-11-27 20:22:57,015 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:22:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:22:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:57,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513515634] [2024-11-27 20:22:57,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513515634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:57,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:57,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:22:57,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287056784] [2024-11-27 20:22:57,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:57,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:57,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:57,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:57,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:57,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:22:57,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 365 transitions, 7239 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:57,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:57,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:22:57,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:59,587 INFO L124 PetriNetUnfolderBase]: 2678/4876 cut-off events. [2024-11-27 20:22:59,587 INFO L125 PetriNetUnfolderBase]: For 54897/54897 co-relation queries the response was YES. [2024-11-27 20:22:59,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28448 conditions, 4876 events. 2678/4876 cut-off events. For 54897/54897 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 34057 event pairs, 282 based on Foata normal form. 4/4880 useless extension candidates. Maximal degree in co-relation 28299. Up to 1128 conditions per place. [2024-11-27 20:22:59,632 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 254 selfloop transitions, 238 changer transitions 11/504 dead transitions. [2024-11-27 20:22:59,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 504 transitions, 9262 flow [2024-11-27 20:22:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 20:22:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-27 20:22:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 278 transitions. [2024-11-27 20:22:59,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38186813186813184 [2024-11-27 20:22:59,634 INFO L175 Difference]: Start difference. First operand has 310 places, 365 transitions, 7239 flow. Second operand 26 states and 278 transitions. [2024-11-27 20:22:59,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 504 transitions, 9262 flow [2024-11-27 20:22:59,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 504 transitions, 8963 flow, removed 17 selfloop flow, removed 17 redundant places. [2024-11-27 20:22:59,951 INFO L231 Difference]: Finished difference. Result has 326 places, 382 transitions, 8016 flow [2024-11-27 20:22:59,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6980, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8016, PETRI_PLACES=326, PETRI_TRANSITIONS=382} [2024-11-27 20:22:59,952 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 300 predicate places. [2024-11-27 20:22:59,952 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 382 transitions, 8016 flow [2024-11-27 20:22:59,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:59,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:59,952 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:59,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 20:22:59,952 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:22:59,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1076257121, now seen corresponding path program 20 times [2024-11-27 20:22:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:59,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362739482] [2024-11-27 20:22:59,953 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:22:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:59,971 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:22:59,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362739482] [2024-11-27 20:23:00,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362739482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:00,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:00,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:23:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366689159] [2024-11-27 20:23:00,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:00,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:23:00,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:00,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:23:00,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:23:00,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:00,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 382 transitions, 8016 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:00,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:00,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:00,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:02,934 INFO L124 PetriNetUnfolderBase]: 3132/5675 cut-off events. [2024-11-27 20:23:02,934 INFO L125 PetriNetUnfolderBase]: For 66820/66820 co-relation queries the response was YES. [2024-11-27 20:23:02,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34191 conditions, 5675 events. 3132/5675 cut-off events. For 66820/66820 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 40511 event pairs, 271 based on Foata normal form. 1/5676 useless extension candidates. Maximal degree in co-relation 34035. Up to 1052 conditions per place. [2024-11-27 20:23:02,988 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 206 selfloop transitions, 329 changer transitions 10/546 dead transitions. [2024-11-27 20:23:02,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 546 transitions, 10466 flow [2024-11-27 20:23:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 20:23:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-27 20:23:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 309 transitions. [2024-11-27 20:23:02,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3678571428571429 [2024-11-27 20:23:02,990 INFO L175 Difference]: Start difference. First operand has 326 places, 382 transitions, 8016 flow. Second operand 30 states and 309 transitions. [2024-11-27 20:23:02,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 546 transitions, 10466 flow [2024-11-27 20:23:03,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 546 transitions, 9857 flow, removed 90 selfloop flow, removed 21 redundant places. [2024-11-27 20:23:03,361 INFO L231 Difference]: Finished difference. Result has 341 places, 427 transitions, 9166 flow [2024-11-27 20:23:03,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7529, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9166, PETRI_PLACES=341, PETRI_TRANSITIONS=427} [2024-11-27 20:23:03,362 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 315 predicate places. [2024-11-27 20:23:03,362 INFO L471 AbstractCegarLoop]: Abstraction has has 341 places, 427 transitions, 9166 flow [2024-11-27 20:23:03,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:03,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:03,362 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:03,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 20:23:03,362 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:03,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:03,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1736130947, now seen corresponding path program 21 times [2024-11-27 20:23:03,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:03,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979447809] [2024-11-27 20:23:03,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:23:03,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:03,381 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:23:03,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:03,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:03,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979447809] [2024-11-27 20:23:03,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979447809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:03,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:03,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:23:03,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907391579] [2024-11-27 20:23:03,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:03,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:23:03,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:03,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:23:03,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:23:03,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:03,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 427 transitions, 9166 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:03,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:03,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:03,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:05,960 INFO L124 PetriNetUnfolderBase]: 3140/5691 cut-off events. [2024-11-27 20:23:05,960 INFO L125 PetriNetUnfolderBase]: For 67485/67485 co-relation queries the response was YES. [2024-11-27 20:23:05,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34799 conditions, 5691 events. 3140/5691 cut-off events. For 67485/67485 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 40396 event pairs, 169 based on Foata normal form. 1/5692 useless extension candidates. Maximal degree in co-relation 34646. Up to 1119 conditions per place. [2024-11-27 20:23:06,000 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 161 selfloop transitions, 347 changer transitions 7/516 dead transitions. [2024-11-27 20:23:06,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 516 transitions, 10573 flow [2024-11-27 20:23:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:23:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-27 20:23:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 243 transitions. [2024-11-27 20:23:06,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-11-27 20:23:06,002 INFO L175 Difference]: Start difference. First operand has 341 places, 427 transitions, 9166 flow. Second operand 24 states and 243 transitions. [2024-11-27 20:23:06,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 516 transitions, 10573 flow [2024-11-27 20:23:06,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 516 transitions, 10042 flow, removed 26 selfloop flow, removed 20 redundant places. [2024-11-27 20:23:06,308 INFO L231 Difference]: Finished difference. Result has 346 places, 429 transitions, 9395 flow [2024-11-27 20:23:06,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8649, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9395, PETRI_PLACES=346, PETRI_TRANSITIONS=429} [2024-11-27 20:23:06,309 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 320 predicate places. [2024-11-27 20:23:06,309 INFO L471 AbstractCegarLoop]: Abstraction has has 346 places, 429 transitions, 9395 flow [2024-11-27 20:23:06,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:06,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:06,309 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:06,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 20:23:06,309 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:06,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1221940767, now seen corresponding path program 22 times [2024-11-27 20:23:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217033413] [2024-11-27 20:23:06,310 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:23:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:06,326 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:23:06,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:06,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:06,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217033413] [2024-11-27 20:23:06,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217033413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:06,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:06,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:23:06,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958151502] [2024-11-27 20:23:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:06,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:23:06,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:06,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:23:06,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:23:06,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:06,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 429 transitions, 9395 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2024-11-27 20:23:06,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:06,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:06,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:08,444 INFO L124 PetriNetUnfolderBase]: 3131/5669 cut-off events. [2024-11-27 20:23:08,444 INFO L125 PetriNetUnfolderBase]: For 68721/68721 co-relation queries the response was YES. [2024-11-27 20:23:08,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35085 conditions, 5669 events. 3131/5669 cut-off events. For 68721/68721 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 40167 event pairs, 139 based on Foata normal form. 1/5670 useless extension candidates. Maximal degree in co-relation 34935. Up to 1119 conditions per place. [2024-11-27 20:23:08,488 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 149 selfloop transitions, 344 changer transitions 7/501 dead transitions. [2024-11-27 20:23:08,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 501 transitions, 10653 flow [2024-11-27 20:23:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:23:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-27 20:23:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 199 transitions. [2024-11-27 20:23:08,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37406015037593987 [2024-11-27 20:23:08,490 INFO L175 Difference]: Start difference. First operand has 346 places, 429 transitions, 9395 flow. Second operand 19 states and 199 transitions. [2024-11-27 20:23:08,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 501 transitions, 10653 flow [2024-11-27 20:23:08,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 501 transitions, 9894 flow, removed 5 selfloop flow, removed 21 redundant places. [2024-11-27 20:23:08,799 INFO L231 Difference]: Finished difference. Result has 344 places, 429 transitions, 9355 flow [2024-11-27 20:23:08,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8644, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9355, PETRI_PLACES=344, PETRI_TRANSITIONS=429} [2024-11-27 20:23:08,800 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 318 predicate places. [2024-11-27 20:23:08,800 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 429 transitions, 9355 flow [2024-11-27 20:23:08,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2024-11-27 20:23:08,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:08,800 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:08,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 20:23:08,801 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:08,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash -821489315, now seen corresponding path program 1 times [2024-11-27 20:23:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:08,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746626399] [2024-11-27 20:23:08,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746626399] [2024-11-27 20:23:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746626399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107162932] [2024-11-27 20:23:08,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:08,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:08,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:08,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:23:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:08,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:23:08,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:09,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:09,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107162932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:09,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:09,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-27 20:23:09,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381975630] [2024-11-27 20:23:09,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:09,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:23:09,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:09,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:23:09,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:23:09,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:09,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 429 transitions, 9355 flow. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:09,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:09,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:09,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:10,484 INFO L124 PetriNetUnfolderBase]: 3816/6827 cut-off events. [2024-11-27 20:23:10,484 INFO L125 PetriNetUnfolderBase]: For 75698/75698 co-relation queries the response was YES. [2024-11-27 20:23:10,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45195 conditions, 6827 events. 3816/6827 cut-off events. For 75698/75698 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 47002 event pairs, 815 based on Foata normal form. 558/7385 useless extension candidates. Maximal degree in co-relation 45045. Up to 1841 conditions per place. [2024-11-27 20:23:10,553 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 600 selfloop transitions, 115 changer transitions 0/716 dead transitions. [2024-11-27 20:23:10,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 716 transitions, 16064 flow [2024-11-27 20:23:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:23:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:23:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-11-27 20:23:10,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-11-27 20:23:10,554 INFO L175 Difference]: Start difference. First operand has 344 places, 429 transitions, 9355 flow. Second operand 8 states and 113 transitions. [2024-11-27 20:23:10,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 716 transitions, 16064 flow [2024-11-27 20:23:11,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 716 transitions, 15000 flow, removed 21 selfloop flow, removed 20 redundant places. [2024-11-27 20:23:11,057 INFO L231 Difference]: Finished difference. Result has 334 places, 477 transitions, 10058 flow [2024-11-27 20:23:11,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10058, PETRI_PLACES=334, PETRI_TRANSITIONS=477} [2024-11-27 20:23:11,058 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 308 predicate places. [2024-11-27 20:23:11,058 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 477 transitions, 10058 flow [2024-11-27 20:23:11,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:11,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:11,059 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:11,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:23:11,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:11,259 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:11,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash 185928938, now seen corresponding path program 1 times [2024-11-27 20:23:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473656312] [2024-11-27 20:23:11,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:11,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473656312] [2024-11-27 20:23:11,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473656312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98906984] [2024-11-27 20:23:11,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:11,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:11,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:11,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:11,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:23:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:11,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:23:11,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:11,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:11,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98906984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:11,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:11,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-27 20:23:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582706782] [2024-11-27 20:23:11,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:11,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:23:11,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:11,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:23:11,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:23:11,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:11,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 477 transitions, 10058 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:11,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:11,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:11,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:13,690 INFO L124 PetriNetUnfolderBase]: 4618/8112 cut-off events. [2024-11-27 20:23:13,690 INFO L125 PetriNetUnfolderBase]: For 88374/88374 co-relation queries the response was YES. [2024-11-27 20:23:13,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56948 conditions, 8112 events. 4618/8112 cut-off events. For 88374/88374 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 54703 event pairs, 1136 based on Foata normal form. 656/8768 useless extension candidates. Maximal degree in co-relation 56800. Up to 1824 conditions per place. [2024-11-27 20:23:13,820 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 713 selfloop transitions, 125 changer transitions 0/839 dead transitions. [2024-11-27 20:23:13,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 839 transitions, 18921 flow [2024-11-27 20:23:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:23:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:23:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-11-27 20:23:13,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-11-27 20:23:13,821 INFO L175 Difference]: Start difference. First operand has 334 places, 477 transitions, 10058 flow. Second operand 7 states and 120 transitions. [2024-11-27 20:23:13,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 839 transitions, 18921 flow [2024-11-27 20:23:14,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 839 transitions, 18581 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-11-27 20:23:14,595 INFO L231 Difference]: Finished difference. Result has 337 places, 525 transitions, 11206 flow [2024-11-27 20:23:14,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9851, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11206, PETRI_PLACES=337, PETRI_TRANSITIONS=525} [2024-11-27 20:23:14,596 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 311 predicate places. [2024-11-27 20:23:14,596 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 525 transitions, 11206 flow [2024-11-27 20:23:14,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:14,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:14,596 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:14,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:23:14,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:14,797 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:14,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1620712864, now seen corresponding path program 1 times [2024-11-27 20:23:14,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:14,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672078191] [2024-11-27 20:23:14,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:14,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:15,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672078191] [2024-11-27 20:23:15,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672078191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:15,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843930190] [2024-11-27 20:23:15,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:15,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:15,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:15,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:15,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:23:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:15,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:23:15,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:15,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:23:15,584 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 118 treesize of output 74 [2024-11-27 20:23:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:15,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:15,822 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-27 20:23:15,822 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 103 treesize of output 87 [2024-11-27 20:23:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843930190] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:15,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:23:15,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-11-27 20:23:15,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115508046] [2024-11-27 20:23:15,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:15,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:23:15,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:15,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:23:15,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:23:15,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:15,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 525 transitions, 11206 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:15,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:15,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:15,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:18,249 INFO L124 PetriNetUnfolderBase]: 5095/9111 cut-off events. [2024-11-27 20:23:18,249 INFO L125 PetriNetUnfolderBase]: For 100759/100759 co-relation queries the response was YES. [2024-11-27 20:23:18,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63622 conditions, 9111 events. 5095/9111 cut-off events. For 100759/100759 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 64352 event pairs, 1036 based on Foata normal form. 30/9141 useless extension candidates. Maximal degree in co-relation 63475. Up to 3198 conditions per place. [2024-11-27 20:23:18,334 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 358 selfloop transitions, 248 changer transitions 0/607 dead transitions. [2024-11-27 20:23:18,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 607 transitions, 13236 flow [2024-11-27 20:23:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:23:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:23:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-27 20:23:18,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-11-27 20:23:18,335 INFO L175 Difference]: Start difference. First operand has 337 places, 525 transitions, 11206 flow. Second operand 11 states and 141 transitions. [2024-11-27 20:23:18,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 607 transitions, 13236 flow [2024-11-27 20:23:19,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 607 transitions, 13109 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:23:19,114 INFO L231 Difference]: Finished difference. Result has 347 places, 540 transitions, 12015 flow [2024-11-27 20:23:19,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=11089, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12015, PETRI_PLACES=347, PETRI_TRANSITIONS=540} [2024-11-27 20:23:19,115 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 321 predicate places. [2024-11-27 20:23:19,115 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 540 transitions, 12015 flow [2024-11-27 20:23:19,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:19,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:19,115 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:19,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:19,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:19,316 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:19,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1031678210, now seen corresponding path program 2 times [2024-11-27 20:23:19,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:19,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137092470] [2024-11-27 20:23:19,316 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:19,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:19,367 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:19,367 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:19,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137092470] [2024-11-27 20:23:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137092470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:19,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:19,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:23:19,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426189539] [2024-11-27 20:23:19,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:19,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:23:19,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:19,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:23:19,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:23:19,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:19,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 540 transitions, 12015 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:19,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:19,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:19,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:22,359 INFO L124 PetriNetUnfolderBase]: 5090/9106 cut-off events. [2024-11-27 20:23:22,359 INFO L125 PetriNetUnfolderBase]: For 108288/108288 co-relation queries the response was YES. [2024-11-27 20:23:22,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65488 conditions, 9106 events. 5090/9106 cut-off events. For 108288/108288 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 64436 event pairs, 1380 based on Foata normal form. 5/9111 useless extension candidates. Maximal degree in co-relation 65338. Up to 3443 conditions per place. [2024-11-27 20:23:22,481 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 317 selfloop transitions, 244 changer transitions 10/572 dead transitions. [2024-11-27 20:23:22,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 572 transitions, 13259 flow [2024-11-27 20:23:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:23:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:23:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-11-27 20:23:22,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-11-27 20:23:22,482 INFO L175 Difference]: Start difference. First operand has 347 places, 540 transitions, 12015 flow. Second operand 10 states and 109 transitions. [2024-11-27 20:23:22,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 572 transitions, 13259 flow [2024-11-27 20:23:23,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 572 transitions, 13037 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-27 20:23:23,627 INFO L231 Difference]: Finished difference. Result has 353 places, 537 transitions, 12207 flow [2024-11-27 20:23:23,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=11760, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12207, PETRI_PLACES=353, PETRI_TRANSITIONS=537} [2024-11-27 20:23:23,628 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 327 predicate places. [2024-11-27 20:23:23,628 INFO L471 AbstractCegarLoop]: Abstraction has has 353 places, 537 transitions, 12207 flow [2024-11-27 20:23:23,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:23,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:23,628 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:23,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 20:23:23,629 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:23,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash -133650177, now seen corresponding path program 1 times [2024-11-27 20:23:23,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441575318] [2024-11-27 20:23:23,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:23,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:24,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441575318] [2024-11-27 20:23:24,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441575318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846190466] [2024-11-27 20:23:24,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:24,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:24,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:23:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:24,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:23:24,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:24,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:24,575 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-27 20:23:24,575 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 [2024-11-27 20:23:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:24,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846190466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:24,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:24,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-27 20:23:24,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572135294] [2024-11-27 20:23:24,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:24,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:23:24,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:24,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:23:24,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:23:24,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:24,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 537 transitions, 12207 flow. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:24,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:24,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:24,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:27,622 INFO L124 PetriNetUnfolderBase]: 5150/9202 cut-off events. [2024-11-27 20:23:27,622 INFO L125 PetriNetUnfolderBase]: For 112518/112518 co-relation queries the response was YES. [2024-11-27 20:23:27,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67601 conditions, 9202 events. 5150/9202 cut-off events. For 112518/112518 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 65165 event pairs, 548 based on Foata normal form. 56/9258 useless extension candidates. Maximal degree in co-relation 67449. Up to 2259 conditions per place. [2024-11-27 20:23:27,729 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 203 selfloop transitions, 420 changer transitions 1/625 dead transitions. [2024-11-27 20:23:27,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 625 transitions, 14339 flow [2024-11-27 20:23:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:23:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:23:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 186 transitions. [2024-11-27 20:23:27,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-27 20:23:27,730 INFO L175 Difference]: Start difference. First operand has 353 places, 537 transitions, 12207 flow. Second operand 18 states and 186 transitions. [2024-11-27 20:23:27,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 625 transitions, 14339 flow [2024-11-27 20:23:28,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 625 transitions, 13829 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-27 20:23:28,973 INFO L231 Difference]: Finished difference. Result has 361 places, 558 transitions, 13150 flow [2024-11-27 20:23:28,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=11620, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13150, PETRI_PLACES=361, PETRI_TRANSITIONS=558} [2024-11-27 20:23:28,973 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 335 predicate places. [2024-11-27 20:23:28,973 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 558 transitions, 13150 flow [2024-11-27 20:23:28,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:28,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:28,974 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:28,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:23:29,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:29,174 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:29,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:29,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1603851868, now seen corresponding path program 3 times [2024-11-27 20:23:29,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:29,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422028302] [2024-11-27 20:23:29,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:23:29,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:29,199 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:23:29,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:29,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:29,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422028302] [2024-11-27 20:23:29,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422028302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:29,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:29,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:23:29,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570453755] [2024-11-27 20:23:29,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:29,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:23:29,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:29,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:23:29,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:23:29,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:29,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 558 transitions, 13150 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:29,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:29,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:29,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:32,743 INFO L124 PetriNetUnfolderBase]: 5140/9187 cut-off events. [2024-11-27 20:23:32,743 INFO L125 PetriNetUnfolderBase]: For 118978/118978 co-relation queries the response was YES. [2024-11-27 20:23:32,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69259 conditions, 9187 events. 5140/9187 cut-off events. For 118978/118978 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 65082 event pairs, 1425 based on Foata normal form. 5/9192 useless extension candidates. Maximal degree in co-relation 69103. Up to 3535 conditions per place. [2024-11-27 20:23:32,834 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 346 selfloop transitions, 239 changer transitions 5/591 dead transitions. [2024-11-27 20:23:32,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 591 transitions, 14404 flow [2024-11-27 20:23:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:23:32,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:23:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-11-27 20:23:32,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-11-27 20:23:32,835 INFO L175 Difference]: Start difference. First operand has 361 places, 558 transitions, 13150 flow. Second operand 11 states and 120 transitions. [2024-11-27 20:23:32,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 591 transitions, 14404 flow [2024-11-27 20:23:33,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 591 transitions, 14106 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-27 20:23:33,872 INFO L231 Difference]: Finished difference. Result has 363 places, 554 transitions, 13233 flow [2024-11-27 20:23:33,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=12791, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13233, PETRI_PLACES=363, PETRI_TRANSITIONS=554} [2024-11-27 20:23:33,873 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 337 predicate places. [2024-11-27 20:23:33,873 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 554 transitions, 13233 flow [2024-11-27 20:23:33,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:33,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:33,873 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:33,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-27 20:23:33,874 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:33,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1313868604, now seen corresponding path program 4 times [2024-11-27 20:23:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230896914] [2024-11-27 20:23:33,874 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:23:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:33,891 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:23:33,892 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230896914] [2024-11-27 20:23:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230896914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:34,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:34,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:23:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794869034] [2024-11-27 20:23:34,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:34,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:23:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:34,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:23:34,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:23:34,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:34,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 554 transitions, 13233 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:34,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:34,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:34,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:37,020 INFO L124 PetriNetUnfolderBase]: 5053/9003 cut-off events. [2024-11-27 20:23:37,020 INFO L125 PetriNetUnfolderBase]: For 125446/125446 co-relation queries the response was YES. [2024-11-27 20:23:37,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69228 conditions, 9003 events. 5053/9003 cut-off events. For 125446/125446 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 63370 event pairs, 881 based on Foata normal form. 5/9008 useless extension candidates. Maximal degree in co-relation 69129. Up to 2069 conditions per place. [2024-11-27 20:23:37,122 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 331 selfloop transitions, 283 changer transitions 4/619 dead transitions. [2024-11-27 20:23:37,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 619 transitions, 14839 flow [2024-11-27 20:23:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:23:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-27 20:23:37,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-11-27 20:23:37,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-27 20:23:37,123 INFO L175 Difference]: Start difference. First operand has 363 places, 554 transitions, 13233 flow. Second operand 14 states and 160 transitions. [2024-11-27 20:23:37,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 619 transitions, 14839 flow [2024-11-27 20:23:37,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 619 transitions, 14332 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-27 20:23:37,995 INFO L231 Difference]: Finished difference. Result has 361 places, 554 transitions, 13288 flow [2024-11-27 20:23:37,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=12684, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13288, PETRI_PLACES=361, PETRI_TRANSITIONS=554} [2024-11-27 20:23:37,996 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 335 predicate places. [2024-11-27 20:23:37,996 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 554 transitions, 13288 flow [2024-11-27 20:23:37,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:37,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:37,997 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:37,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-27 20:23:37,997 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:37,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:37,998 INFO L85 PathProgramCache]: Analyzing trace with hash -586336099, now seen corresponding path program 2 times [2024-11-27 20:23:37,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:37,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474917894] [2024-11-27 20:23:37,998 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:38,027 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:38,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:38,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:38,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474917894] [2024-11-27 20:23:38,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474917894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:38,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641227683] [2024-11-27 20:23:38,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:38,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:38,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:38,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:38,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:23:38,768 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:38,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:38,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:23:38,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:38,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:23:38,948 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 118 treesize of output 70 [2024-11-27 20:23:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:38,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:39,125 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-27 20:23:39,126 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 [2024-11-27 20:23:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641227683] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:39,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:23:39,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 9] total 18 [2024-11-27 20:23:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272112035] [2024-11-27 20:23:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:39,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:23:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:39,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:23:39,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:23:39,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:39,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 554 transitions, 13288 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:39,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:39,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:39,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:42,357 INFO L124 PetriNetUnfolderBase]: 5456/9835 cut-off events. [2024-11-27 20:23:42,357 INFO L125 PetriNetUnfolderBase]: For 131107/131107 co-relation queries the response was YES. [2024-11-27 20:23:42,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73917 conditions, 9835 events. 5456/9835 cut-off events. For 131107/131107 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 71294 event pairs, 1144 based on Foata normal form. 34/9869 useless extension candidates. Maximal degree in co-relation 73819. Up to 3001 conditions per place. [2024-11-27 20:23:42,442 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 288 selfloop transitions, 365 changer transitions 2/656 dead transitions. [2024-11-27 20:23:42,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 656 transitions, 15495 flow [2024-11-27 20:23:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:23:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-27 20:23:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 196 transitions. [2024-11-27 20:23:42,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-27 20:23:42,444 INFO L175 Difference]: Start difference. First operand has 361 places, 554 transitions, 13288 flow. Second operand 15 states and 196 transitions. [2024-11-27 20:23:42,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 656 transitions, 15495 flow [2024-11-27 20:23:43,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 656 transitions, 15277 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-27 20:23:43,426 INFO L231 Difference]: Finished difference. Result has 372 places, 566 transitions, 14376 flow [2024-11-27 20:23:43,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13023, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14376, PETRI_PLACES=372, PETRI_TRANSITIONS=566} [2024-11-27 20:23:43,427 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2024-11-27 20:23:43,427 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 566 transitions, 14376 flow [2024-11-27 20:23:43,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:43,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:43,427 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:43,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:23:43,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:43,628 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:43,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2057018093, now seen corresponding path program 3 times [2024-11-27 20:23:43,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:43,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839333479] [2024-11-27 20:23:43,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:23:43,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:43,649 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:23:43,650 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:44,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:44,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839333479] [2024-11-27 20:23:44,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839333479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:44,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864759791] [2024-11-27 20:23:44,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:23:44,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:44,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:44,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:44,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:23:44,303 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:23:44,303 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:44,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:23:44,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:44,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:44,690 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-27 20:23:44,690 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 [2024-11-27 20:23:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:44,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864759791] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:44,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:23:44,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 16 [2024-11-27 20:23:44,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612704304] [2024-11-27 20:23:44,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:44,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:23:44,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:44,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:23:44,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:23:44,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:44,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 566 transitions, 14376 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:44,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:44,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:44,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:47,995 INFO L124 PetriNetUnfolderBase]: 5339/9640 cut-off events. [2024-11-27 20:23:47,995 INFO L125 PetriNetUnfolderBase]: For 150856/150856 co-relation queries the response was YES. [2024-11-27 20:23:48,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75929 conditions, 9640 events. 5339/9640 cut-off events. For 150856/150856 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 69915 event pairs, 1032 based on Foata normal form. 45/9685 useless extension candidates. Maximal degree in co-relation 75826. Up to 2699 conditions per place. [2024-11-27 20:23:48,091 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 313 selfloop transitions, 368 changer transitions 2/684 dead transitions. [2024-11-27 20:23:48,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 684 transitions, 16819 flow [2024-11-27 20:23:48,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:23:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 20:23:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 223 transitions. [2024-11-27 20:23:48,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4684873949579832 [2024-11-27 20:23:48,093 INFO L175 Difference]: Start difference. First operand has 372 places, 566 transitions, 14376 flow. Second operand 17 states and 223 transitions. [2024-11-27 20:23:48,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 684 transitions, 16819 flow [2024-11-27 20:23:49,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 684 transitions, 16372 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-11-27 20:23:49,285 INFO L231 Difference]: Finished difference. Result has 381 places, 568 transitions, 14757 flow [2024-11-27 20:23:49,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13883, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=14757, PETRI_PLACES=381, PETRI_TRANSITIONS=568} [2024-11-27 20:23:49,286 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2024-11-27 20:23:49,286 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 568 transitions, 14757 flow [2024-11-27 20:23:49,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:49,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:49,287 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:49,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:23:49,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 20:23:49,487 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:49,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:49,488 INFO L85 PathProgramCache]: Analyzing trace with hash -282503169, now seen corresponding path program 4 times [2024-11-27 20:23:49,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:49,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591009682] [2024-11-27 20:23:49,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:23:49,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:49,503 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:23:49,503 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:49,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591009682] [2024-11-27 20:23:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591009682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:49,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:49,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:23:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028064548] [2024-11-27 20:23:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:49,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:23:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:49,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:23:49,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:23:49,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:49,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 568 transitions, 14757 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:49,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:49,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:49,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:52,235 INFO L124 PetriNetUnfolderBase]: 5274/9497 cut-off events. [2024-11-27 20:23:52,235 INFO L125 PetriNetUnfolderBase]: For 158103/158103 co-relation queries the response was YES. [2024-11-27 20:23:52,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76610 conditions, 9497 events. 5274/9497 cut-off events. For 158103/158103 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 68189 event pairs, 1517 based on Foata normal form. 4/9501 useless extension candidates. Maximal degree in co-relation 76507. Up to 3775 conditions per place. [2024-11-27 20:23:52,597 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 358 selfloop transitions, 246 changer transitions 5/610 dead transitions. [2024-11-27 20:23:52,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 610 transitions, 16144 flow [2024-11-27 20:23:52,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:23:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:23:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-11-27 20:23:52,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-11-27 20:23:52,598 INFO L175 Difference]: Start difference. First operand has 381 places, 568 transitions, 14757 flow. Second operand 12 states and 139 transitions. [2024-11-27 20:23:52,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 610 transitions, 16144 flow [2024-11-27 20:23:53,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 610 transitions, 15560 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-27 20:23:53,707 INFO L231 Difference]: Finished difference. Result has 381 places, 566 transitions, 14734 flow [2024-11-27 20:23:53,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=14097, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14734, PETRI_PLACES=381, PETRI_TRANSITIONS=566} [2024-11-27 20:23:53,708 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2024-11-27 20:23:53,708 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 566 transitions, 14734 flow [2024-11-27 20:23:53,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:53,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:53,708 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:53,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-27 20:23:53,708 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:23:53,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash 561825802, now seen corresponding path program 5 times [2024-11-27 20:23:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:53,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177362976] [2024-11-27 20:23:53,709 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:23:53,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:53,753 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:23:53,753 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:23:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:55,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177362976] [2024-11-27 20:23:55,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177362976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:55,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627461333] [2024-11-27 20:23:55,296 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:23:55,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:55,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:55,298 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:55,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:23:55,690 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:23:55,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:55,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:23:55,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:56,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:23:56,050 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 118 treesize of output 74 [2024-11-27 20:23:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:56,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:56,281 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-27 20:23:56,282 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 111 treesize of output 95 [2024-11-27 20:23:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:23:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627461333] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:56,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:23:56,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 8] total 21 [2024-11-27 20:23:56,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947744664] [2024-11-27 20:23:56,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:56,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:23:56,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:56,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:23:56,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:23:56,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:23:56,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 566 transitions, 14734 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:56,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:56,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:23:56,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:59,352 INFO L124 PetriNetUnfolderBase]: 5392/9728 cut-off events. [2024-11-27 20:23:59,352 INFO L125 PetriNetUnfolderBase]: For 164791/164791 co-relation queries the response was YES. [2024-11-27 20:23:59,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78348 conditions, 9728 events. 5392/9728 cut-off events. For 164791/164791 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 70569 event pairs, 1159 based on Foata normal form. 30/9758 useless extension candidates. Maximal degree in co-relation 78245. Up to 3147 conditions per place. [2024-11-27 20:23:59,501 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 389 selfloop transitions, 246 changer transitions 0/636 dead transitions. [2024-11-27 20:23:59,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 636 transitions, 16684 flow [2024-11-27 20:23:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:23:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:23:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-11-27 20:23:59,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-11-27 20:23:59,502 INFO L175 Difference]: Start difference. First operand has 381 places, 566 transitions, 14734 flow. Second operand 11 states and 142 transitions. [2024-11-27 20:23:59,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 636 transitions, 16684 flow [2024-11-27 20:24:00,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 636 transitions, 16324 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-27 20:24:00,717 INFO L231 Difference]: Finished difference. Result has 384 places, 572 transitions, 15139 flow [2024-11-27 20:24:00,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=14397, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15139, PETRI_PLACES=384, PETRI_TRANSITIONS=572} [2024-11-27 20:24:00,718 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 358 predicate places. [2024-11-27 20:24:00,719 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 572 transitions, 15139 flow [2024-11-27 20:24:00,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:00,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:00,719 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:00,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:00,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 20:24:00,920 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:00,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:00,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1960314192, now seen corresponding path program 6 times [2024-11-27 20:24:00,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:00,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807753299] [2024-11-27 20:24:00,920 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:00,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:00,951 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-27 20:24:00,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:01,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:01,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807753299] [2024-11-27 20:24:01,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807753299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:01,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334034861] [2024-11-27 20:24:01,374 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:01,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:01,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:01,376 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:01,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:24:01,551 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-27 20:24:01,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:01,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:24:01,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:01,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:01,855 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-27 20:24:01,856 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 [2024-11-27 20:24:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:01,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334034861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:01,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:01,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 16 [2024-11-27 20:24:01,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249160557] [2024-11-27 20:24:01,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:01,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:24:01,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:01,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:24:01,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:24:01,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:01,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 572 transitions, 15139 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:01,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:01,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:01,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:05,937 INFO L124 PetriNetUnfolderBase]: 5631/10245 cut-off events. [2024-11-27 20:24:05,937 INFO L125 PetriNetUnfolderBase]: For 177451/177451 co-relation queries the response was YES. [2024-11-27 20:24:06,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82917 conditions, 10245 events. 5631/10245 cut-off events. For 177451/177451 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 76117 event pairs, 1081 based on Foata normal form. 52/10297 useless extension candidates. Maximal degree in co-relation 82812. Up to 2876 conditions per place. [2024-11-27 20:24:06,063 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 374 selfloop transitions, 306 changer transitions 0/681 dead transitions. [2024-11-27 20:24:06,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 681 transitions, 17815 flow [2024-11-27 20:24:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:24:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-27 20:24:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 178 transitions. [2024-11-27 20:24:06,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-11-27 20:24:06,067 INFO L175 Difference]: Start difference. First operand has 384 places, 572 transitions, 15139 flow. Second operand 16 states and 178 transitions. [2024-11-27 20:24:06,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 681 transitions, 17815 flow [2024-11-27 20:24:07,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 681 transitions, 17328 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-11-27 20:24:07,523 INFO L231 Difference]: Finished difference. Result has 395 places, 611 transitions, 16360 flow [2024-11-27 20:24:07,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=14642, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=16360, PETRI_PLACES=395, PETRI_TRANSITIONS=611} [2024-11-27 20:24:07,523 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 369 predicate places. [2024-11-27 20:24:07,524 INFO L471 AbstractCegarLoop]: Abstraction has has 395 places, 611 transitions, 16360 flow [2024-11-27 20:24:07,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:07,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:07,524 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:07,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:24:07,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:07,724 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:07,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1873837141, now seen corresponding path program 5 times [2024-11-27 20:24:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:07,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598660992] [2024-11-27 20:24:07,725 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:24:07,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:07,764 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:24:07,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 20:24:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598660992] [2024-11-27 20:24:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598660992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257506308] [2024-11-27 20:24:08,606 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:24:08,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:08,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:08,608 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:08,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:24:08,847 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:24:08,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:08,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:24:08,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:09,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:24:09,015 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 118 treesize of output 74 [2024-11-27 20:24:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:09,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:09,217 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-27 20:24:09,217 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 [2024-11-27 20:24:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:09,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257506308] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:09,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:24:09,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 8] total 22 [2024-11-27 20:24:09,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626850474] [2024-11-27 20:24:09,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:09,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:24:09,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:09,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:24:09,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:24:09,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:09,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 611 transitions, 16360 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:09,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:09,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:09,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:12,625 INFO L124 PetriNetUnfolderBase]: 5746/10479 cut-off events. [2024-11-27 20:24:12,626 INFO L125 PetriNetUnfolderBase]: For 183002/183002 co-relation queries the response was YES. [2024-11-27 20:24:12,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85778 conditions, 10479 events. 5746/10479 cut-off events. For 183002/183002 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 78288 event pairs, 1314 based on Foata normal form. 34/10513 useless extension candidates. Maximal degree in co-relation 85670. Up to 3700 conditions per place. [2024-11-27 20:24:12,788 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 343 selfloop transitions, 345 changer transitions 1/690 dead transitions. [2024-11-27 20:24:12,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 690 transitions, 18487 flow [2024-11-27 20:24:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:24:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 20:24:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 174 transitions. [2024-11-27 20:24:12,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47802197802197804 [2024-11-27 20:24:12,789 INFO L175 Difference]: Start difference. First operand has 395 places, 611 transitions, 16360 flow. Second operand 13 states and 174 transitions. [2024-11-27 20:24:12,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 690 transitions, 18487 flow [2024-11-27 20:24:14,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 690 transitions, 18094 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-11-27 20:24:14,338 INFO L231 Difference]: Finished difference. Result has 401 places, 615 transitions, 17148 flow [2024-11-27 20:24:14,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=15928, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17148, PETRI_PLACES=401, PETRI_TRANSITIONS=615} [2024-11-27 20:24:14,339 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 375 predicate places. [2024-11-27 20:24:14,339 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 615 transitions, 17148 flow [2024-11-27 20:24:14,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:14,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:14,339 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:14,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:24:14,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-27 20:24:14,540 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:14,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1159162460, now seen corresponding path program 7 times [2024-11-27 20:24:14,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:14,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248963984] [2024-11-27 20:24:14,541 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:24:14,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:15,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:15,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248963984] [2024-11-27 20:24:15,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248963984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732300320] [2024-11-27 20:24:15,235 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:24:15,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:15,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:15,237 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:15,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:24:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:15,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:24:15,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:15,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:24:15,541 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 118 treesize of output 74 [2024-11-27 20:24:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:15,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:15,720 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-27 20:24:15,720 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 [2024-11-27 20:24:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:15,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732300320] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:15,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:24:15,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-11-27 20:24:15,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276307256] [2024-11-27 20:24:15,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:15,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:24:15,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:15,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:24:15,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:24:15,751 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:15,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 615 transitions, 17148 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:15,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:15,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:15,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:19,159 INFO L124 PetriNetUnfolderBase]: 5641/10287 cut-off events. [2024-11-27 20:24:19,159 INFO L125 PetriNetUnfolderBase]: For 206301/206301 co-relation queries the response was YES. [2024-11-27 20:24:19,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87386 conditions, 10287 events. 5641/10287 cut-off events. For 206301/206301 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 76720 event pairs, 1132 based on Foata normal form. 30/10317 useless extension candidates. Maximal degree in co-relation 87279. Up to 3058 conditions per place. [2024-11-27 20:24:19,293 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 403 selfloop transitions, 284 changer transitions 0/688 dead transitions. [2024-11-27 20:24:19,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 688 transitions, 19001 flow [2024-11-27 20:24:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:24:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-27 20:24:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-11-27 20:24:19,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-11-27 20:24:19,294 INFO L175 Difference]: Start difference. First operand has 401 places, 615 transitions, 17148 flow. Second operand 14 states and 174 transitions. [2024-11-27 20:24:19,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 688 transitions, 19001 flow [2024-11-27 20:24:20,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 688 transitions, 18763 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-27 20:24:20,774 INFO L231 Difference]: Finished difference. Result has 408 places, 611 transitions, 17407 flow [2024-11-27 20:24:20,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=16747, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17407, PETRI_PLACES=408, PETRI_TRANSITIONS=611} [2024-11-27 20:24:20,775 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 382 predicate places. [2024-11-27 20:24:20,775 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 611 transitions, 17407 flow [2024-11-27 20:24:20,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:20,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:20,775 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:20,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:24:20,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:20,976 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:20,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1298115112, now seen corresponding path program 8 times [2024-11-27 20:24:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553931008] [2024-11-27 20:24:20,976 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:21,008 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:21,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:21,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553931008] [2024-11-27 20:24:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553931008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:21,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:21,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:24:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735177630] [2024-11-27 20:24:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:21,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:24:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:21,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:24:21,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:21,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:21,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 611 transitions, 17407 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:21,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:21,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:21,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:25,257 INFO L124 PetriNetUnfolderBase]: 5720/10456 cut-off events. [2024-11-27 20:24:25,257 INFO L125 PetriNetUnfolderBase]: For 204552/204552 co-relation queries the response was YES. [2024-11-27 20:24:25,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90107 conditions, 10456 events. 5720/10456 cut-off events. For 204552/204552 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 78376 event pairs, 2680 based on Foata normal form. 5/10461 useless extension candidates. Maximal degree in co-relation 89999. Up to 7486 conditions per place. [2024-11-27 20:24:25,637 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 541 selfloop transitions, 106 changer transitions 5/653 dead transitions. [2024-11-27 20:24:25,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 653 transitions, 19016 flow [2024-11-27 20:24:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:24:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-27 20:24:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2024-11-27 20:24:25,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33163265306122447 [2024-11-27 20:24:25,638 INFO L175 Difference]: Start difference. First operand has 408 places, 611 transitions, 17407 flow. Second operand 14 states and 130 transitions. [2024-11-27 20:24:25,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 653 transitions, 19016 flow [2024-11-27 20:24:27,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 653 transitions, 18484 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-11-27 20:24:27,097 INFO L231 Difference]: Finished difference. Result has 412 places, 614 transitions, 17239 flow [2024-11-27 20:24:27,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=16854, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17239, PETRI_PLACES=412, PETRI_TRANSITIONS=614} [2024-11-27 20:24:27,098 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 386 predicate places. [2024-11-27 20:24:27,098 INFO L471 AbstractCegarLoop]: Abstraction has has 412 places, 614 transitions, 17239 flow [2024-11-27 20:24:27,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:27,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:27,099 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:27,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-27 20:24:27,099 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:27,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash -201223368, now seen corresponding path program 9 times [2024-11-27 20:24:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:27,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489680582] [2024-11-27 20:24:27,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:27,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:27,121 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:24:27,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:27,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:27,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489680582] [2024-11-27 20:24:27,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489680582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:27,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:27,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:24:27,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571205195] [2024-11-27 20:24:27,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:27,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:24:27,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:27,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:24:27,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:27,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:27,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 614 transitions, 17239 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:27,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:27,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:27,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:30,850 INFO L124 PetriNetUnfolderBase]: 5648/10326 cut-off events. [2024-11-27 20:24:30,850 INFO L125 PetriNetUnfolderBase]: For 200954/200954 co-relation queries the response was YES. [2024-11-27 20:24:30,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87587 conditions, 10326 events. 5648/10326 cut-off events. For 200954/200954 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 77244 event pairs, 2714 based on Foata normal form. 5/10331 useless extension candidates. Maximal degree in co-relation 87480. Up to 7633 conditions per place. [2024-11-27 20:24:30,999 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 549 selfloop transitions, 90 changer transitions 3/643 dead transitions. [2024-11-27 20:24:30,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 643 transitions, 18719 flow [2024-11-27 20:24:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:24:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:24:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-11-27 20:24:31,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-27 20:24:31,000 INFO L175 Difference]: Start difference. First operand has 412 places, 614 transitions, 17239 flow. Second operand 11 states and 112 transitions. [2024-11-27 20:24:31,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 643 transitions, 18719 flow [2024-11-27 20:24:32,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 643 transitions, 18528 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-11-27 20:24:32,824 INFO L231 Difference]: Finished difference. Result has 409 places, 610 transitions, 17126 flow [2024-11-27 20:24:32,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=16971, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17126, PETRI_PLACES=409, PETRI_TRANSITIONS=610} [2024-11-27 20:24:32,825 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 383 predicate places. [2024-11-27 20:24:32,825 INFO L471 AbstractCegarLoop]: Abstraction has has 409 places, 610 transitions, 17126 flow [2024-11-27 20:24:32,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:32,825 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:32,825 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:32,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-27 20:24:32,826 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:32,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash -798560026, now seen corresponding path program 10 times [2024-11-27 20:24:32,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:32,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030682466] [2024-11-27 20:24:32,827 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:32,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:32,847 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:32,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:32,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:32,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030682466] [2024-11-27 20:24:32,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030682466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:32,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:32,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:24:32,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823921698] [2024-11-27 20:24:32,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:32,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:24:32,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:32,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:24:32,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:24:32,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:32,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 610 transitions, 17126 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:32,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:32,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:32,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:37,623 INFO L124 PetriNetUnfolderBase]: 5851/10642 cut-off events. [2024-11-27 20:24:37,623 INFO L125 PetriNetUnfolderBase]: For 212232/212232 co-relation queries the response was YES. [2024-11-27 20:24:37,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91326 conditions, 10642 events. 5851/10642 cut-off events. For 212232/212232 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 79372 event pairs, 1249 based on Foata normal form. 5/10647 useless extension candidates. Maximal degree in co-relation 91219. Up to 2793 conditions per place. [2024-11-27 20:24:38,130 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 407 selfloop transitions, 273 changer transitions 4/685 dead transitions. [2024-11-27 20:24:38,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 685 transitions, 19443 flow [2024-11-27 20:24:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:24:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-27 20:24:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-11-27 20:24:38,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40561224489795916 [2024-11-27 20:24:38,131 INFO L175 Difference]: Start difference. First operand has 409 places, 610 transitions, 17126 flow. Second operand 14 states and 159 transitions. [2024-11-27 20:24:38,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 685 transitions, 19443 flow [2024-11-27 20:24:39,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 685 transitions, 19186 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-27 20:24:39,606 INFO L231 Difference]: Finished difference. Result has 414 places, 615 transitions, 17828 flow [2024-11-27 20:24:39,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=16687, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17828, PETRI_PLACES=414, PETRI_TRANSITIONS=615} [2024-11-27 20:24:39,607 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 388 predicate places. [2024-11-27 20:24:39,607 INFO L471 AbstractCegarLoop]: Abstraction has has 414 places, 615 transitions, 17828 flow [2024-11-27 20:24:39,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:39,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:39,607 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:39,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-27 20:24:39,607 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:39,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash 833601343, now seen corresponding path program 6 times [2024-11-27 20:24:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:39,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996534046] [2024-11-27 20:24:39,608 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:39,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:39,644 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-27 20:24:39,644 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996534046] [2024-11-27 20:24:39,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996534046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852034874] [2024-11-27 20:24:39,991 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:39,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:39,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:39,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:24:40,203 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-27 20:24:40,203 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:40,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:24:40,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:40,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:40,636 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-27 20:24:40,636 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 [2024-11-27 20:24:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:40,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852034874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:40,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:40,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 16 [2024-11-27 20:24:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735113582] [2024-11-27 20:24:40,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:40,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:24:40,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:40,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:24:40,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:24:40,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:40,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 615 transitions, 17828 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) [2024-11-27 20:24:40,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:40,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:40,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:44,937 INFO L124 PetriNetUnfolderBase]: 5651/10277 cut-off events. [2024-11-27 20:24:44,937 INFO L125 PetriNetUnfolderBase]: For 221908/221908 co-relation queries the response was YES. [2024-11-27 20:24:45,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90842 conditions, 10277 events. 5651/10277 cut-off events. For 221908/221908 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 76023 event pairs, 1209 based on Foata normal form. 45/10322 useless extension candidates. Maximal degree in co-relation 90733. Up to 3460 conditions per place. [2024-11-27 20:24:45,081 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 355 selfloop transitions, 360 changer transitions 1/717 dead transitions. [2024-11-27 20:24:45,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 717 transitions, 20374 flow [2024-11-27 20:24:45,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:24:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:24:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 203 transitions. [2024-11-27 20:24:45,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-11-27 20:24:45,082 INFO L175 Difference]: Start difference. First operand has 414 places, 615 transitions, 17828 flow. Second operand 18 states and 203 transitions. [2024-11-27 20:24:45,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 717 transitions, 20374 flow [2024-11-27 20:24:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 717 transitions, 20021 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-11-27 20:24:46,873 INFO L231 Difference]: Finished difference. Result has 422 places, 638 transitions, 19087 flow [2024-11-27 20:24:46,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=17322, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=19087, PETRI_PLACES=422, PETRI_TRANSITIONS=638} [2024-11-27 20:24:46,874 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 396 predicate places. [2024-11-27 20:24:46,874 INFO L471 AbstractCegarLoop]: Abstraction has has 422 places, 638 transitions, 19087 flow [2024-11-27 20:24:46,875 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) [2024-11-27 20:24:46,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:46,875 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:46,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:24:47,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-27 20:24:47,076 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:47,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:47,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1900035497, now seen corresponding path program 7 times [2024-11-27 20:24:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:47,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301959579] [2024-11-27 20:24:47,077 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:24:47,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:47,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:47,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301959579] [2024-11-27 20:24:47,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301959579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:47,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:47,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:24:47,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673125366] [2024-11-27 20:24:47,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:47,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:24:47,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:47,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:24:47,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:47,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:47,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 638 transitions, 19087 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:47,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:47,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:47,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:51,975 INFO L124 PetriNetUnfolderBase]: 5583/10129 cut-off events. [2024-11-27 20:24:51,976 INFO L125 PetriNetUnfolderBase]: For 227183/227183 co-relation queries the response was YES. [2024-11-27 20:24:52,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91506 conditions, 10129 events. 5583/10129 cut-off events. For 227183/227183 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 74542 event pairs, 2665 based on Foata normal form. 4/10133 useless extension candidates. Maximal degree in co-relation 91395. Up to 7975 conditions per place. [2024-11-27 20:24:52,518 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 516 selfloop transitions, 137 changer transitions 4/658 dead transitions. [2024-11-27 20:24:52,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 658 transitions, 20390 flow [2024-11-27 20:24:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:24:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:24:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-11-27 20:24:52,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3474025974025974 [2024-11-27 20:24:52,519 INFO L175 Difference]: Start difference. First operand has 422 places, 638 transitions, 19087 flow. Second operand 11 states and 107 transitions. [2024-11-27 20:24:52,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 658 transitions, 20390 flow [2024-11-27 20:24:54,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 658 transitions, 19911 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-11-27 20:24:54,261 INFO L231 Difference]: Finished difference. Result has 418 places, 634 transitions, 18760 flow [2024-11-27 20:24:54,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=18510, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18760, PETRI_PLACES=418, PETRI_TRANSITIONS=634} [2024-11-27 20:24:54,261 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 392 predicate places. [2024-11-27 20:24:54,262 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 634 transitions, 18760 flow [2024-11-27 20:24:54,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:54,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:54,262 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:54,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-27 20:24:54,262 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:24:54,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash -649236801, now seen corresponding path program 8 times [2024-11-27 20:24:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450439832] [2024-11-27 20:24:54,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:54,278 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:24:54,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:24:54,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450439832] [2024-11-27 20:24:54,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450439832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:54,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:54,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:24:54,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365856760] [2024-11-27 20:24:54,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:54,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:24:54,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:54,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:24:54,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:54,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:24:54,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 634 transitions, 18760 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:54,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:54,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:24:54,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:58,508 INFO L124 PetriNetUnfolderBase]: 5573/10111 cut-off events. [2024-11-27 20:24:58,508 INFO L125 PetriNetUnfolderBase]: For 221228/221228 co-relation queries the response was YES. [2024-11-27 20:24:58,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90313 conditions, 10111 events. 5573/10111 cut-off events. For 221228/221228 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 74411 event pairs, 2610 based on Foata normal form. 4/10115 useless extension candidates. Maximal degree in co-relation 90204. Up to 7963 conditions per place. [2024-11-27 20:24:58,726 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 496 selfloop transitions, 161 changer transitions 4/662 dead transitions. [2024-11-27 20:24:58,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 662 transitions, 20121 flow [2024-11-27 20:24:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:24:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:24:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-11-27 20:24:58,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-27 20:24:58,728 INFO L175 Difference]: Start difference. First operand has 418 places, 634 transitions, 18760 flow. Second operand 12 states and 116 transitions. [2024-11-27 20:24:58,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 662 transitions, 20121 flow [2024-11-27 20:25:00,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 662 transitions, 19969 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-27 20:25:00,909 INFO L231 Difference]: Finished difference. Result has 420 places, 631 transitions, 18828 flow [2024-11-27 20:25:00,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=18530, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=18828, PETRI_PLACES=420, PETRI_TRANSITIONS=631} [2024-11-27 20:25:00,910 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 394 predicate places. [2024-11-27 20:25:00,911 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 631 transitions, 18828 flow [2024-11-27 20:25:00,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:00,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:00,911 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:00,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-27 20:25:00,911 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:25:00,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash -187528727, now seen corresponding path program 9 times [2024-11-27 20:25:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:00,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069588753] [2024-11-27 20:25:00,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:25:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:00,944 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:25:00,944 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:25:01,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:01,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069588753] [2024-11-27 20:25:01,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069588753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:01,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417098095] [2024-11-27 20:25:01,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:25:01,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:01,332 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:01,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e9163cf-df85-499b-a048-bb510438fb40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:25:01,538 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:25:01,538 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:01,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:25:01,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:01,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:25:01,679 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 118 treesize of output 70 [2024-11-27 20:25:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:25:01,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:01,851 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-27 20:25:01,851 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 111 treesize of output 95 [2024-11-27 20:25:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:25:02,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417098095] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:02,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:25:02,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-11-27 20:25:02,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032964068] [2024-11-27 20:25:02,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:02,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:25:02,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:02,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:25:02,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:25:02,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-27 20:25:02,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 631 transitions, 18828 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:02,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:02,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-27 20:25:02,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand