./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC --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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:48:19,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:48:19,111 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:48:19,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:48:19,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:48:19,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:48:19,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:48:19,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:48:19,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:48:19,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:48:19,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:48:19,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:48:19,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:48:19,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:48:19,146 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:48:19,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:48:19,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:48:19,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:48:19,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:48:19,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:48:19,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:48:19,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:48:19,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:48:19,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:48:19,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:48:19,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:48:19,148 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:48:19,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:48:19,148 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:48:19,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:48:19,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:48:19,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:48:19,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:48:19,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:48:19,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:48:19,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:48:19,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:48:19,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:48:19,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:48:19,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:48:19,150 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:48:19,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:48:19,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:48:19,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:48:19,150 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:48:19,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:48:19,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:48:19,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:48:19,151 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_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC 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 -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-24 01:48:19,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:48:19,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:48:19,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:48:19,521 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:48:19,521 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:48:19,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-24 01:48:22,510 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/data/f0318b341/96baa8e40e5145ec86650d76f9cc6059/FLAGc3a449863 [2024-11-24 01:48:22,832 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:48:22,833 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-24 01:48:22,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/data/f0318b341/96baa8e40e5145ec86650d76f9cc6059/FLAGc3a449863 [2024-11-24 01:48:23,076 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/data/f0318b341/96baa8e40e5145ec86650d76f9cc6059 [2024-11-24 01:48:23,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:48:23,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:48:23,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:48:23,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:48:23,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:48:23,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1470fa6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23, skipping insertion in model container [2024-11-24 01:48:23,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,119 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:48:23,354 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_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2024-11-24 01:48:23,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:48:23,375 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:48:23,405 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_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2024-11-24 01:48:23,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:48:23,430 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:48:23,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23 WrapperNode [2024-11-24 01:48:23,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:48:23,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:48:23,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:48:23,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:48:23,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,486 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 247 [2024-11-24 01:48:23,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:48:23,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:48:23,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:48:23,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:48:23,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,537 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2024-11-24 01:48:23,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,547 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:48:23,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:48:23,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:48:23,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:48:23,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (1/1) ... [2024-11-24 01:48:23,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:48:23,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:48:23,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:48:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:48:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:48:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 01:48:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 01:48:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 01:48:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 01:48:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 01:48:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 01:48:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:48:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:48:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:48:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:48:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 01:48:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 01:48:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:48:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:48:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:48:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:48:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:48:23,642 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:48:23,814 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:48:23,816 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:48:24,356 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:48:24,356 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:48:24,826 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:48:24,826 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-24 01:48:24,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:48:24 BoogieIcfgContainer [2024-11-24 01:48:24,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:48:24,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:48:24,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:48:24,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:48:24,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:48:23" (1/3) ... [2024-11-24 01:48:24,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b223887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:48:24, skipping insertion in model container [2024-11-24 01:48:24,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:23" (2/3) ... [2024-11-24 01:48:24,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b223887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:48:24, skipping insertion in model container [2024-11-24 01:48:24,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:48:24" (3/3) ... [2024-11-24 01:48:24,838 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-24 01:48:24,855 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:48:24,856 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-24 01:48:24,857 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:48:24,935 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-24 01:48:24,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 109 flow [2024-11-24 01:48:25,024 INFO L124 PetriNetUnfolderBase]: 9/41 cut-off events. [2024-11-24 01:48:25,028 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 01:48:25,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 9/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2024-11-24 01:48:25,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 109 flow [2024-11-24 01:48:25,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 40 transitions, 98 flow [2024-11-24 01:48:25,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:48:25,069 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;@6dafbb07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:48:25,069 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-24 01:48:25,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:48:25,093 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-11-24 01:48:25,093 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 01:48:25,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:25,098 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:25,099 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:25,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1349858538, now seen corresponding path program 1 times [2024-11-24 01:48:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:25,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499240043] [2024-11-24 01:48:25,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:25,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:25,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499240043] [2024-11-24 01:48:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499240043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:25,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:48:25,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720211867] [2024-11-24 01:48:25,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:25,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:48:25,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:25,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:48:25,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:48:25,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:48:25,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:25,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:25,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:48:25,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:25,970 INFO L124 PetriNetUnfolderBase]: 1088/1694 cut-off events. [2024-11-24 01:48:25,971 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-11-24 01:48:25,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3273 conditions, 1694 events. 1088/1694 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7397 event pairs, 892 based on Foata normal form. 0/1559 useless extension candidates. Maximal degree in co-relation 3037. Up to 1453 conditions per place. [2024-11-24 01:48:26,003 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 30 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-11-24 01:48:26,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 150 flow [2024-11-24 01:48:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:48:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-24 01:48:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 52 transitions. [2024-11-24 01:48:26,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-24 01:48:26,023 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 98 flow. Second operand 2 states and 52 transitions. [2024-11-24 01:48:26,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 150 flow [2024-11-24 01:48:26,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-24 01:48:26,037 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 78 flow [2024-11-24 01:48:26,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2024-11-24 01:48:26,047 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2024-11-24 01:48:26,047 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 78 flow [2024-11-24 01:48:26,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:26,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:26,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:26,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:48:26,049 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:26,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:26,050 INFO L85 PathProgramCache]: Analyzing trace with hash 704685605, now seen corresponding path program 1 times [2024-11-24 01:48:26,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:26,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355435819] [2024-11-24 01:48:26,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:26,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355435819] [2024-11-24 01:48:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355435819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:48:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430997553] [2024-11-24 01:48:26,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:26,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:48:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:26,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:48:26,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:48:26,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:48:26,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-11-24 01:48:26,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:26,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:48:26,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:27,193 INFO L124 PetriNetUnfolderBase]: 1209/1910 cut-off events. [2024-11-24 01:48:27,194 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-24 01:48:27,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3609 conditions, 1910 events. 1209/1910 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8599 event pairs, 999 based on Foata normal form. 87/1847 useless extension candidates. Maximal degree in co-relation 3606. Up to 1453 conditions per place. [2024-11-24 01:48:27,213 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 29 selfloop transitions, 2 changer transitions 18/55 dead transitions. [2024-11-24 01:48:27,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 217 flow [2024-11-24 01:48:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:48:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:48:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-24 01:48:27,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-11-24 01:48:27,216 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 78 flow. Second operand 5 states and 97 transitions. [2024-11-24 01:48:27,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 217 flow [2024-11-24 01:48:27,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:48:27,220 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 100 flow [2024-11-24 01:48:27,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-24 01:48:27,221 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-24 01:48:27,221 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 100 flow [2024-11-24 01:48:27,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-11-24 01:48:27,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:27,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:27,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:48:27,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:27,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:27,228 INFO L85 PathProgramCache]: Analyzing trace with hash -477130932, now seen corresponding path program 1 times [2024-11-24 01:48:27,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:27,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997232943] [2024-11-24 01:48:27,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:27,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:48:27,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:27,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997232943] [2024-11-24 01:48:27,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997232943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:27,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:27,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:48:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400197902] [2024-11-24 01:48:27,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:27,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:48:27,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:27,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:48:27,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:48:27,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:48:27,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:27,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:27,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:48:27,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:27,925 INFO L124 PetriNetUnfolderBase]: 1288/2024 cut-off events. [2024-11-24 01:48:27,926 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2024-11-24 01:48:27,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4192 conditions, 2024 events. 1288/2024 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9200 event pairs, 1072 based on Foata normal form. 77/1964 useless extension candidates. Maximal degree in co-relation 4185. Up to 1454 conditions per place. [2024-11-24 01:48:27,939 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 30 selfloop transitions, 2 changer transitions 17/55 dead transitions. [2024-11-24 01:48:27,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 248 flow [2024-11-24 01:48:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:48:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:48:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-24 01:48:27,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-11-24 01:48:27,941 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 100 flow. Second operand 4 states and 86 transitions. [2024-11-24 01:48:27,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 248 flow [2024-11-24 01:48:27,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 236 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-24 01:48:27,944 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 108 flow [2024-11-24 01:48:27,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-11-24 01:48:27,945 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-11-24 01:48:27,945 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 108 flow [2024-11-24 01:48:27,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:27,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:27,946 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:27,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:48:27,946 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:27,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:27,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1979627237, now seen corresponding path program 1 times [2024-11-24 01:48:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:27,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976459488] [2024-11-24 01:48:27,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:27,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:29,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976459488] [2024-11-24 01:48:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976459488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:29,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:29,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491254721] [2024-11-24 01:48:29,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:29,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:29,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:29,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:29,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:29,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 108 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:29,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:29,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:29,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:30,912 INFO L124 PetriNetUnfolderBase]: 1957/3008 cut-off events. [2024-11-24 01:48:30,913 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2024-11-24 01:48:30,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 3008 events. 1957/3008 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14663 event pairs, 73 based on Foata normal form. 1/2942 useless extension candidates. Maximal degree in co-relation 6585. Up to 1861 conditions per place. [2024-11-24 01:48:30,935 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 102 selfloop transitions, 27 changer transitions 3/137 dead transitions. [2024-11-24 01:48:30,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 137 transitions, 645 flow [2024-11-24 01:48:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:48:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:48:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-11-24 01:48:30,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42992424242424243 [2024-11-24 01:48:30,940 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 108 flow. Second operand 12 states and 227 transitions. [2024-11-24 01:48:30,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 137 transitions, 645 flow [2024-11-24 01:48:30,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 137 transitions, 641 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-24 01:48:30,946 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 256 flow [2024-11-24 01:48:30,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=256, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2024-11-24 01:48:30,947 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-11-24 01:48:30,948 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 256 flow [2024-11-24 01:48:30,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:30,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:30,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:30,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:48:30,949 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:30,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:30,950 INFO L85 PathProgramCache]: Analyzing trace with hash 906157947, now seen corresponding path program 2 times [2024-11-24 01:48:30,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:30,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400730885] [2024-11-24 01:48:30,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:48:30,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:30,976 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:48:30,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400730885] [2024-11-24 01:48:31,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400730885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:31,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:31,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:48:31,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656300628] [2024-11-24 01:48:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:31,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:48:31,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:31,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:48:31,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:31,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:48:31,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:31,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:31,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:48:31,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:31,403 INFO L124 PetriNetUnfolderBase]: 1518/2409 cut-off events. [2024-11-24 01:48:31,404 INFO L125 PetriNetUnfolderBase]: For 1580/1601 co-relation queries the response was YES. [2024-11-24 01:48:31,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6579 conditions, 2409 events. 1518/2409 cut-off events. For 1580/1601 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11669 event pairs, 388 based on Foata normal form. 47/2398 useless extension candidates. Maximal degree in co-relation 6565. Up to 1891 conditions per place. [2024-11-24 01:48:31,426 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 69 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-24 01:48:31,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 458 flow [2024-11-24 01:48:31,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:48:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:48:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-24 01:48:31,427 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-11-24 01:48:31,427 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 256 flow. Second operand 3 states and 71 transitions. [2024-11-24 01:48:31,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 458 flow [2024-11-24 01:48:31,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:48:31,433 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 272 flow [2024-11-24 01:48:31,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-24 01:48:31,435 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-11-24 01:48:31,435 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 272 flow [2024-11-24 01:48:31,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:31,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:31,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:31,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:48:31,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:31,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 729921353, now seen corresponding path program 3 times [2024-11-24 01:48:31,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809361997] [2024-11-24 01:48:31,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:48:31,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:31,454 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 01:48:31,455 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:31,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809361997] [2024-11-24 01:48:31,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809361997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:31,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:31,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:48:31,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403199745] [2024-11-24 01:48:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:31,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:48:31,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:31,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:48:31,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:31,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:48:31,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:31,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:31,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:48:31,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:31,847 INFO L124 PetriNetUnfolderBase]: 1174/1924 cut-off events. [2024-11-24 01:48:31,847 INFO L125 PetriNetUnfolderBase]: For 1902/1903 co-relation queries the response was YES. [2024-11-24 01:48:31,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 1924 events. 1174/1924 cut-off events. For 1902/1903 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9251 event pairs, 434 based on Foata normal form. 86/1971 useless extension candidates. Maximal degree in co-relation 5581. Up to 1147 conditions per place. [2024-11-24 01:48:31,863 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 70 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-11-24 01:48:31,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 482 flow [2024-11-24 01:48:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:48:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:48:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-24 01:48:31,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-11-24 01:48:31,864 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 272 flow. Second operand 3 states and 70 transitions. [2024-11-24 01:48:31,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 482 flow [2024-11-24 01:48:31,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 459 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-24 01:48:31,873 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 260 flow [2024-11-24 01:48:31,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2024-11-24 01:48:31,875 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-11-24 01:48:31,876 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 260 flow [2024-11-24 01:48:31,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:31,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:31,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:31,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:48:31,876 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:31,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1689641101, now seen corresponding path program 4 times [2024-11-24 01:48:31,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:31,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232165411] [2024-11-24 01:48:31,878 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:48:31,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:31,943 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:48:31,944 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232165411] [2024-11-24 01:48:33,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232165411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:33,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:33,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:33,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621044143] [2024-11-24 01:48:33,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:33,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:33,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:33,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:33,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 44 [2024-11-24 01:48:33,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 260 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:33,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:33,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 44 [2024-11-24 01:48:33,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:33,960 INFO L124 PetriNetUnfolderBase]: 1670/2678 cut-off events. [2024-11-24 01:48:33,961 INFO L125 PetriNetUnfolderBase]: For 2133/2133 co-relation queries the response was YES. [2024-11-24 01:48:33,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7586 conditions, 2678 events. 1670/2678 cut-off events. For 2133/2133 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13578 event pairs, 352 based on Foata normal form. 1/2615 useless extension candidates. Maximal degree in co-relation 7571. Up to 1967 conditions per place. [2024-11-24 01:48:33,981 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 103 selfloop transitions, 29 changer transitions 3/139 dead transitions. [2024-11-24 01:48:33,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 139 transitions, 840 flow [2024-11-24 01:48:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-11-24 01:48:33,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40289256198347106 [2024-11-24 01:48:33,983 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 260 flow. Second operand 11 states and 195 transitions. [2024-11-24 01:48:33,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 139 transitions, 840 flow [2024-11-24 01:48:33,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 139 transitions, 821 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-24 01:48:33,989 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 429 flow [2024-11-24 01:48:33,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=429, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-11-24 01:48:33,989 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-11-24 01:48:33,990 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 429 flow [2024-11-24 01:48:33,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:33,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:33,990 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:33,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:48:33,991 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:33,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash -819679853, now seen corresponding path program 5 times [2024-11-24 01:48:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814737973] [2024-11-24 01:48:33,992 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:48:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:34,026 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:48:34,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814737973] [2024-11-24 01:48:34,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814737973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:34,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:34,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755240377] [2024-11-24 01:48:34,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:34,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:34,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:34,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:34,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:34,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 429 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:34,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:34,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:34,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:35,958 INFO L124 PetriNetUnfolderBase]: 1572/2572 cut-off events. [2024-11-24 01:48:35,958 INFO L125 PetriNetUnfolderBase]: For 3736/3736 co-relation queries the response was YES. [2024-11-24 01:48:35,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8096 conditions, 2572 events. 1572/2572 cut-off events. For 3736/3736 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13271 event pairs, 420 based on Foata normal form. 1/2506 useless extension candidates. Maximal degree in co-relation 8076. Up to 1912 conditions per place. [2024-11-24 01:48:35,987 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 105 selfloop transitions, 34 changer transitions 3/147 dead transitions. [2024-11-24 01:48:35,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 147 transitions, 1019 flow [2024-11-24 01:48:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-11-24 01:48:35,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41735537190082644 [2024-11-24 01:48:35,989 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 429 flow. Second operand 11 states and 202 transitions. [2024-11-24 01:48:35,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 147 transitions, 1019 flow [2024-11-24 01:48:36,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 147 transitions, 988 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-24 01:48:36,007 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 624 flow [2024-11-24 01:48:36,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=624, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2024-11-24 01:48:36,010 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-11-24 01:48:36,011 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 624 flow [2024-11-24 01:48:36,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:36,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:36,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:36,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:48:36,012 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:36,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 638093865, now seen corresponding path program 6 times [2024-11-24 01:48:36,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:36,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276145573] [2024-11-24 01:48:36,013 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:48:36,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:36,068 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 01:48:36,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:37,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:37,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276145573] [2024-11-24 01:48:37,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276145573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:37,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:37,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:37,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131781272] [2024-11-24 01:48:37,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:37,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:37,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:37,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:37,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:37,138 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:37,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 624 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:37,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:37,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:37,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:37,949 INFO L124 PetriNetUnfolderBase]: 1683/2789 cut-off events. [2024-11-24 01:48:37,949 INFO L125 PetriNetUnfolderBase]: For 5744/5744 co-relation queries the response was YES. [2024-11-24 01:48:37,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9448 conditions, 2789 events. 1683/2789 cut-off events. For 5744/5744 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14965 event pairs, 314 based on Foata normal form. 1/2716 useless extension candidates. Maximal degree in co-relation 9420. Up to 1960 conditions per place. [2024-11-24 01:48:37,976 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 117 selfloop transitions, 41 changer transitions 3/166 dead transitions. [2024-11-24 01:48:37,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 166 transitions, 1249 flow [2024-11-24 01:48:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:48:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:48:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-11-24 01:48:37,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4185606060606061 [2024-11-24 01:48:37,978 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 624 flow. Second operand 12 states and 221 transitions. [2024-11-24 01:48:37,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 166 transitions, 1249 flow [2024-11-24 01:48:37,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 166 transitions, 1217 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-24 01:48:37,995 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 749 flow [2024-11-24 01:48:37,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=749, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2024-11-24 01:48:37,996 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-11-24 01:48:37,996 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 749 flow [2024-11-24 01:48:37,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:37,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:37,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:37,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:48:37,997 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:37,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:37,997 INFO L85 PathProgramCache]: Analyzing trace with hash 765825289, now seen corresponding path program 7 times [2024-11-24 01:48:37,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:37,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353276149] [2024-11-24 01:48:37,998 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:48:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:38,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:38,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353276149] [2024-11-24 01:48:38,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353276149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:38,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:38,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:38,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446885230] [2024-11-24 01:48:38,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:38,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:38,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:38,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:38,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:38,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:38,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 749 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:38,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:38,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:38,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:39,777 INFO L124 PetriNetUnfolderBase]: 1683/2787 cut-off events. [2024-11-24 01:48:39,777 INFO L125 PetriNetUnfolderBase]: For 7992/7992 co-relation queries the response was YES. [2024-11-24 01:48:39,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 2787 events. 1683/2787 cut-off events. For 7992/7992 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14927 event pairs, 334 based on Foata normal form. 1/2714 useless extension candidates. Maximal degree in co-relation 9959. Up to 2044 conditions per place. [2024-11-24 01:48:39,803 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 113 selfloop transitions, 40 changer transitions 3/161 dead transitions. [2024-11-24 01:48:39,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 161 transitions, 1325 flow [2024-11-24 01:48:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:48:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:48:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-11-24 01:48:39,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-11-24 01:48:39,806 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 749 flow. Second operand 12 states and 212 transitions. [2024-11-24 01:48:39,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 161 transitions, 1325 flow [2024-11-24 01:48:39,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 161 transitions, 1232 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-11-24 01:48:39,827 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 781 flow [2024-11-24 01:48:39,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=781, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2024-11-24 01:48:39,828 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-11-24 01:48:39,828 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 781 flow [2024-11-24 01:48:39,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:39,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:39,828 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:39,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:48:39,829 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:39,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:39,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1997955989, now seen corresponding path program 8 times [2024-11-24 01:48:39,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:39,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189576016] [2024-11-24 01:48:39,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:48:39,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:39,866 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:48:39,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:40,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:40,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189576016] [2024-11-24 01:48:40,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189576016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:40,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:40,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:40,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397082053] [2024-11-24 01:48:40,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:40,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:40,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:40,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:40,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:40,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 781 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:40,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:40,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:40,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:41,763 INFO L124 PetriNetUnfolderBase]: 1818/2999 cut-off events. [2024-11-24 01:48:41,764 INFO L125 PetriNetUnfolderBase]: For 9356/9356 co-relation queries the response was YES. [2024-11-24 01:48:41,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11026 conditions, 2999 events. 1818/2999 cut-off events. For 9356/9356 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16393 event pairs, 356 based on Foata normal form. 1/2914 useless extension candidates. Maximal degree in co-relation 10991. Up to 1988 conditions per place. [2024-11-24 01:48:41,797 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 124 selfloop transitions, 48 changer transitions 3/180 dead transitions. [2024-11-24 01:48:41,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 1502 flow [2024-11-24 01:48:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:48:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:48:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-11-24 01:48:41,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-11-24 01:48:41,801 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 781 flow. Second operand 12 states and 225 transitions. [2024-11-24 01:48:41,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 1502 flow [2024-11-24 01:48:41,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 180 transitions, 1412 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-24 01:48:41,830 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 906 flow [2024-11-24 01:48:41,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=906, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-11-24 01:48:41,831 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-11-24 01:48:41,832 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 906 flow [2024-11-24 01:48:41,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:41,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:41,832 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:41,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:48:41,832 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:41,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash -39894083, now seen corresponding path program 9 times [2024-11-24 01:48:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788167789] [2024-11-24 01:48:41,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:48:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:41,877 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 01:48:41,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788167789] [2024-11-24 01:48:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788167789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:42,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635337858] [2024-11-24 01:48:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:42,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:42,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:42,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:42,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:42,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 906 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:42,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:42,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:42,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:43,784 INFO L124 PetriNetUnfolderBase]: 1941/3244 cut-off events. [2024-11-24 01:48:43,785 INFO L125 PetriNetUnfolderBase]: For 12619/12619 co-relation queries the response was YES. [2024-11-24 01:48:43,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12376 conditions, 3244 events. 1941/3244 cut-off events. For 12619/12619 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18340 event pairs, 566 based on Foata normal form. 1/3158 useless extension candidates. Maximal degree in co-relation 12337. Up to 2528 conditions per place. [2024-11-24 01:48:43,814 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 129 selfloop transitions, 36 changer transitions 3/173 dead transitions. [2024-11-24 01:48:43,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 173 transitions, 1593 flow [2024-11-24 01:48:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-11-24 01:48:43,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-24 01:48:43,816 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 906 flow. Second operand 11 states and 198 transitions. [2024-11-24 01:48:43,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 173 transitions, 1593 flow [2024-11-24 01:48:43,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 173 transitions, 1488 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-11-24 01:48:43,852 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 1020 flow [2024-11-24 01:48:43,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1020, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2024-11-24 01:48:43,854 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-11-24 01:48:43,856 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 1020 flow [2024-11-24 01:48:43,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:43,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:43,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:43,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:48:43,857 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:43,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1239444533, now seen corresponding path program 10 times [2024-11-24 01:48:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:43,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494096943] [2024-11-24 01:48:43,858 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:48:43,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:43,904 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:48:43,904 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:44,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:44,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494096943] [2024-11-24 01:48:44,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494096943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:44,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:44,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:44,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884682714] [2024-11-24 01:48:44,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:44,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:44,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:44,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:44,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:44,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 44 [2024-11-24 01:48:44,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 1020 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:44,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:44,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 44 [2024-11-24 01:48:44,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:45,630 INFO L124 PetriNetUnfolderBase]: 2271/3731 cut-off events. [2024-11-24 01:48:45,630 INFO L125 PetriNetUnfolderBase]: For 20396/20404 co-relation queries the response was YES. [2024-11-24 01:48:45,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15018 conditions, 3731 events. 2271/3731 cut-off events. For 20396/20404 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 21428 event pairs, 727 based on Foata normal form. 3/3651 useless extension candidates. Maximal degree in co-relation 14974. Up to 2974 conditions per place. [2024-11-24 01:48:45,663 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 142 selfloop transitions, 36 changer transitions 3/185 dead transitions. [2024-11-24 01:48:45,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 185 transitions, 1779 flow [2024-11-24 01:48:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-11-24 01:48:45,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39462809917355374 [2024-11-24 01:48:45,665 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 1020 flow. Second operand 11 states and 191 transitions. [2024-11-24 01:48:45,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 185 transitions, 1779 flow [2024-11-24 01:48:45,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 185 transitions, 1667 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-11-24 01:48:45,712 INFO L231 Difference]: Finished difference. Result has 130 places, 128 transitions, 1124 flow [2024-11-24 01:48:45,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1124, PETRI_PLACES=130, PETRI_TRANSITIONS=128} [2024-11-24 01:48:45,712 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-11-24 01:48:45,713 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 128 transitions, 1124 flow [2024-11-24 01:48:45,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:45,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:45,713 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:45,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:48:45,713 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:45,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash 805285495, now seen corresponding path program 11 times [2024-11-24 01:48:45,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:45,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604830502] [2024-11-24 01:48:45,714 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:48:45,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:45,738 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:48:45,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:46,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604830502] [2024-11-24 01:48:46,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604830502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:46,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:46,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:46,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17388715] [2024-11-24 01:48:46,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:46,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:46,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:46,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:46,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:46,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 128 transitions, 1124 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:46,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:46,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:46,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:47,443 INFO L124 PetriNetUnfolderBase]: 2239/3729 cut-off events. [2024-11-24 01:48:47,444 INFO L125 PetriNetUnfolderBase]: For 25119/25135 co-relation queries the response was YES. [2024-11-24 01:48:47,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15815 conditions, 3729 events. 2239/3729 cut-off events. For 25119/25135 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21940 event pairs, 687 based on Foata normal form. 1/3647 useless extension candidates. Maximal degree in co-relation 15767. Up to 2941 conditions per place. [2024-11-24 01:48:47,486 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 148 selfloop transitions, 37 changer transitions 3/193 dead transitions. [2024-11-24 01:48:47,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 193 transitions, 1920 flow [2024-11-24 01:48:47,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-11-24 01:48:47,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4194214876033058 [2024-11-24 01:48:47,488 INFO L175 Difference]: Start difference. First operand has 130 places, 128 transitions, 1124 flow. Second operand 11 states and 203 transitions. [2024-11-24 01:48:47,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 193 transitions, 1920 flow [2024-11-24 01:48:47,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 193 transitions, 1788 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-11-24 01:48:47,554 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 1214 flow [2024-11-24 01:48:47,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2024-11-24 01:48:47,555 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-11-24 01:48:47,555 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 1214 flow [2024-11-24 01:48:47,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:47,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:47,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:47,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:48:47,556 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:47,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:47,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1073113797, now seen corresponding path program 12 times [2024-11-24 01:48:47,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:47,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843487088] [2024-11-24 01:48:47,557 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:48:47,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:47,581 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 01:48:47,582 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:48,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:48,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843487088] [2024-11-24 01:48:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843487088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:48,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:48,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885332019] [2024-11-24 01:48:48,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:48,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:48,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:48,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:48,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:48,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 1214 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:48,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:48,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:48,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:49,446 INFO L124 PetriNetUnfolderBase]: 2390/3993 cut-off events. [2024-11-24 01:48:49,446 INFO L125 PetriNetUnfolderBase]: For 31063/31063 co-relation queries the response was YES. [2024-11-24 01:48:49,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17313 conditions, 3993 events. 2390/3993 cut-off events. For 31063/31063 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 23905 event pairs, 795 based on Foata normal form. 1/3905 useless extension candidates. Maximal degree in co-relation 17261. Up to 3194 conditions per place. [2024-11-24 01:48:49,500 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 153 selfloop transitions, 37 changer transitions 3/198 dead transitions. [2024-11-24 01:48:49,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 198 transitions, 2038 flow [2024-11-24 01:48:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-11-24 01:48:49,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4152892561983471 [2024-11-24 01:48:49,503 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 1214 flow. Second operand 11 states and 201 transitions. [2024-11-24 01:48:49,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 198 transitions, 2038 flow [2024-11-24 01:48:49,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 198 transitions, 1910 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-11-24 01:48:49,587 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 1326 flow [2024-11-24 01:48:49,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1326, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-11-24 01:48:49,588 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-11-24 01:48:49,588 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 1326 flow [2024-11-24 01:48:49,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:49,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:49,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:49,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:48:49,589 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:49,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash -680406085, now seen corresponding path program 13 times [2024-11-24 01:48:49,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:49,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274215395] [2024-11-24 01:48:49,590 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:48:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:50,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274215395] [2024-11-24 01:48:50,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274215395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:50,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:50,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661555774] [2024-11-24 01:48:50,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:50,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:50,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:50,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:50,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:50,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 1326 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:50,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:50,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:50,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:51,212 INFO L124 PetriNetUnfolderBase]: 2390/3987 cut-off events. [2024-11-24 01:48:51,213 INFO L125 PetriNetUnfolderBase]: For 34982/34990 co-relation queries the response was YES. [2024-11-24 01:48:51,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17611 conditions, 3987 events. 2390/3987 cut-off events. For 34982/34990 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23921 event pairs, 812 based on Foata normal form. 3/3903 useless extension candidates. Maximal degree in co-relation 17555. Up to 3258 conditions per place. [2024-11-24 01:48:51,236 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 152 selfloop transitions, 37 changer transitions 4/198 dead transitions. [2024-11-24 01:48:51,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 198 transitions, 2029 flow [2024-11-24 01:48:51,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-11-24 01:48:51,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40702479338842973 [2024-11-24 01:48:51,239 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 1326 flow. Second operand 11 states and 197 transitions. [2024-11-24 01:48:51,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 198 transitions, 2029 flow [2024-11-24 01:48:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 198 transitions, 1885 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-11-24 01:48:51,302 INFO L231 Difference]: Finished difference. Result has 151 places, 146 transitions, 1307 flow [2024-11-24 01:48:51,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=151, PETRI_TRANSITIONS=146} [2024-11-24 01:48:51,303 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-11-24 01:48:51,303 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 146 transitions, 1307 flow [2024-11-24 01:48:51,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:51,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:51,304 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:51,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:48:51,304 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:51,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:51,305 INFO L85 PathProgramCache]: Analyzing trace with hash 539721821, now seen corresponding path program 14 times [2024-11-24 01:48:51,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:51,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005803871] [2024-11-24 01:48:51,305 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:48:51,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:51,336 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:48:51,337 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005803871] [2024-11-24 01:48:51,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005803871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:51,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:51,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:51,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624518180] [2024-11-24 01:48:51,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:51,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:51,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:51,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:51,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:51,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:51,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 1307 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:51,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:51,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:51,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:52,870 INFO L124 PetriNetUnfolderBase]: 2451/4089 cut-off events. [2024-11-24 01:48:52,871 INFO L125 PetriNetUnfolderBase]: For 32552/32574 co-relation queries the response was YES. [2024-11-24 01:48:52,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17631 conditions, 4089 events. 2451/4089 cut-off events. For 32552/32574 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 24773 event pairs, 871 based on Foata normal form. 11/4014 useless extension candidates. Maximal degree in co-relation 17572. Up to 3407 conditions per place. [2024-11-24 01:48:52,910 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 153 selfloop transitions, 36 changer transitions 4/198 dead transitions. [2024-11-24 01:48:52,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 198 transitions, 1970 flow [2024-11-24 01:48:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-11-24 01:48:52,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3925619834710744 [2024-11-24 01:48:52,912 INFO L175 Difference]: Start difference. First operand has 151 places, 146 transitions, 1307 flow. Second operand 11 states and 190 transitions. [2024-11-24 01:48:52,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 198 transitions, 1970 flow [2024-11-24 01:48:52,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 198 transitions, 1866 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-24 01:48:52,970 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 1349 flow [2024-11-24 01:48:52,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1349, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2024-11-24 01:48:52,971 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-11-24 01:48:52,971 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 1349 flow [2024-11-24 01:48:52,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:52,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:52,971 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:52,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:48:52,972 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:52,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1195152813, now seen corresponding path program 15 times [2024-11-24 01:48:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:52,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942214791] [2024-11-24 01:48:52,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:48:52,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:52,995 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 01:48:52,995 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942214791] [2024-11-24 01:48:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942214791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:53,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:53,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:53,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118572359] [2024-11-24 01:48:53,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:53,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:53,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:53,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:53,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:53,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:53,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 1349 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:53,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:53,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:53,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:54,452 INFO L124 PetriNetUnfolderBase]: 2487/4170 cut-off events. [2024-11-24 01:48:54,452 INFO L125 PetriNetUnfolderBase]: For 32508/32530 co-relation queries the response was YES. [2024-11-24 01:48:54,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17808 conditions, 4170 events. 2487/4170 cut-off events. For 32508/32530 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25616 event pairs, 871 based on Foata normal form. 19/4091 useless extension candidates. Maximal degree in co-relation 17746. Up to 3493 conditions per place. [2024-11-24 01:48:54,497 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 156 selfloop transitions, 37 changer transitions 3/201 dead transitions. [2024-11-24 01:48:54,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 201 transitions, 1997 flow [2024-11-24 01:48:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-11-24 01:48:54,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3925619834710744 [2024-11-24 01:48:54,499 INFO L175 Difference]: Start difference. First operand has 156 places, 152 transitions, 1349 flow. Second operand 11 states and 190 transitions. [2024-11-24 01:48:54,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 201 transitions, 1997 flow [2024-11-24 01:48:54,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 201 transitions, 1900 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-11-24 01:48:54,573 INFO L231 Difference]: Finished difference. Result has 161 places, 155 transitions, 1376 flow [2024-11-24 01:48:54,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1376, PETRI_PLACES=161, PETRI_TRANSITIONS=155} [2024-11-24 01:48:54,574 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 120 predicate places. [2024-11-24 01:48:54,574 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 155 transitions, 1376 flow [2024-11-24 01:48:54,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:54,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:54,574 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:54,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:48:54,574 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:54,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -957394559, now seen corresponding path program 16 times [2024-11-24 01:48:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:54,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832776591] [2024-11-24 01:48:54,575 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:48:54,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:54,602 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:48:54,603 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:55,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832776591] [2024-11-24 01:48:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832776591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:55,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:55,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545757035] [2024-11-24 01:48:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:55,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:55,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:55,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:55,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 44 [2024-11-24 01:48:55,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 155 transitions, 1376 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:55,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:55,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 44 [2024-11-24 01:48:55,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:56,284 INFO L124 PetriNetUnfolderBase]: 2685/4446 cut-off events. [2024-11-24 01:48:56,284 INFO L125 PetriNetUnfolderBase]: For 35646/35668 co-relation queries the response was YES. [2024-11-24 01:48:56,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18980 conditions, 4446 events. 2685/4446 cut-off events. For 35646/35668 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27049 event pairs, 981 based on Foata normal form. 11/4356 useless extension candidates. Maximal degree in co-relation 18916. Up to 3748 conditions per place. [2024-11-24 01:48:56,334 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 160 selfloop transitions, 35 changer transitions 3/202 dead transitions. [2024-11-24 01:48:56,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 202 transitions, 2004 flow [2024-11-24 01:48:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-11-24 01:48:56,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3677685950413223 [2024-11-24 01:48:56,335 INFO L175 Difference]: Start difference. First operand has 161 places, 155 transitions, 1376 flow. Second operand 11 states and 178 transitions. [2024-11-24 01:48:56,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 202 transitions, 2004 flow [2024-11-24 01:48:56,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 202 transitions, 1898 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-24 01:48:56,429 INFO L231 Difference]: Finished difference. Result has 165 places, 157 transitions, 1366 flow [2024-11-24 01:48:56,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1366, PETRI_PLACES=165, PETRI_TRANSITIONS=157} [2024-11-24 01:48:56,430 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-11-24 01:48:56,430 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 157 transitions, 1366 flow [2024-11-24 01:48:56,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:56,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:56,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:56,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:48:56,430 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:56,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:56,431 INFO L85 PathProgramCache]: Analyzing trace with hash -702910571, now seen corresponding path program 17 times [2024-11-24 01:48:56,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:56,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430703232] [2024-11-24 01:48:56,431 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:48:56,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:56,455 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:48:56,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:57,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430703232] [2024-11-24 01:48:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430703232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:57,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:57,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306097544] [2024-11-24 01:48:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:57,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:57,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:57,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:57,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:57,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 157 transitions, 1366 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:57,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:57,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:57,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:48:58,243 INFO L124 PetriNetUnfolderBase]: 2487/4172 cut-off events. [2024-11-24 01:48:58,244 INFO L125 PetriNetUnfolderBase]: For 32702/32724 co-relation queries the response was YES. [2024-11-24 01:48:58,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 4172 events. 2487/4172 cut-off events. For 32702/32724 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25588 event pairs, 836 based on Foata normal form. 19/4096 useless extension candidates. Maximal degree in co-relation 17759. Up to 3426 conditions per place. [2024-11-24 01:48:58,287 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 161 selfloop transitions, 41 changer transitions 4/211 dead transitions. [2024-11-24 01:48:58,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 211 transitions, 2065 flow [2024-11-24 01:48:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:48:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:48:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-11-24 01:48:58,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-11-24 01:48:58,289 INFO L175 Difference]: Start difference. First operand has 165 places, 157 transitions, 1366 flow. Second operand 11 states and 196 transitions. [2024-11-24 01:48:58,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 211 transitions, 2065 flow [2024-11-24 01:48:58,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 211 transitions, 1997 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-24 01:48:58,356 INFO L231 Difference]: Finished difference. Result has 169 places, 161 transitions, 1446 flow [2024-11-24 01:48:58,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1446, PETRI_PLACES=169, PETRI_TRANSITIONS=161} [2024-11-24 01:48:58,357 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 128 predicate places. [2024-11-24 01:48:58,357 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 161 transitions, 1446 flow [2024-11-24 01:48:58,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:58,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:48:58,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:58,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:48:58,358 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:48:58,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:58,359 INFO L85 PathProgramCache]: Analyzing trace with hash -426056255, now seen corresponding path program 18 times [2024-11-24 01:48:58,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:58,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116302008] [2024-11-24 01:48:58,359 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:48:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:58,384 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 01:48:58,385 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:48:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:48:59,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:59,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116302008] [2024-11-24 01:48:59,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116302008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:59,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:59,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:48:59,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487799314] [2024-11-24 01:48:59,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:59,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:48:59,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:59,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:48:59,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:48:59,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:48:59,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 161 transitions, 1446 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:59,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:48:59,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:48:59,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:00,209 INFO L124 PetriNetUnfolderBase]: 2726/4577 cut-off events. [2024-11-24 01:49:00,209 INFO L125 PetriNetUnfolderBase]: For 43182/43182 co-relation queries the response was YES. [2024-11-24 01:49:00,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20577 conditions, 4577 events. 2726/4577 cut-off events. For 43182/43182 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 28715 event pairs, 940 based on Foata normal form. 1/4482 useless extension candidates. Maximal degree in co-relation 20509. Up to 3540 conditions per place. [2024-11-24 01:49:00,254 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 189 selfloop transitions, 44 changer transitions 3/241 dead transitions. [2024-11-24 01:49:00,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 241 transitions, 2541 flow [2024-11-24 01:49:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:49:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:49:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-11-24 01:49:00,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42234848484848486 [2024-11-24 01:49:00,256 INFO L175 Difference]: Start difference. First operand has 169 places, 161 transitions, 1446 flow. Second operand 12 states and 223 transitions. [2024-11-24 01:49:00,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 241 transitions, 2541 flow [2024-11-24 01:49:00,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 241 transitions, 2415 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-11-24 01:49:00,329 INFO L231 Difference]: Finished difference. Result has 176 places, 173 transitions, 1669 flow [2024-11-24 01:49:00,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1669, PETRI_PLACES=176, PETRI_TRANSITIONS=173} [2024-11-24 01:49:00,330 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-11-24 01:49:00,330 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 173 transitions, 1669 flow [2024-11-24 01:49:00,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:00,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:00,330 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:00,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:49:00,331 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:00,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:00,331 INFO L85 PathProgramCache]: Analyzing trace with hash -513564937, now seen corresponding path program 19 times [2024-11-24 01:49:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:00,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493764458] [2024-11-24 01:49:00,331 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:49:00,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:00,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:00,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493764458] [2024-11-24 01:49:00,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493764458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:00,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:00,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851118770] [2024-11-24 01:49:00,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:00,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:00,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:00,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:00,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:01,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:01,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 173 transitions, 1669 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:01,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:01,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:01,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:02,186 INFO L124 PetriNetUnfolderBase]: 2910/4903 cut-off events. [2024-11-24 01:49:02,186 INFO L125 PetriNetUnfolderBase]: For 57488/57496 co-relation queries the response was YES. [2024-11-24 01:49:02,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23262 conditions, 4903 events. 2910/4903 cut-off events. For 57488/57496 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 31685 event pairs, 871 based on Foata normal form. 3/4806 useless extension candidates. Maximal degree in co-relation 23190. Up to 3712 conditions per place. [2024-11-24 01:49:02,227 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 187 selfloop transitions, 54 changer transitions 3/249 dead transitions. [2024-11-24 01:49:02,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 249 transitions, 2828 flow [2024-11-24 01:49:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:49:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:49:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-11-24 01:49:02,229 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-11-24 01:49:02,229 INFO L175 Difference]: Start difference. First operand has 176 places, 173 transitions, 1669 flow. Second operand 12 states and 222 transitions. [2024-11-24 01:49:02,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 249 transitions, 2828 flow [2024-11-24 01:49:02,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 249 transitions, 2588 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-11-24 01:49:02,315 INFO L231 Difference]: Finished difference. Result has 186 places, 184 transitions, 1834 flow [2024-11-24 01:49:02,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1834, PETRI_PLACES=186, PETRI_TRANSITIONS=184} [2024-11-24 01:49:02,316 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-11-24 01:49:02,316 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 184 transitions, 1834 flow [2024-11-24 01:49:02,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:02,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:02,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:02,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:49:02,316 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:02,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:02,317 INFO L85 PathProgramCache]: Analyzing trace with hash 749434389, now seen corresponding path program 20 times [2024-11-24 01:49:02,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:02,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902880352] [2024-11-24 01:49:02,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:49:02,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:02,336 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:49:02,336 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:02,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902880352] [2024-11-24 01:49:02,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902880352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:02,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:02,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:02,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99546697] [2024-11-24 01:49:02,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:02,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:02,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:02,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:02,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:03,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:03,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 184 transitions, 1834 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:03,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:03,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:03,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:03,886 INFO L124 PetriNetUnfolderBase]: 3021/5096 cut-off events. [2024-11-24 01:49:03,886 INFO L125 PetriNetUnfolderBase]: For 68272/68280 co-relation queries the response was YES. [2024-11-24 01:49:03,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24727 conditions, 5096 events. 3021/5096 cut-off events. For 68272/68280 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 33293 event pairs, 1000 based on Foata normal form. 3/4993 useless extension candidates. Maximal degree in co-relation 24650. Up to 3999 conditions per place. [2024-11-24 01:49:03,931 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 196 selfloop transitions, 49 changer transitions 3/253 dead transitions. [2024-11-24 01:49:03,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 253 transitions, 2878 flow [2024-11-24 01:49:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:49:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:49:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-11-24 01:49:03,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-11-24 01:49:03,933 INFO L175 Difference]: Start difference. First operand has 186 places, 184 transitions, 1834 flow. Second operand 12 states and 219 transitions. [2024-11-24 01:49:03,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 253 transitions, 2878 flow [2024-11-24 01:49:04,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 253 transitions, 2675 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-11-24 01:49:04,050 INFO L231 Difference]: Finished difference. Result has 193 places, 190 transitions, 1895 flow [2024-11-24 01:49:04,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1895, PETRI_PLACES=193, PETRI_TRANSITIONS=190} [2024-11-24 01:49:04,050 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-11-24 01:49:04,050 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 190 transitions, 1895 flow [2024-11-24 01:49:04,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:04,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:04,050 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:04,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:49:04,051 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:04,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:04,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1174075925, now seen corresponding path program 21 times [2024-11-24 01:49:04,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:04,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418256383] [2024-11-24 01:49:04,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:49:04,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:04,078 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 01:49:04,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:04,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:04,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418256383] [2024-11-24 01:49:04,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418256383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:04,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352384483] [2024-11-24 01:49:04,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:04,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:04,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:04,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:04,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:04,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 190 transitions, 1895 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:04,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:04,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:04,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:05,706 INFO L124 PetriNetUnfolderBase]: 3021/5096 cut-off events. [2024-11-24 01:49:05,706 INFO L125 PetriNetUnfolderBase]: For 67675/67675 co-relation queries the response was YES. [2024-11-24 01:49:05,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24617 conditions, 5096 events. 3021/5096 cut-off events. For 67675/67675 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 32959 event pairs, 1078 based on Foata normal form. 1/4994 useless extension candidates. Maximal degree in co-relation 24537. Up to 4076 conditions per place. [2024-11-24 01:49:05,784 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 193 selfloop transitions, 51 changer transitions 4/253 dead transitions. [2024-11-24 01:49:05,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 253 transitions, 2821 flow [2024-11-24 01:49:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:49:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:49:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2024-11-24 01:49:05,785 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-24 01:49:05,785 INFO L175 Difference]: Start difference. First operand has 193 places, 190 transitions, 1895 flow. Second operand 12 states and 216 transitions. [2024-11-24 01:49:05,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 253 transitions, 2821 flow [2024-11-24 01:49:05,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 253 transitions, 2670 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-11-24 01:49:05,936 INFO L231 Difference]: Finished difference. Result has 198 places, 194 transitions, 1924 flow [2024-11-24 01:49:05,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1924, PETRI_PLACES=198, PETRI_TRANSITIONS=194} [2024-11-24 01:49:05,937 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-11-24 01:49:05,937 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 194 transitions, 1924 flow [2024-11-24 01:49:05,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:05,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:05,937 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:05,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:49:05,937 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:05,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1750288587, now seen corresponding path program 22 times [2024-11-24 01:49:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854804848] [2024-11-24 01:49:05,938 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:49:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:05,960 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:49:05,960 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:06,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:06,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854804848] [2024-11-24 01:49:06,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854804848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:06,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:06,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:06,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921306452] [2024-11-24 01:49:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:06,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:06,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:06,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:06,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:06,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 44 [2024-11-24 01:49:06,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 194 transitions, 1924 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:06,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:06,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 44 [2024-11-24 01:49:06,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:07,697 INFO L124 PetriNetUnfolderBase]: 3350/5605 cut-off events. [2024-11-24 01:49:07,697 INFO L125 PetriNetUnfolderBase]: For 76559/76567 co-relation queries the response was YES. [2024-11-24 01:49:07,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27352 conditions, 5605 events. 3350/5605 cut-off events. For 76559/76567 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 36780 event pairs, 1362 based on Foata normal form. 3/5489 useless extension candidates. Maximal degree in co-relation 27270. Up to 4727 conditions per place. [2024-11-24 01:49:07,750 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 216 selfloop transitions, 36 changer transitions 3/259 dead transitions. [2024-11-24 01:49:07,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 259 transitions, 3129 flow [2024-11-24 01:49:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-11-24 01:49:07,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3987603305785124 [2024-11-24 01:49:07,751 INFO L175 Difference]: Start difference. First operand has 198 places, 194 transitions, 1924 flow. Second operand 11 states and 193 transitions. [2024-11-24 01:49:07,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 259 transitions, 3129 flow [2024-11-24 01:49:07,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 259 transitions, 2975 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-11-24 01:49:07,847 INFO L231 Difference]: Finished difference. Result has 203 places, 203 transitions, 2147 flow [2024-11-24 01:49:07,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2147, PETRI_PLACES=203, PETRI_TRANSITIONS=203} [2024-11-24 01:49:07,848 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-11-24 01:49:07,848 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 203 transitions, 2147 flow [2024-11-24 01:49:07,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:07,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:07,848 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:07,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 01:49:07,848 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:07,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:07,849 INFO L85 PathProgramCache]: Analyzing trace with hash 522938547, now seen corresponding path program 23 times [2024-11-24 01:49:07,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:07,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511860720] [2024-11-24 01:49:07,849 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:49:07,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:07,871 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:49:07,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:08,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511860720] [2024-11-24 01:49:08,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511860720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:08,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:08,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411088934] [2024-11-24 01:49:08,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:08,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:08,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:08,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:08,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:08,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:08,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 203 transitions, 2147 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:08,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:08,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:08,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:09,937 INFO L124 PetriNetUnfolderBase]: 3354/5662 cut-off events. [2024-11-24 01:49:09,937 INFO L125 PetriNetUnfolderBase]: For 101448/101456 co-relation queries the response was YES. [2024-11-24 01:49:09,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29349 conditions, 5662 events. 3354/5662 cut-off events. For 101448/101456 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 37799 event pairs, 1321 based on Foata normal form. 3/5539 useless extension candidates. Maximal degree in co-relation 29263. Up to 4727 conditions per place. [2024-11-24 01:49:09,979 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 226 selfloop transitions, 37 changer transitions 3/271 dead transitions. [2024-11-24 01:49:09,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 271 transitions, 3410 flow [2024-11-24 01:49:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-11-24 01:49:09,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4256198347107438 [2024-11-24 01:49:09,981 INFO L175 Difference]: Start difference. First operand has 203 places, 203 transitions, 2147 flow. Second operand 11 states and 206 transitions. [2024-11-24 01:49:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 271 transitions, 3410 flow [2024-11-24 01:49:10,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 271 transitions, 3122 flow, removed 127 selfloop flow, removed 5 redundant places. [2024-11-24 01:49:10,166 INFO L231 Difference]: Finished difference. Result has 212 places, 213 transitions, 2248 flow [2024-11-24 01:49:10,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2248, PETRI_PLACES=212, PETRI_TRANSITIONS=213} [2024-11-24 01:49:10,167 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-11-24 01:49:10,167 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 213 transitions, 2248 flow [2024-11-24 01:49:10,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:10,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:10,168 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:10,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 01:49:10,168 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:10,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:10,168 INFO L85 PathProgramCache]: Analyzing trace with hash -32957915, now seen corresponding path program 24 times [2024-11-24 01:49:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101953998] [2024-11-24 01:49:10,168 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:49:10,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:10,204 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 01:49:10,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101953998] [2024-11-24 01:49:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101953998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:10,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:10,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906697991] [2024-11-24 01:49:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:10,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:10,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:10,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:10,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:10,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:10,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 213 transitions, 2248 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:10,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:10,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:10,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:11,971 INFO L124 PetriNetUnfolderBase]: 3415/5766 cut-off events. [2024-11-24 01:49:11,972 INFO L125 PetriNetUnfolderBase]: For 94450/94450 co-relation queries the response was YES. [2024-11-24 01:49:12,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29394 conditions, 5766 events. 3415/5766 cut-off events. For 94450/94450 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 38521 event pairs, 1443 based on Foata normal form. 1/5645 useless extension candidates. Maximal degree in co-relation 29303. Up to 4966 conditions per place. [2024-11-24 01:49:12,015 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 220 selfloop transitions, 36 changer transitions 4/265 dead transitions. [2024-11-24 01:49:12,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 265 transitions, 3204 flow [2024-11-24 01:49:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-11-24 01:49:12,016 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3987603305785124 [2024-11-24 01:49:12,016 INFO L175 Difference]: Start difference. First operand has 212 places, 213 transitions, 2248 flow. Second operand 11 states and 193 transitions. [2024-11-24 01:49:12,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 265 transitions, 3204 flow [2024-11-24 01:49:12,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 265 transitions, 2998 flow, removed 86 selfloop flow, removed 5 redundant places. [2024-11-24 01:49:12,165 INFO L231 Difference]: Finished difference. Result has 220 places, 219 transitions, 2253 flow [2024-11-24 01:49:12,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2253, PETRI_PLACES=220, PETRI_TRANSITIONS=219} [2024-11-24 01:49:12,166 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-11-24 01:49:12,166 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 219 transitions, 2253 flow [2024-11-24 01:49:12,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:12,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:12,166 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:12,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 01:49:12,166 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:12,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash -637280707, now seen corresponding path program 25 times [2024-11-24 01:49:12,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:12,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367057196] [2024-11-24 01:49:12,167 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:49:12,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:12,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:12,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367057196] [2024-11-24 01:49:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367057196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:12,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590366699] [2024-11-24 01:49:12,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:12,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:12,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:12,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:12,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:12,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:12,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 219 transitions, 2253 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:12,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:12,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:12,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:14,222 INFO L124 PetriNetUnfolderBase]: 3551/6005 cut-off events. [2024-11-24 01:49:14,223 INFO L125 PetriNetUnfolderBase]: For 97375/97375 co-relation queries the response was YES. [2024-11-24 01:49:14,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30423 conditions, 6005 events. 3551/6005 cut-off events. For 97375/97375 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 40579 event pairs, 1450 based on Foata normal form. 1/5883 useless extension candidates. Maximal degree in co-relation 30328. Up to 4990 conditions per place. [2024-11-24 01:49:14,298 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 231 selfloop transitions, 42 changer transitions 3/281 dead transitions. [2024-11-24 01:49:14,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 281 transitions, 3467 flow [2024-11-24 01:49:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-11-24 01:49:14,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4214876033057851 [2024-11-24 01:49:14,299 INFO L175 Difference]: Start difference. First operand has 220 places, 219 transitions, 2253 flow. Second operand 11 states and 204 transitions. [2024-11-24 01:49:14,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 281 transitions, 3467 flow [2024-11-24 01:49:14,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 281 transitions, 3305 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-11-24 01:49:14,495 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 2446 flow [2024-11-24 01:49:14,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2446, PETRI_PLACES=227, PETRI_TRANSITIONS=226} [2024-11-24 01:49:14,495 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-11-24 01:49:14,495 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 2446 flow [2024-11-24 01:49:14,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:14,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:14,496 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:14,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 01:49:14,496 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:14,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash 341732433, now seen corresponding path program 26 times [2024-11-24 01:49:14,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:14,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836439760] [2024-11-24 01:49:14,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:49:14,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:14,510 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:49:14,510 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:15,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836439760] [2024-11-24 01:49:15,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836439760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:15,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260873371] [2024-11-24 01:49:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:15,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:15,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:15,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:15,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:15,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 226 transitions, 2446 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:15,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:15,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:15,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:16,350 INFO L124 PetriNetUnfolderBase]: 3664/6207 cut-off events. [2024-11-24 01:49:16,350 INFO L125 PetriNetUnfolderBase]: For 120053/120053 co-relation queries the response was YES. [2024-11-24 01:49:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32597 conditions, 6207 events. 3664/6207 cut-off events. For 120053/120053 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 42278 event pairs, 1543 based on Foata normal form. 1/6081 useless extension candidates. Maximal degree in co-relation 32498. Up to 5297 conditions per place. [2024-11-24 01:49:16,422 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 246 selfloop transitions, 35 changer transitions 3/289 dead transitions. [2024-11-24 01:49:16,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 289 transitions, 3746 flow [2024-11-24 01:49:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-11-24 01:49:16,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4194214876033058 [2024-11-24 01:49:16,423 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 2446 flow. Second operand 11 states and 203 transitions. [2024-11-24 01:49:16,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 289 transitions, 3746 flow [2024-11-24 01:49:16,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 289 transitions, 3504 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-11-24 01:49:16,681 INFO L231 Difference]: Finished difference. Result has 234 places, 232 transitions, 2533 flow [2024-11-24 01:49:16,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2533, PETRI_PLACES=234, PETRI_TRANSITIONS=232} [2024-11-24 01:49:16,682 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-11-24 01:49:16,682 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 232 transitions, 2533 flow [2024-11-24 01:49:16,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:16,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:16,683 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:16,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-24 01:49:16,683 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:16,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1939789249, now seen corresponding path program 27 times [2024-11-24 01:49:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:16,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754719279] [2024-11-24 01:49:16,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:49:16,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:16,704 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 01:49:16,705 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:17,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:17,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754719279] [2024-11-24 01:49:17,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754719279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:17,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:17,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:17,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006719097] [2024-11-24 01:49:17,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:17,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:17,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:17,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:17,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:17,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:17,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 232 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:17,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:17,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:17,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:18,318 INFO L124 PetriNetUnfolderBase]: 3664/6207 cut-off events. [2024-11-24 01:49:18,319 INFO L125 PetriNetUnfolderBase]: For 121981/121989 co-relation queries the response was YES. [2024-11-24 01:49:18,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32137 conditions, 6207 events. 3664/6207 cut-off events. For 121981/121989 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 42597 event pairs, 1542 based on Foata normal form. 3/6076 useless extension candidates. Maximal degree in co-relation 32034. Up to 5381 conditions per place. [2024-11-24 01:49:18,393 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 242 selfloop transitions, 34 changer transitions 3/284 dead transitions. [2024-11-24 01:49:18,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 284 transitions, 3608 flow [2024-11-24 01:49:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-11-24 01:49:18,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40082644628099173 [2024-11-24 01:49:18,394 INFO L175 Difference]: Start difference. First operand has 234 places, 232 transitions, 2533 flow. Second operand 11 states and 194 transitions. [2024-11-24 01:49:18,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 284 transitions, 3608 flow [2024-11-24 01:49:18,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 284 transitions, 3323 flow, removed 124 selfloop flow, removed 6 redundant places. [2024-11-24 01:49:18,607 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2437 flow [2024-11-24 01:49:18,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2437, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-11-24 01:49:18,608 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-11-24 01:49:18,608 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2437 flow [2024-11-24 01:49:18,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:18,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:18,608 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:18,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-24 01:49:18,608 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:18,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1345128259, now seen corresponding path program 28 times [2024-11-24 01:49:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:18,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941338396] [2024-11-24 01:49:18,609 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:49:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:18,629 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:49:18,629 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:19,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:19,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941338396] [2024-11-24 01:49:19,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941338396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:19,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:19,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073531118] [2024-11-24 01:49:19,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:19,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:19,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:19,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:19,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 44 [2024-11-24 01:49:19,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 2437 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:19,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:19,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 44 [2024-11-24 01:49:19,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:20,549 INFO L124 PetriNetUnfolderBase]: 3958/6660 cut-off events. [2024-11-24 01:49:20,549 INFO L125 PetriNetUnfolderBase]: For 133074/133082 co-relation queries the response was YES. [2024-11-24 01:49:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34416 conditions, 6660 events. 3958/6660 cut-off events. For 133074/133082 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 45771 event pairs, 1684 based on Foata normal form. 3/6523 useless extension candidates. Maximal degree in co-relation 34310. Up to 5706 conditions per place. [2024-11-24 01:49:20,641 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 256 selfloop transitions, 36 changer transitions 3/299 dead transitions. [2024-11-24 01:49:20,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 299 transitions, 3704 flow [2024-11-24 01:49:20,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-11-24 01:49:20,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40289256198347106 [2024-11-24 01:49:20,642 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2437 flow. Second operand 11 states and 195 transitions. [2024-11-24 01:49:20,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 299 transitions, 3704 flow [2024-11-24 01:49:20,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 299 transitions, 3574 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-11-24 01:49:20,887 INFO L231 Difference]: Finished difference. Result has 245 places, 241 transitions, 2582 flow [2024-11-24 01:49:20,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2582, PETRI_PLACES=245, PETRI_TRANSITIONS=241} [2024-11-24 01:49:20,888 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-11-24 01:49:20,888 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 241 transitions, 2582 flow [2024-11-24 01:49:20,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:20,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:20,888 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:20,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 01:49:20,888 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:20,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1779423283, now seen corresponding path program 29 times [2024-11-24 01:49:20,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815379304] [2024-11-24 01:49:20,889 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:49:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:20,908 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:49:20,908 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:21,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:21,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815379304] [2024-11-24 01:49:21,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815379304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:21,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:21,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:21,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511392058] [2024-11-24 01:49:21,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:21,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:21,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:21,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:21,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:21,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:21,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 241 transitions, 2582 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:21,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:21,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:21,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:22,589 INFO L124 PetriNetUnfolderBase]: 3760/6385 cut-off events. [2024-11-24 01:49:22,589 INFO L125 PetriNetUnfolderBase]: For 134411/134411 co-relation queries the response was YES. [2024-11-24 01:49:22,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33407 conditions, 6385 events. 3760/6385 cut-off events. For 134411/134411 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 43943 event pairs, 1627 based on Foata normal form. 1/6255 useless extension candidates. Maximal degree in co-relation 33298. Up to 5502 conditions per place. [2024-11-24 01:49:22,651 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 251 selfloop transitions, 37 changer transitions 4/297 dead transitions. [2024-11-24 01:49:22,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 297 transitions, 3663 flow [2024-11-24 01:49:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-11-24 01:49:22,652 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-11-24 01:49:22,653 INFO L175 Difference]: Start difference. First operand has 245 places, 241 transitions, 2582 flow. Second operand 11 states and 200 transitions. [2024-11-24 01:49:22,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 297 transitions, 3663 flow [2024-11-24 01:49:22,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 297 transitions, 3465 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-11-24 01:49:22,958 INFO L231 Difference]: Finished difference. Result has 251 places, 245 transitions, 2533 flow [2024-11-24 01:49:22,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2533, PETRI_PLACES=251, PETRI_TRANSITIONS=245} [2024-11-24 01:49:22,959 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-11-24 01:49:22,959 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 245 transitions, 2533 flow [2024-11-24 01:49:22,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:22,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:22,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:22,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-24 01:49:22,960 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:22,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2010399151, now seen corresponding path program 30 times [2024-11-24 01:49:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143847326] [2024-11-24 01:49:22,961 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:49:22,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:22,978 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 01:49:22,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:23,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:23,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143847326] [2024-11-24 01:49:23,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143847326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:23,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:23,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:23,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831732858] [2024-11-24 01:49:23,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:23,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:23,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:23,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:23,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:23,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:23,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 245 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:23,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:23,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:23,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:25,134 INFO L124 PetriNetUnfolderBase]: 3796/6452 cut-off events. [2024-11-24 01:49:25,134 INFO L125 PetriNetUnfolderBase]: For 126296/126296 co-relation queries the response was YES. [2024-11-24 01:49:25,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33111 conditions, 6452 events. 3796/6452 cut-off events. For 126296/126296 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 44560 event pairs, 1685 based on Foata normal form. 1/6323 useless extension candidates. Maximal degree in co-relation 32999. Up to 5633 conditions per place. [2024-11-24 01:49:25,202 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 249 selfloop transitions, 37 changer transitions 3/294 dead transitions. [2024-11-24 01:49:25,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 294 transitions, 3521 flow [2024-11-24 01:49:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-11-24 01:49:25,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3987603305785124 [2024-11-24 01:49:25,203 INFO L175 Difference]: Start difference. First operand has 251 places, 245 transitions, 2533 flow. Second operand 11 states and 193 transitions. [2024-11-24 01:49:25,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 294 transitions, 3521 flow [2024-11-24 01:49:25,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 294 transitions, 3385 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-11-24 01:49:25,429 INFO L231 Difference]: Finished difference. Result has 255 places, 248 transitions, 2543 flow [2024-11-24 01:49:25,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2543, PETRI_PLACES=255, PETRI_TRANSITIONS=248} [2024-11-24 01:49:25,429 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-11-24 01:49:25,429 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 248 transitions, 2543 flow [2024-11-24 01:49:25,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:25,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:25,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:25,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-24 01:49:25,430 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:25,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash 743947453, now seen corresponding path program 31 times [2024-11-24 01:49:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:25,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686995560] [2024-11-24 01:49:25,430 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:49:25,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:25,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686995560] [2024-11-24 01:49:25,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686995560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:25,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119127153] [2024-11-24 01:49:25,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:25,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:25,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:25,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:25,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:25,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:25,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 248 transitions, 2543 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:25,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:25,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:25,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:27,284 INFO L124 PetriNetUnfolderBase]: 3796/6470 cut-off events. [2024-11-24 01:49:27,285 INFO L125 PetriNetUnfolderBase]: For 124883/124891 co-relation queries the response was YES. [2024-11-24 01:49:27,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32911 conditions, 6470 events. 3796/6470 cut-off events. For 124883/124891 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 45053 event pairs, 1613 based on Foata normal form. 3/6333 useless extension candidates. Maximal degree in co-relation 32797. Up to 5567 conditions per place. [2024-11-24 01:49:27,343 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 252 selfloop transitions, 41 changer transitions 4/302 dead transitions. [2024-11-24 01:49:27,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 302 transitions, 3578 flow [2024-11-24 01:49:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-11-24 01:49:27,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41115702479338845 [2024-11-24 01:49:27,345 INFO L175 Difference]: Start difference. First operand has 255 places, 248 transitions, 2543 flow. Second operand 11 states and 199 transitions. [2024-11-24 01:49:27,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 302 transitions, 3578 flow [2024-11-24 01:49:27,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 302 transitions, 3442 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-11-24 01:49:27,580 INFO L231 Difference]: Finished difference. Result has 259 places, 252 transitions, 2577 flow [2024-11-24 01:49:27,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2577, PETRI_PLACES=259, PETRI_TRANSITIONS=252} [2024-11-24 01:49:27,580 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-11-24 01:49:27,580 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 252 transitions, 2577 flow [2024-11-24 01:49:27,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:27,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:27,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:27,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-24 01:49:27,581 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:27,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:27,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1850226815, now seen corresponding path program 32 times [2024-11-24 01:49:27,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:27,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451254612] [2024-11-24 01:49:27,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:49:27,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:27,597 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:49:27,597 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:27,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:27,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451254612] [2024-11-24 01:49:27,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451254612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:27,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:27,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132434807] [2024-11-24 01:49:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:27,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:27,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:27,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:27,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:27,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:27,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 252 transitions, 2577 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:27,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:27,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:27,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:29,299 INFO L124 PetriNetUnfolderBase]: 3796/6458 cut-off events. [2024-11-24 01:49:29,299 INFO L125 PetriNetUnfolderBase]: For 124809/124809 co-relation queries the response was YES. [2024-11-24 01:49:29,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32930 conditions, 6458 events. 3796/6458 cut-off events. For 124809/124809 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 44725 event pairs, 1692 based on Foata normal form. 1/6324 useless extension candidates. Maximal degree in co-relation 32814. Up to 5645 conditions per place. [2024-11-24 01:49:29,363 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 255 selfloop transitions, 35 changer transitions 3/298 dead transitions. [2024-11-24 01:49:29,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 298 transitions, 3523 flow [2024-11-24 01:49:29,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-11-24 01:49:29,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3925619834710744 [2024-11-24 01:49:29,365 INFO L175 Difference]: Start difference. First operand has 259 places, 252 transitions, 2577 flow. Second operand 11 states and 190 transitions. [2024-11-24 01:49:29,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 298 transitions, 3523 flow [2024-11-24 01:49:29,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 298 transitions, 3367 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-11-24 01:49:29,603 INFO L231 Difference]: Finished difference. Result has 263 places, 254 transitions, 2515 flow [2024-11-24 01:49:29,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2515, PETRI_PLACES=263, PETRI_TRANSITIONS=254} [2024-11-24 01:49:29,603 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-11-24 01:49:29,604 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 254 transitions, 2515 flow [2024-11-24 01:49:29,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:29,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:29,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:29,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-24 01:49:29,604 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:29,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash 691319125, now seen corresponding path program 33 times [2024-11-24 01:49:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:29,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214228338] [2024-11-24 01:49:29,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:49:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:29,628 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 01:49:29,628 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214228338] [2024-11-24 01:49:30,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214228338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:30,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:30,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442214616] [2024-11-24 01:49:30,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:30,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:30,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:30,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:30,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:30,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:30,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 254 transitions, 2515 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:30,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:30,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:30,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:31,845 INFO L124 PetriNetUnfolderBase]: 3927/6681 cut-off events. [2024-11-24 01:49:31,845 INFO L125 PetriNetUnfolderBase]: For 137918/137918 co-relation queries the response was YES. [2024-11-24 01:49:31,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34592 conditions, 6681 events. 3927/6681 cut-off events. For 137918/137918 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 46656 event pairs, 1724 based on Foata normal form. 1/6539 useless extension candidates. Maximal degree in co-relation 34474. Up to 5758 conditions per place. [2024-11-24 01:49:31,929 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 271 selfloop transitions, 35 changer transitions 3/314 dead transitions. [2024-11-24 01:49:31,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 314 transitions, 3986 flow [2024-11-24 01:49:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-11-24 01:49:31,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-11-24 01:49:31,930 INFO L175 Difference]: Start difference. First operand has 263 places, 254 transitions, 2515 flow. Second operand 11 states and 200 transitions. [2024-11-24 01:49:31,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 314 transitions, 3986 flow [2024-11-24 01:49:32,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 314 transitions, 3918 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-24 01:49:32,224 INFO L231 Difference]: Finished difference. Result has 269 places, 263 transitions, 2926 flow [2024-11-24 01:49:32,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2926, PETRI_PLACES=269, PETRI_TRANSITIONS=263} [2024-11-24 01:49:32,227 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-11-24 01:49:32,227 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 263 transitions, 2926 flow [2024-11-24 01:49:32,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:32,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:32,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:32,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-24 01:49:32,228 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:32,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:32,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1330421037, now seen corresponding path program 34 times [2024-11-24 01:49:32,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:32,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145054172] [2024-11-24 01:49:32,229 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:49:32,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:32,251 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:49:32,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:32,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145054172] [2024-11-24 01:49:32,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145054172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:32,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:32,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:32,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021868120] [2024-11-24 01:49:32,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:32,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:32,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:32,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:32,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:32,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 44 [2024-11-24 01:49:32,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 263 transitions, 2926 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:32,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:32,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 44 [2024-11-24 01:49:32,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:34,859 INFO L124 PetriNetUnfolderBase]: 4337/7340 cut-off events. [2024-11-24 01:49:34,860 INFO L125 PetriNetUnfolderBase]: For 200337/200345 co-relation queries the response was YES. [2024-11-24 01:49:34,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40429 conditions, 7340 events. 4337/7340 cut-off events. For 200337/200345 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 51581 event pairs, 1833 based on Foata normal form. 3/7175 useless extension candidates. Maximal degree in co-relation 40307. Up to 6189 conditions per place. [2024-11-24 01:49:34,935 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 298 selfloop transitions, 39 changer transitions 3/344 dead transitions. [2024-11-24 01:49:34,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 344 transitions, 4652 flow [2024-11-24 01:49:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-11-24 01:49:34,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4359504132231405 [2024-11-24 01:49:34,937 INFO L175 Difference]: Start difference. First operand has 269 places, 263 transitions, 2926 flow. Second operand 11 states and 211 transitions. [2024-11-24 01:49:34,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 344 transitions, 4652 flow [2024-11-24 01:49:35,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 344 transitions, 4320 flow, removed 150 selfloop flow, removed 5 redundant places. [2024-11-24 01:49:35,544 INFO L231 Difference]: Finished difference. Result has 279 places, 275 transitions, 3136 flow [2024-11-24 01:49:35,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3136, PETRI_PLACES=279, PETRI_TRANSITIONS=275} [2024-11-24 01:49:35,544 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-11-24 01:49:35,544 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 275 transitions, 3136 flow [2024-11-24 01:49:35,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:35,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:35,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:35,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-24 01:49:35,545 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:35,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1886317499, now seen corresponding path program 35 times [2024-11-24 01:49:35,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:35,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644904732] [2024-11-24 01:49:35,546 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:49:35,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:35,573 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:49:35,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:36,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:36,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644904732] [2024-11-24 01:49:36,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644904732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:36,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:36,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:36,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100669983] [2024-11-24 01:49:36,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:36,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:36,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:36,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:36,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:36,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:36,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 275 transitions, 3136 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:36,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:36,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:36,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:37,927 INFO L124 PetriNetUnfolderBase]: 4200/7168 cut-off events. [2024-11-24 01:49:37,927 INFO L125 PetriNetUnfolderBase]: For 198479/198487 co-relation queries the response was YES. [2024-11-24 01:49:38,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39402 conditions, 7168 events. 4200/7168 cut-off events. For 198479/198487 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 51007 event pairs, 1858 based on Foata normal form. 3/7010 useless extension candidates. Maximal degree in co-relation 39274. Up to 6274 conditions per place. [2024-11-24 01:49:38,059 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 280 selfloop transitions, 35 changer transitions 4/324 dead transitions. [2024-11-24 01:49:38,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 324 transitions, 4266 flow [2024-11-24 01:49:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-11-24 01:49:38,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-11-24 01:49:38,061 INFO L175 Difference]: Start difference. First operand has 279 places, 275 transitions, 3136 flow. Second operand 11 states and 192 transitions. [2024-11-24 01:49:38,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 324 transitions, 4266 flow [2024-11-24 01:49:38,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 324 transitions, 3938 flow, removed 149 selfloop flow, removed 4 redundant places. [2024-11-24 01:49:38,540 INFO L231 Difference]: Finished difference. Result has 288 places, 281 transitions, 3063 flow [2024-11-24 01:49:38,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3063, PETRI_PLACES=288, PETRI_TRANSITIONS=281} [2024-11-24 01:49:38,541 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-11-24 01:49:38,541 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 281 transitions, 3063 flow [2024-11-24 01:49:38,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:38,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:38,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:38,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-24 01:49:38,542 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:38,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1804327005, now seen corresponding path program 36 times [2024-11-24 01:49:38,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:38,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905157698] [2024-11-24 01:49:38,542 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:49:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:38,558 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 01:49:38,558 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:39,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:39,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905157698] [2024-11-24 01:49:39,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905157698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:39,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:39,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:39,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009430197] [2024-11-24 01:49:39,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:39,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:39,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:39,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:39,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:39,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:39,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 281 transitions, 3063 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:39,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:39,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:39,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:40,561 INFO L124 PetriNetUnfolderBase]: 4342/7409 cut-off events. [2024-11-24 01:49:40,561 INFO L125 PetriNetUnfolderBase]: For 200506/200514 co-relation queries the response was YES. [2024-11-24 01:49:40,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40255 conditions, 7409 events. 4342/7409 cut-off events. For 200506/200514 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 53100 event pairs, 1871 based on Foata normal form. 3/7252 useless extension candidates. Maximal degree in co-relation 40123. Up to 6298 conditions per place. [2024-11-24 01:49:40,694 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 291 selfloop transitions, 41 changer transitions 3/340 dead transitions. [2024-11-24 01:49:40,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 340 transitions, 4543 flow [2024-11-24 01:49:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-11-24 01:49:40,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4194214876033058 [2024-11-24 01:49:40,695 INFO L175 Difference]: Start difference. First operand has 288 places, 281 transitions, 3063 flow. Second operand 11 states and 203 transitions. [2024-11-24 01:49:40,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 340 transitions, 4543 flow [2024-11-24 01:49:41,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 340 transitions, 4327 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-11-24 01:49:41,293 INFO L231 Difference]: Finished difference. Result has 295 places, 288 transitions, 3296 flow [2024-11-24 01:49:41,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3296, PETRI_PLACES=295, PETRI_TRANSITIONS=288} [2024-11-24 01:49:41,294 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-11-24 01:49:41,294 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 288 transitions, 3296 flow [2024-11-24 01:49:41,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:41,294 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:41,294 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:41,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-24 01:49:41,294 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:41,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1511627151, now seen corresponding path program 37 times [2024-11-24 01:49:41,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404793212] [2024-11-24 01:49:41,295 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:49:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:41,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404793212] [2024-11-24 01:49:41,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404793212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:41,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:41,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948766979] [2024-11-24 01:49:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:41,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:41,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:41,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:41,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:41,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:41,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 288 transitions, 3296 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:41,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:41,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:41,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:43,678 INFO L124 PetriNetUnfolderBase]: 4458/7614 cut-off events. [2024-11-24 01:49:43,678 INFO L125 PetriNetUnfolderBase]: For 238818/238826 co-relation queries the response was YES. [2024-11-24 01:49:43,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42782 conditions, 7614 events. 4458/7614 cut-off events. For 238818/238826 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 55000 event pairs, 1961 based on Foata normal form. 3/7449 useless extension candidates. Maximal degree in co-relation 42646. Up to 6605 conditions per place. [2024-11-24 01:49:43,826 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 306 selfloop transitions, 34 changer transitions 3/348 dead transitions. [2024-11-24 01:49:43,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 348 transitions, 4872 flow [2024-11-24 01:49:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-11-24 01:49:43,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41735537190082644 [2024-11-24 01:49:43,827 INFO L175 Difference]: Start difference. First operand has 295 places, 288 transitions, 3296 flow. Second operand 11 states and 202 transitions. [2024-11-24 01:49:43,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 348 transitions, 4872 flow [2024-11-24 01:49:44,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 348 transitions, 4546 flow, removed 144 selfloop flow, removed 6 redundant places. [2024-11-24 01:49:44,615 INFO L231 Difference]: Finished difference. Result has 302 places, 294 transitions, 3387 flow [2024-11-24 01:49:44,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3387, PETRI_PLACES=302, PETRI_TRANSITIONS=294} [2024-11-24 01:49:44,616 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-11-24 01:49:44,616 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 294 transitions, 3387 flow [2024-11-24 01:49:44,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:44,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:44,616 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:44,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-24 01:49:44,617 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:44,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:44,617 INFO L85 PathProgramCache]: Analyzing trace with hash 86429665, now seen corresponding path program 38 times [2024-11-24 01:49:44,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:44,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215778948] [2024-11-24 01:49:44,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:49:44,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:44,635 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:49:44,636 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:45,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:45,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215778948] [2024-11-24 01:49:45,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215778948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:45,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:45,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689157404] [2024-11-24 01:49:45,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:45,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:45,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:45,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:45,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:45,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:45,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 294 transitions, 3387 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:45,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:45,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:45,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:46,810 INFO L124 PetriNetUnfolderBase]: 4458/7616 cut-off events. [2024-11-24 01:49:46,810 INFO L125 PetriNetUnfolderBase]: For 235681/235689 co-relation queries the response was YES. [2024-11-24 01:49:46,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41863 conditions, 7616 events. 4458/7616 cut-off events. For 235681/235689 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 55010 event pairs, 1992 based on Foata normal form. 3/7447 useless extension candidates. Maximal degree in co-relation 41723. Up to 6689 conditions per place. [2024-11-24 01:49:47,195 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 302 selfloop transitions, 33 changer transitions 3/343 dead transitions. [2024-11-24 01:49:47,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 343 transitions, 4642 flow [2024-11-24 01:49:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-11-24 01:49:47,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3987603305785124 [2024-11-24 01:49:47,197 INFO L175 Difference]: Start difference. First operand has 302 places, 294 transitions, 3387 flow. Second operand 11 states and 193 transitions. [2024-11-24 01:49:47,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 343 transitions, 4642 flow [2024-11-24 01:49:47,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 343 transitions, 4259 flow, removed 174 selfloop flow, removed 6 redundant places. [2024-11-24 01:49:47,654 INFO L231 Difference]: Finished difference. Result has 308 places, 297 transitions, 3231 flow [2024-11-24 01:49:47,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3080, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=308, PETRI_TRANSITIONS=297} [2024-11-24 01:49:47,655 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-11-24 01:49:47,655 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 297 transitions, 3231 flow [2024-11-24 01:49:47,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:47,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:47,656 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:47,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-24 01:49:47,656 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:47,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:47,657 INFO L85 PathProgramCache]: Analyzing trace with hash -508231325, now seen corresponding path program 39 times [2024-11-24 01:49:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:47,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136005602] [2024-11-24 01:49:47,658 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:49:47,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:47,678 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 01:49:47,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:48,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136005602] [2024-11-24 01:49:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136005602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:48,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:48,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959064562] [2024-11-24 01:49:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:48,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:48,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:48,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:48,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:48,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:48,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 297 transitions, 3231 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:48,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:48,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:48,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:50,249 INFO L124 PetriNetUnfolderBase]: 4521/7732 cut-off events. [2024-11-24 01:49:50,249 INFO L125 PetriNetUnfolderBase]: For 234274/234282 co-relation queries the response was YES. [2024-11-24 01:49:50,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42094 conditions, 7732 events. 4521/7732 cut-off events. For 234274/234282 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 56034 event pairs, 2020 based on Foata normal form. 3/7566 useless extension candidates. Maximal degree in co-relation 41951. Up to 6704 conditions per place. [2024-11-24 01:49:50,385 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 312 selfloop transitions, 35 changer transitions 3/355 dead transitions. [2024-11-24 01:49:50,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 355 transitions, 4699 flow [2024-11-24 01:49:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-11-24 01:49:50,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41735537190082644 [2024-11-24 01:49:50,386 INFO L175 Difference]: Start difference. First operand has 308 places, 297 transitions, 3231 flow. Second operand 11 states and 202 transitions. [2024-11-24 01:49:50,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 355 transitions, 4699 flow [2024-11-24 01:49:50,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 355 transitions, 4541 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-24 01:49:50,937 INFO L231 Difference]: Finished difference. Result has 313 places, 302 transitions, 3397 flow [2024-11-24 01:49:50,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3397, PETRI_PLACES=313, PETRI_TRANSITIONS=302} [2024-11-24 01:49:50,938 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-11-24 01:49:50,938 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 302 transitions, 3397 flow [2024-11-24 01:49:50,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:50,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:50,938 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:50,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-24 01:49:50,939 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:50,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1019652481, now seen corresponding path program 40 times [2024-11-24 01:49:50,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:50,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313235902] [2024-11-24 01:49:50,939 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:49:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:50,954 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:49:50,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313235902] [2024-11-24 01:49:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313235902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:51,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:51,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:51,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705588113] [2024-11-24 01:49:51,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:51,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:51,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:51,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:51,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 44 [2024-11-24 01:49:51,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 302 transitions, 3397 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:51,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:51,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 44 [2024-11-24 01:49:51,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:53,683 INFO L124 PetriNetUnfolderBase]: 4748/8071 cut-off events. [2024-11-24 01:49:53,683 INFO L125 PetriNetUnfolderBase]: For 260496/260504 co-relation queries the response was YES. [2024-11-24 01:49:53,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44347 conditions, 8071 events. 4748/8071 cut-off events. For 260496/260504 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 58061 event pairs, 2085 based on Foata normal form. 3/7899 useless extension candidates. Maximal degree in co-relation 44201. Up to 6864 conditions per place. [2024-11-24 01:49:53,850 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 322 selfloop transitions, 41 changer transitions 5/372 dead transitions. [2024-11-24 01:49:53,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 372 transitions, 4828 flow [2024-11-24 01:49:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-11-24 01:49:53,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-24 01:49:53,852 INFO L175 Difference]: Start difference. First operand has 313 places, 302 transitions, 3397 flow. Second operand 11 states and 209 transitions. [2024-11-24 01:49:53,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 372 transitions, 4828 flow [2024-11-24 01:49:54,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 372 transitions, 4572 flow, removed 112 selfloop flow, removed 5 redundant places. [2024-11-24 01:49:54,644 INFO L231 Difference]: Finished difference. Result has 321 places, 307 transitions, 3368 flow [2024-11-24 01:49:54,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3141, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3368, PETRI_PLACES=321, PETRI_TRANSITIONS=307} [2024-11-24 01:49:54,645 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-11-24 01:49:54,645 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 307 transitions, 3368 flow [2024-11-24 01:49:54,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:54,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:54,645 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:54,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-24 01:49:54,645 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:54,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1109412131, now seen corresponding path program 41 times [2024-11-24 01:49:54,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:54,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547871250] [2024-11-24 01:49:54,647 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:49:54,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:54,672 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:49:54,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:55,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:55,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547871250] [2024-11-24 01:49:55,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547871250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:55,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:55,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841678118] [2024-11-24 01:49:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:55,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:55,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:55,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:55,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:55,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 307 transitions, 3368 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:55,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:55,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:55,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:57,043 INFO L124 PetriNetUnfolderBase]: 4550/7797 cut-off events. [2024-11-24 01:49:57,043 INFO L125 PetriNetUnfolderBase]: For 231907/231915 co-relation queries the response was YES. [2024-11-24 01:49:57,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42006 conditions, 7797 events. 4550/7797 cut-off events. For 231907/231915 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 56563 event pairs, 2036 based on Foata normal form. 3/7628 useless extension candidates. Maximal degree in co-relation 41856. Up to 6795 conditions per place. [2024-11-24 01:49:57,179 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 309 selfloop transitions, 40 changer transitions 4/358 dead transitions. [2024-11-24 01:49:57,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 358 transitions, 4533 flow [2024-11-24 01:49:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:49:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:49:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-11-24 01:49:57,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-24 01:49:57,180 INFO L175 Difference]: Start difference. First operand has 321 places, 307 transitions, 3368 flow. Second operand 11 states and 198 transitions. [2024-11-24 01:49:57,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 358 transitions, 4533 flow [2024-11-24 01:49:57,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 358 transitions, 4340 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-24 01:49:57,827 INFO L231 Difference]: Finished difference. Result has 327 places, 311 transitions, 3361 flow [2024-11-24 01:49:57,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3361, PETRI_PLACES=327, PETRI_TRANSITIONS=311} [2024-11-24 01:49:57,828 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-11-24 01:49:57,828 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 311 transitions, 3361 flow [2024-11-24 01:49:57,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:57,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:57,829 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:57,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-24 01:49:57,829 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:49:57,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash 431208561, now seen corresponding path program 42 times [2024-11-24 01:49:57,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:57,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528351711] [2024-11-24 01:49:57,830 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:49:57,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:57,847 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 01:49:57,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:58,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:58,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528351711] [2024-11-24 01:49:58,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528351711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:58,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:58,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:49:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331801143] [2024-11-24 01:49:58,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:58,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:49:58,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:58,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:49:58,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:49:58,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:49:58,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 311 transitions, 3361 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:49:58,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:58,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:49:58,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:59,893 INFO L124 PetriNetUnfolderBase]: 4586/7864 cut-off events. [2024-11-24 01:49:59,893 INFO L125 PetriNetUnfolderBase]: For 227397/227405 co-relation queries the response was YES. [2024-11-24 01:49:59,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41831 conditions, 7864 events. 4586/7864 cut-off events. For 227397/227405 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 57250 event pairs, 2098 based on Foata normal form. 3/7692 useless extension candidates. Maximal degree in co-relation 41679. Up to 6929 conditions per place. [2024-11-24 01:50:00,010 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 313 selfloop transitions, 36 changer transitions 3/357 dead transitions. [2024-11-24 01:50:00,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 357 transitions, 4497 flow [2024-11-24 01:50:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:50:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:50:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-11-24 01:50:00,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-11-24 01:50:00,011 INFO L175 Difference]: Start difference. First operand has 327 places, 311 transitions, 3361 flow. Second operand 11 states and 192 transitions. [2024-11-24 01:50:00,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 357 transitions, 4497 flow [2024-11-24 01:50:00,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 357 transitions, 4315 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-11-24 01:50:00,658 INFO L231 Difference]: Finished difference. Result has 331 places, 314 transitions, 3345 flow [2024-11-24 01:50:00,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3345, PETRI_PLACES=331, PETRI_TRANSITIONS=314} [2024-11-24 01:50:00,658 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-11-24 01:50:00,658 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 314 transitions, 3345 flow [2024-11-24 01:50:00,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:00,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:50:00,659 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:00,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-24 01:50:00,659 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:50:00,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:00,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1922220979, now seen corresponding path program 43 times [2024-11-24 01:50:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308186035] [2024-11-24 01:50:00,660 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:50:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:50:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308186035] [2024-11-24 01:50:01,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308186035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:50:01,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:50:01,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:50:01,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768576609] [2024-11-24 01:50:01,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:50:01,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:50:01,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:01,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:50:01,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:50:01,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:50:01,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 314 transitions, 3345 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:01,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:50:01,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:50:01,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:50:02,936 INFO L124 PetriNetUnfolderBase]: 4586/7872 cut-off events. [2024-11-24 01:50:02,936 INFO L125 PetriNetUnfolderBase]: For 222016/222024 co-relation queries the response was YES. [2024-11-24 01:50:03,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41434 conditions, 7872 events. 4586/7872 cut-off events. For 222016/222024 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 57335 event pairs, 2105 based on Foata normal form. 3/7699 useless extension candidates. Maximal degree in co-relation 41280. Up to 6942 conditions per place. [2024-11-24 01:50:03,140 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 315 selfloop transitions, 34 changer transitions 3/357 dead transitions. [2024-11-24 01:50:03,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 357 transitions, 4411 flow [2024-11-24 01:50:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:50:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:50:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-11-24 01:50:03,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.390495867768595 [2024-11-24 01:50:03,142 INFO L175 Difference]: Start difference. First operand has 331 places, 314 transitions, 3345 flow. Second operand 11 states and 189 transitions. [2024-11-24 01:50:03,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 357 transitions, 4411 flow [2024-11-24 01:50:03,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 357 transitions, 4243 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-11-24 01:50:03,857 INFO L231 Difference]: Finished difference. Result has 335 places, 316 transitions, 3271 flow [2024-11-24 01:50:03,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3271, PETRI_PLACES=335, PETRI_TRANSITIONS=316} [2024-11-24 01:50:03,858 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-11-24 01:50:03,858 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 316 transitions, 3271 flow [2024-11-24 01:50:03,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:03,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:50:03,858 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:03,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-24 01:50:03,859 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:50:03,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1329844095, now seen corresponding path program 1 times [2024-11-24 01:50:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:03,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285002081] [2024-11-24 01:50:03,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:03,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:50:03,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285002081] [2024-11-24 01:50:03,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285002081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:50:03,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:50:03,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:50:03,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112435518] [2024-11-24 01:50:03,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:50:03,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:50:03,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:03,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:50:03,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:50:03,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:50:03,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 316 transitions, 3271 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:03,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:50:03,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:50:03,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:50:05,680 INFO L124 PetriNetUnfolderBase]: 4974/8923 cut-off events. [2024-11-24 01:50:05,680 INFO L125 PetriNetUnfolderBase]: For 427569/428996 co-relation queries the response was YES. [2024-11-24 01:50:05,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51834 conditions, 8923 events. 4974/8923 cut-off events. For 427569/428996 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 69747 event pairs, 1804 based on Foata normal form. 461/9123 useless extension candidates. Maximal degree in co-relation 51678. Up to 3738 conditions per place. [2024-11-24 01:50:05,838 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 419 selfloop transitions, 34 changer transitions 0/497 dead transitions. [2024-11-24 01:50:05,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 497 transitions, 6382 flow [2024-11-24 01:50:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:50:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:50:05,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-24 01:50:05,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-11-24 01:50:05,839 INFO L175 Difference]: Start difference. First operand has 335 places, 316 transitions, 3271 flow. Second operand 4 states and 106 transitions. [2024-11-24 01:50:05,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 497 transitions, 6382 flow [2024-11-24 01:50:07,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 497 transitions, 6290 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-24 01:50:07,243 INFO L231 Difference]: Finished difference. Result has 332 places, 327 transitions, 3616 flow [2024-11-24 01:50:07,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3616, PETRI_PLACES=332, PETRI_TRANSITIONS=327} [2024-11-24 01:50:07,244 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-11-24 01:50:07,244 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 327 transitions, 3616 flow [2024-11-24 01:50:07,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:07,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:50:07,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:07,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-24 01:50:07,244 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:50:07,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1559251573, now seen corresponding path program 1 times [2024-11-24 01:50:07,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:07,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287805992] [2024-11-24 01:50:07,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:07,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:50:07,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287805992] [2024-11-24 01:50:07,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287805992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:07,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942223966] [2024-11-24 01:50:07,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:07,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:07,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:07,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:07,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:50:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:07,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:50:07,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:50:07,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:50:07,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942223966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:07,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:07,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-24 01:50:07,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59030620] [2024-11-24 01:50:07,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:07,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:50:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:07,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:50:07,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:50:07,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:50:07,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 327 transitions, 3616 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:07,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:50:07,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:50:07,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:50:12,382 INFO L124 PetriNetUnfolderBase]: 9443/17227 cut-off events. [2024-11-24 01:50:12,382 INFO L125 PetriNetUnfolderBase]: For 760256/762553 co-relation queries the response was YES. [2024-11-24 01:50:12,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102769 conditions, 17227 events. 9443/17227 cut-off events. For 760256/762553 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 151569 event pairs, 5598 based on Foata normal form. 384/17014 useless extension candidates. Maximal degree in co-relation 102611. Up to 7851 conditions per place. [2024-11-24 01:50:12,754 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 552 selfloop transitions, 6 changer transitions 12/614 dead transitions. [2024-11-24 01:50:12,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 614 transitions, 8047 flow [2024-11-24 01:50:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:50:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 01:50:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-11-24 01:50:12,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-24 01:50:12,755 INFO L175 Difference]: Start difference. First operand has 332 places, 327 transitions, 3616 flow. Second operand 7 states and 133 transitions. [2024-11-24 01:50:12,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 614 transitions, 8047 flow [2024-11-24 01:50:14,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 614 transitions, 7703 flow, removed 148 selfloop flow, removed 6 redundant places. [2024-11-24 01:50:14,890 INFO L231 Difference]: Finished difference. Result has 336 places, 331 transitions, 3502 flow [2024-11-24 01:50:14,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3502, PETRI_PLACES=336, PETRI_TRANSITIONS=331} [2024-11-24 01:50:14,891 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-11-24 01:50:14,891 INFO L471 AbstractCegarLoop]: Abstraction has has 336 places, 331 transitions, 3502 flow [2024-11-24 01:50:14,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:14,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:50:14,891 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:14,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:50:15,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-24 01:50:15,092 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:50:15,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash 48285626, now seen corresponding path program 2 times [2024-11-24 01:50:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:15,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154754517] [2024-11-24 01:50:15,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:50:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:15,114 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:50:15,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:50:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:50:15,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:15,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154754517] [2024-11-24 01:50:15,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154754517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:50:15,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:50:15,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:50:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930151406] [2024-11-24 01:50:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:50:15,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:50:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:15,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:50:15,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:50:15,182 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-24 01:50:15,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 331 transitions, 3502 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:15,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:50:15,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-24 01:50:15,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:50:19,766 INFO L124 PetriNetUnfolderBase]: 10183/18220 cut-off events. [2024-11-24 01:50:19,767 INFO L125 PetriNetUnfolderBase]: For 602440/604318 co-relation queries the response was YES. [2024-11-24 01:50:20,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100362 conditions, 18220 events. 10183/18220 cut-off events. For 602440/604318 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 156363 event pairs, 4592 based on Foata normal form. 129/18104 useless extension candidates. Maximal degree in co-relation 100205. Up to 15449 conditions per place. [2024-11-24 01:50:20,144 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 324 selfloop transitions, 6 changer transitions 0/373 dead transitions. [2024-11-24 01:50:20,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 373 transitions, 4592 flow [2024-11-24 01:50:20,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:50:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:50:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-24 01:50:20,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-11-24 01:50:20,145 INFO L175 Difference]: Start difference. First operand has 336 places, 331 transitions, 3502 flow. Second operand 5 states and 112 transitions. [2024-11-24 01:50:20,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 373 transitions, 4592 flow [2024-11-24 01:50:22,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 373 transitions, 4535 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-24 01:50:22,444 INFO L231 Difference]: Finished difference. Result has 338 places, 333 transitions, 3479 flow [2024-11-24 01:50:22,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3479, PETRI_PLACES=338, PETRI_TRANSITIONS=333} [2024-11-24 01:50:22,445 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-11-24 01:50:22,445 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 333 transitions, 3479 flow [2024-11-24 01:50:22,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:22,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:50:22,445 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:22,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-24 01:50:22,445 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:50:22,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash -637021035, now seen corresponding path program 1 times [2024-11-24 01:50:22,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248787066] [2024-11-24 01:50:22,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:22,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:50:22,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:22,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248787066] [2024-11-24 01:50:22,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248787066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:22,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936885871] [2024-11-24 01:50:22,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:22,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:22,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:22,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:22,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:50:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:22,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:50:22,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:50:22,741 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:50:22,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936885871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:50:22,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:50:22,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-24 01:50:22,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147321603] [2024-11-24 01:50:22,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:50:22,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:50:22,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:22,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:50:22,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:50:22,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:50:22,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 333 transitions, 3479 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:22,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:50:22,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:50:22,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:50:25,981 INFO L124 PetriNetUnfolderBase]: 7149/13435 cut-off events. [2024-11-24 01:50:25,981 INFO L125 PetriNetUnfolderBase]: For 633254/637574 co-relation queries the response was YES. [2024-11-24 01:50:26,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87050 conditions, 13435 events. 7149/13435 cut-off events. For 633254/637574 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 111000 event pairs, 3503 based on Foata normal form. 907/14299 useless extension candidates. Maximal degree in co-relation 86893. Up to 6218 conditions per place. [2024-11-24 01:50:26,266 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 101 selfloop transitions, 9 changer transitions 136/252 dead transitions. [2024-11-24 01:50:26,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 252 transitions, 3669 flow [2024-11-24 01:50:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:50:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:50:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-24 01:50:26,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-24 01:50:26,267 INFO L175 Difference]: Start difference. First operand has 338 places, 333 transitions, 3479 flow. Second operand 4 states and 112 transitions. [2024-11-24 01:50:26,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 252 transitions, 3669 flow [2024-11-24 01:50:27,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 252 transitions, 3522 flow, removed 15 selfloop flow, removed 15 redundant places. [2024-11-24 01:50:27,919 INFO L231 Difference]: Finished difference. Result has 328 places, 64 transitions, 905 flow [2024-11-24 01:50:27,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=905, PETRI_PLACES=328, PETRI_TRANSITIONS=64} [2024-11-24 01:50:27,919 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-11-24 01:50:27,919 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 64 transitions, 905 flow [2024-11-24 01:50:27,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:27,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:50:27,920 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:27,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:50:28,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-24 01:50:28,120 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:50:28,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:28,121 INFO L85 PathProgramCache]: Analyzing trace with hash -574984488, now seen corresponding path program 1 times [2024-11-24 01:50:28,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:28,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699426662] [2024-11-24 01:50:28,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:28,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:50:28,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:28,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699426662] [2024-11-24 01:50:28,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699426662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:28,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068138646] [2024-11-24 01:50:28,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:28,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:28,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:28,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:28,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:50:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:28,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:50:28,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:50:28,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:50:28,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068138646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:28,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-24 01:50:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232826869] [2024-11-24 01:50:28,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:28,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:50:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:28,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:50:28,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:50:28,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-24 01:50:28,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 64 transitions, 905 flow. Second operand has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:28,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:50:28,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-24 01:50:28,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:50:32,108 INFO L124 PetriNetUnfolderBase]: 6401/10800 cut-off events. [2024-11-24 01:50:32,108 INFO L125 PetriNetUnfolderBase]: For 725040/729360 co-relation queries the response was YES. [2024-11-24 01:50:32,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88181 conditions, 10800 events. 6401/10800 cut-off events. For 725040/729360 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 71898 event pairs, 4332 based on Foata normal form. 195/10990 useless extension candidates. Maximal degree in co-relation 88031. Up to 7143 conditions per place. [2024-11-24 01:50:32,294 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 56 selfloop transitions, 3 changer transitions 59/124 dead transitions. [2024-11-24 01:50:32,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 124 transitions, 1905 flow [2024-11-24 01:50:32,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:50:32,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:50:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-24 01:50:32,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-24 01:50:32,296 INFO L175 Difference]: Start difference. First operand has 328 places, 64 transitions, 905 flow. Second operand 6 states and 120 transitions. [2024-11-24 01:50:32,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 124 transitions, 1905 flow [2024-11-24 01:50:33,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 124 transitions, 946 flow, removed 272 selfloop flow, removed 115 redundant places. [2024-11-24 01:50:33,308 INFO L231 Difference]: Finished difference. Result has 93 places, 65 transitions, 382 flow [2024-11-24 01:50:33,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=93, PETRI_TRANSITIONS=65} [2024-11-24 01:50:33,308 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-11-24 01:50:33,308 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 65 transitions, 382 flow [2024-11-24 01:50:33,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:33,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:50:33,309 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:33,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:50:33,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:33,509 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:50:33,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1292028471, now seen corresponding path program 2 times [2024-11-24 01:50:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:33,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758588324] [2024-11-24 01:50:33,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:50:33,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:33,550 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:50:33,550 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:50:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:34,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758588324] [2024-11-24 01:50:34,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758588324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54651008] [2024-11-24 01:50:34,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:50:34,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:34,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:34,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:34,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:50:35,078 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:50:35,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:50:35,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 01:50:35,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:35,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2024-11-24 01:50:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:50:35,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:35,711 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-24 01:50:35,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-24 01:50:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:50:36,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54651008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:36,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:36,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 10] total 32 [2024-11-24 01:50:36,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776530144] [2024-11-24 01:50:36,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:36,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 01:50:36,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:36,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 01:50:36,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2024-11-24 01:50:36,276 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 44 [2024-11-24 01:50:36,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 65 transitions, 382 flow. Second operand has 32 states, 32 states have (on average 8.125) internal successors, (260), 32 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:36,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:50:36,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 44 [2024-11-24 01:50:36,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:50:45,839 INFO L124 PetriNetUnfolderBase]: 40539/59101 cut-off events. [2024-11-24 01:50:45,839 INFO L125 PetriNetUnfolderBase]: For 92117/92117 co-relation queries the response was YES. [2024-11-24 01:50:46,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184093 conditions, 59101 events. 40539/59101 cut-off events. For 92117/92117 co-relation queries the response was YES. Maximal size of possible extension queue 1857. Compared 395519 event pairs, 3025 based on Foata normal form. 1398/57584 useless extension candidates. Maximal degree in co-relation 184053. Up to 9696 conditions per place. [2024-11-24 01:50:46,491 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 618 selfloop transitions, 95 changer transitions 64/779 dead transitions. [2024-11-24 01:50:46,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 779 transitions, 5497 flow [2024-11-24 01:50:46,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-24 01:50:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-24 01:50:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 898 transitions. [2024-11-24 01:50:46,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3924825174825175 [2024-11-24 01:50:46,494 INFO L175 Difference]: Start difference. First operand has 93 places, 65 transitions, 382 flow. Second operand 52 states and 898 transitions. [2024-11-24 01:50:46,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 779 transitions, 5497 flow [2024-11-24 01:50:46,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 779 transitions, 5437 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-11-24 01:50:46,591 INFO L231 Difference]: Finished difference. Result has 177 places, 155 transitions, 1500 flow [2024-11-24 01:50:46,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1500, PETRI_PLACES=177, PETRI_TRANSITIONS=155} [2024-11-24 01:50:46,591 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-11-24 01:50:46,591 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 155 transitions, 1500 flow [2024-11-24 01:50:46,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.125) internal successors, (260), 32 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:46,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:50:46,592 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:46,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:50:46,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-24 01:50:46,792 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:50:46,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash -194443405, now seen corresponding path program 3 times [2024-11-24 01:50:46,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:46,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529984671] [2024-11-24 01:50:46,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:50:46,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:46,819 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 01:50:46,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:50:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:50:47,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:47,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529984671] [2024-11-24 01:50:47,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529984671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:47,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508666786] [2024-11-24 01:50:47,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:50:47,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:47,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:47,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:47,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9ccfa5-13b7-43df-819a-1fd4d1ff18b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:50:47,489 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 01:50:47,490 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:50:47,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 01:50:47,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:47,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-24 01:50:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:50:47,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:48,004 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-24 01:50:48,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-24 01:50:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:50:48,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508666786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:50:48,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:50:48,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-24 01:50:48,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140683373] [2024-11-24 01:50:48,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:50:48,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 01:50:48,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:48,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 01:50:48,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:50:48,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 44 [2024-11-24 01:50:48,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 155 transitions, 1500 flow. Second operand has 25 states, 25 states have (on average 8.72) internal successors, (218), 25 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:50:48,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:50:48,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 44 [2024-11-24 01:50:48,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand