./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/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_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/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_094ac009-3c5b-448a-8bc3-f3c902a633f9/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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:05:35,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:05:35,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 02:05:35,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:05:35,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:05:35,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:05:35,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:05:35,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:05:35,788 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:05:35,788 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:05:35,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:05:35,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:05:35,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:05:35,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:05:35,789 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:05:35,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:05:35,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:05:35,789 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:05:35,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:05:35,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:05:35,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:05:35,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:05:35,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:05:35,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:05:35,790 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:05:35,790 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:05:35,791 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:05:35,791 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:05:35,791 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:05:35,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:05:35,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:05:35,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:05:35,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:35,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:05:35,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:05:35,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:05:35,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:05:35,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:35,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:05:35,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:05:35,796 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_094ac009-3c5b-448a-8bc3-f3c902a633f9/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 -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-11-24 02:05:36,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:05:36,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:05:36,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:05:36,164 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:05:36,165 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:05:36,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-24 02:05:39,163 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/data/6c70c52a6/ce195a41f6e247d9a1c292238aec1359/FLAG579eb709c [2024-11-24 02:05:39,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:05:39,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-24 02:05:39,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/data/6c70c52a6/ce195a41f6e247d9a1c292238aec1359/FLAG579eb709c [2024-11-24 02:05:39,544 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/data/6c70c52a6/ce195a41f6e247d9a1c292238aec1359 [2024-11-24 02:05:39,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:05:39,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:05:39,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:05:39,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:05:39,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:05:39,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:39,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc4a375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39, skipping insertion in model container [2024-11-24 02:05:39,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:39,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:05:39,830 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_094ac009-3c5b-448a-8bc3-f3c902a633f9/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-24 02:05:39,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:05:39,850 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:05:39,876 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_094ac009-3c5b-448a-8bc3-f3c902a633f9/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-24 02:05:39,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:05:39,916 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:05:39,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39 WrapperNode [2024-11-24 02:05:39,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:05:39,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:05:39,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:05:39,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:05:39,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:39,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:39,977 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 165 [2024-11-24 02:05:39,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:05:39,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:05:39,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:05:39,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:05:39,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:39,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:39,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,012 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-24 02:05:40,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,027 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:05:40,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:05:40,049 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:05:40,049 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:05:40,050 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (1/1) ... [2024-11-24 02:05:40,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:40,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:40,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:05:40,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:05:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:05:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 02:05:40,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 02:05:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 02:05:40,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 02:05:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:05:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 02:05:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 02:05:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 02:05:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 02:05:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:05:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:05:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 02:05:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 02:05:40,130 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 02:05:40,251 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:05:40,253 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:05:40,654 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 02:05:40,654 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:05:41,084 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:05:41,085 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 02:05:41,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:05:41 BoogieIcfgContainer [2024-11-24 02:05:41,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:05:41,089 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:05:41,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:05:41,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:05:41,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:05:39" (1/3) ... [2024-11-24 02:05:41,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54769165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:05:41, skipping insertion in model container [2024-11-24 02:05:41,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:39" (2/3) ... [2024-11-24 02:05:41,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54769165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:05:41, skipping insertion in model container [2024-11-24 02:05:41,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:05:41" (3/3) ... [2024-11-24 02:05:41,100 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-11-24 02:05:41,124 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:05:41,126 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-opt-symm.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-24 02:05:41,126 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 02:05:41,203 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-24 02:05:41,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-11-24 02:05:41,302 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-24 02:05:41,306 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 02:05:41,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-24 02:05:41,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-11-24 02:05:41,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-11-24 02:05:41,325 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:05:41,338 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;@37172430, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:05:41,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-24 02:05:41,358 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 02:05:41,359 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-11-24 02:05:41,359 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 02:05:41,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:41,360 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:41,361 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:41,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash -390798447, now seen corresponding path program 1 times [2024-11-24 02:05:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867335877] [2024-11-24 02:05:41,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:41,822 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 02:05:41,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867335877] [2024-11-24 02:05:41,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867335877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:41,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:41,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:05:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869792978] [2024-11-24 02:05:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:41,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:05:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:41,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:05:41,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:05:41,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:41,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:41,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:41,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:41,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:42,244 INFO L124 PetriNetUnfolderBase]: 237/396 cut-off events. [2024-11-24 02:05:42,244 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-24 02:05:42,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 396 events. 237/396 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1440 event pairs, 68 based on Foata normal form. 5/301 useless extension candidates. Maximal degree in co-relation 720. Up to 183 conditions per place. [2024-11-24 02:05:42,250 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 46 selfloop transitions, 5 changer transitions 2/54 dead transitions. [2024-11-24 02:05:42,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 244 flow [2024-11-24 02:05:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:05:42,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 02:05:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-24 02:05:42,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-24 02:05:42,267 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 5 states and 69 transitions. [2024-11-24 02:05:42,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 244 flow [2024-11-24 02:05:42,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-24 02:05:42,278 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 78 flow [2024-11-24 02:05:42,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2024-11-24 02:05:42,287 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2024-11-24 02:05:42,288 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 78 flow [2024-11-24 02:05:42,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:42,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:42,288 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:42,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:05:42,289 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:42,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash -638126291, now seen corresponding path program 2 times [2024-11-24 02:05:42,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141847292] [2024-11-24 02:05:42,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:05:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:42,350 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:05:42,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:42,474 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 02:05:42,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141847292] [2024-11-24 02:05:42,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141847292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:42,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:42,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:05:42,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972505310] [2024-11-24 02:05:42,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:42,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:05:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:42,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:05:42,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:05:42,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:42,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:42,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:42,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:42,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:42,805 INFO L124 PetriNetUnfolderBase]: 461/788 cut-off events. [2024-11-24 02:05:42,805 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-24 02:05:42,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 788 events. 461/788 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3344 event pairs, 176 based on Foata normal form. 4/691 useless extension candidates. Maximal degree in co-relation 614. Up to 395 conditions per place. [2024-11-24 02:05:42,818 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 50 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-11-24 02:05:42,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 56 transitions, 275 flow [2024-11-24 02:05:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:05:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 02:05:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-11-24 02:05:42,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-24 02:05:42,822 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 78 flow. Second operand 5 states and 65 transitions. [2024-11-24 02:05:42,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 56 transitions, 275 flow [2024-11-24 02:05:42,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 56 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 02:05:42,825 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 96 flow [2024-11-24 02:05:42,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-24 02:05:42,826 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2024-11-24 02:05:42,826 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 96 flow [2024-11-24 02:05:42,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:42,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:42,827 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:42,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:05:42,827 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:42,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:42,830 INFO L85 PathProgramCache]: Analyzing trace with hash 284563489, now seen corresponding path program 3 times [2024-11-24 02:05:42,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:42,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831582783] [2024-11-24 02:05:42,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:05:42,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:42,876 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 02:05:42,876 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:43,025 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 02:05:43,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:43,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831582783] [2024-11-24 02:05:43,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831582783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:43,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:43,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:05:43,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085666059] [2024-11-24 02:05:43,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:43,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:05:43,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:43,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:05:43,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:05:43,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:43,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:43,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:43,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:43,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:43,366 INFO L124 PetriNetUnfolderBase]: 601/1029 cut-off events. [2024-11-24 02:05:43,366 INFO L125 PetriNetUnfolderBase]: For 457/457 co-relation queries the response was YES. [2024-11-24 02:05:43,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 1029 events. 601/1029 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4721 event pairs, 207 based on Foata normal form. 23/1051 useless extension candidates. Maximal degree in co-relation 885. Up to 766 conditions per place. [2024-11-24 02:05:43,382 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 45 selfloop transitions, 4 changer transitions 2/52 dead transitions. [2024-11-24 02:05:43,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 273 flow [2024-11-24 02:05:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:05:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:05:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-24 02:05:43,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-11-24 02:05:43,385 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 96 flow. Second operand 4 states and 58 transitions. [2024-11-24 02:05:43,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 273 flow [2024-11-24 02:05:43,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 02:05:43,390 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 134 flow [2024-11-24 02:05:43,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-24 02:05:43,391 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-11-24 02:05:43,391 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 134 flow [2024-11-24 02:05:43,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:43,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:43,391 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:43,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:05:43,394 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:43,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 103773553, now seen corresponding path program 4 times [2024-11-24 02:05:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:43,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537001354] [2024-11-24 02:05:43,396 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:05:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:43,428 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:05:43,428 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:43,508 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 02:05:43,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:43,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537001354] [2024-11-24 02:05:43,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537001354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:43,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:43,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:05:43,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311925753] [2024-11-24 02:05:43,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:43,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:05:43,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:43,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:05:43,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:05:43,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:43,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:43,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:43,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:43,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:43,830 INFO L124 PetriNetUnfolderBase]: 620/1051 cut-off events. [2024-11-24 02:05:43,830 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2024-11-24 02:05:43,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1051 events. 620/1051 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4726 event pairs, 254 based on Foata normal form. 20/1069 useless extension candidates. Maximal degree in co-relation 1537. Up to 778 conditions per place. [2024-11-24 02:05:43,839 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 47 selfloop transitions, 6 changer transitions 3/57 dead transitions. [2024-11-24 02:05:43,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 336 flow [2024-11-24 02:05:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:05:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:05:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-24 02:05:43,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-24 02:05:43,842 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 134 flow. Second operand 4 states and 59 transitions. [2024-11-24 02:05:43,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 336 flow [2024-11-24 02:05:43,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 02:05:43,849 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 194 flow [2024-11-24 02:05:43,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-24 02:05:43,850 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-24 02:05:43,850 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 194 flow [2024-11-24 02:05:43,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:43,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:43,851 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:43,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:05:43,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:43,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash 251531022, now seen corresponding path program 1 times [2024-11-24 02:05:43,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:43,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844911736] [2024-11-24 02:05:43,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:43,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:43,980 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 02:05:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844911736] [2024-11-24 02:05:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844911736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:43,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:43,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:05:43,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005687904] [2024-11-24 02:05:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:43,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:05:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:43,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:05:43,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:05:43,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:43,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:43,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:43,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:43,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:44,283 INFO L124 PetriNetUnfolderBase]: 559/944 cut-off events. [2024-11-24 02:05:44,283 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2024-11-24 02:05:44,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 944 events. 559/944 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4260 event pairs, 183 based on Foata normal form. 16/958 useless extension candidates. Maximal degree in co-relation 937. Up to 479 conditions per place. [2024-11-24 02:05:44,292 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 56 selfloop transitions, 8 changer transitions 3/68 dead transitions. [2024-11-24 02:05:44,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 447 flow [2024-11-24 02:05:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:05:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:05:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-24 02:05:44,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-24 02:05:44,294 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 194 flow. Second operand 4 states and 66 transitions. [2024-11-24 02:05:44,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 447 flow [2024-11-24 02:05:44,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 441 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-24 02:05:44,304 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 210 flow [2024-11-24 02:05:44,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-24 02:05:44,305 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-24 02:05:44,307 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 210 flow [2024-11-24 02:05:44,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:44,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:44,308 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:44,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:05:44,308 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:44,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash -32405608, now seen corresponding path program 1 times [2024-11-24 02:05:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271717184] [2024-11-24 02:05:44,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:44,449 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 02:05:44,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:44,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271717184] [2024-11-24 02:05:44,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271717184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:44,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:44,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:05:44,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191239450] [2024-11-24 02:05:44,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:44,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:05:44,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:44,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:05:44,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:05:44,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:44,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:44,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:44,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:44,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:44,688 INFO L124 PetriNetUnfolderBase]: 497/831 cut-off events. [2024-11-24 02:05:44,688 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2024-11-24 02:05:44,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 831 events. 497/831 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3429 event pairs, 183 based on Foata normal form. 18/847 useless extension candidates. Maximal degree in co-relation 2284. Up to 441 conditions per place. [2024-11-24 02:05:44,695 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 52 selfloop transitions, 8 changer transitions 2/63 dead transitions. [2024-11-24 02:05:44,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 447 flow [2024-11-24 02:05:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:05:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:05:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-24 02:05:44,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-24 02:05:44,697 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 210 flow. Second operand 4 states and 62 transitions. [2024-11-24 02:05:44,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 447 flow [2024-11-24 02:05:44,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 421 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-24 02:05:44,704 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 214 flow [2024-11-24 02:05:44,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-24 02:05:44,706 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-24 02:05:44,708 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 214 flow [2024-11-24 02:05:44,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:44,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:44,708 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:44,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:05:44,709 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:44,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1701400911, now seen corresponding path program 1 times [2024-11-24 02:05:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979495399] [2024-11-24 02:05:44,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:44,856 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 02:05:44,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:44,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979495399] [2024-11-24 02:05:44,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979495399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:44,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:44,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:05:44,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143959986] [2024-11-24 02:05:44,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:44,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:05:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:44,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:05:44,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:05:44,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:44,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:44,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:44,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:44,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:45,025 INFO L124 PetriNetUnfolderBase]: 495/827 cut-off events. [2024-11-24 02:05:45,025 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2024-11-24 02:05:45,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 827 events. 495/827 cut-off events. For 1302/1302 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3401 event pairs, 332 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 1642. Up to 819 conditions per place. [2024-11-24 02:05:45,033 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-11-24 02:05:45,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 294 flow [2024-11-24 02:05:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:05:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 02:05:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-11-24 02:05:45,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-24 02:05:45,035 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 214 flow. Second operand 3 states and 37 transitions. [2024-11-24 02:05:45,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 294 flow [2024-11-24 02:05:45,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 282 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-24 02:05:45,041 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 224 flow [2024-11-24 02:05:45,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-24 02:05:45,043 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-11-24 02:05:45,044 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 224 flow [2024-11-24 02:05:45,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:45,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:45,044 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:45,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:05:45,045 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:45,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1580328509, now seen corresponding path program 1 times [2024-11-24 02:05:45,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:45,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197607973] [2024-11-24 02:05:45,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:45,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:45,220 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 02:05:45,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:45,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197607973] [2024-11-24 02:05:45,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197607973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:45,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463069876] [2024-11-24 02:05:45,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:45,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:45,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:45,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:45,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:05:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:45,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 02:05:45,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:45,419 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 02:05:45,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:45,447 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 02:05:45,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463069876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:45,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:45,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-24 02:05:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706030972] [2024-11-24 02:05:45,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:45,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:05:45,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:45,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:05:45,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:05:45,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:45,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:45,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:45,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:45,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:45,637 INFO L124 PetriNetUnfolderBase]: 495/833 cut-off events. [2024-11-24 02:05:45,638 INFO L125 PetriNetUnfolderBase]: For 1079/1079 co-relation queries the response was YES. [2024-11-24 02:05:45,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 833 events. 495/833 cut-off events. For 1079/1079 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3398 event pairs, 332 based on Foata normal form. 3/835 useless extension candidates. Maximal degree in co-relation 2434. Up to 819 conditions per place. [2024-11-24 02:05:45,644 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-11-24 02:05:45,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 336 flow [2024-11-24 02:05:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:05:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 02:05:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-11-24 02:05:45,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-24 02:05:45,646 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 224 flow. Second operand 6 states and 56 transitions. [2024-11-24 02:05:45,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 336 flow [2024-11-24 02:05:45,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 02:05:45,650 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 286 flow [2024-11-24 02:05:45,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-24 02:05:45,651 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-24 02:05:45,651 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 286 flow [2024-11-24 02:05:45,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:45,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:45,651 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:45,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:45,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 02:05:45,852 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:45,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1262343183, now seen corresponding path program 2 times [2024-11-24 02:05:45,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:45,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014555237] [2024-11-24 02:05:45,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:05:45,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:45,922 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:05:45,922 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-24 02:05:47,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014555237] [2024-11-24 02:05:47,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014555237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:47,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:47,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:05:47,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254530652] [2024-11-24 02:05:47,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:47,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:05:47,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:47,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:05:47,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:05:47,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:47,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 286 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:47,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:47,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:47,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:48,504 INFO L124 PetriNetUnfolderBase]: 681/1211 cut-off events. [2024-11-24 02:05:48,505 INFO L125 PetriNetUnfolderBase]: For 1493/1493 co-relation queries the response was YES. [2024-11-24 02:05:48,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1211 events. 681/1211 cut-off events. For 1493/1493 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5982 event pairs, 42 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 3414. Up to 223 conditions per place. [2024-11-24 02:05:48,516 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 113 selfloop transitions, 62 changer transitions 7/183 dead transitions. [2024-11-24 02:05:48,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 183 transitions, 1212 flow [2024-11-24 02:05:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 02:05:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-24 02:05:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 210 transitions. [2024-11-24 02:05:48,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-24 02:05:48,521 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 286 flow. Second operand 21 states and 210 transitions. [2024-11-24 02:05:48,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 183 transitions, 1212 flow [2024-11-24 02:05:48,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 183 transitions, 1196 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-24 02:05:48,530 INFO L231 Difference]: Finished difference. Result has 80 places, 94 transitions, 745 flow [2024-11-24 02:05:48,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=745, PETRI_PLACES=80, PETRI_TRANSITIONS=94} [2024-11-24 02:05:48,533 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2024-11-24 02:05:48,534 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 94 transitions, 745 flow [2024-11-24 02:05:48,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:48,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:48,534 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:48,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 02:05:48,534 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:48,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash 305996023, now seen corresponding path program 3 times [2024-11-24 02:05:48,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:48,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140562221] [2024-11-24 02:05:48,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:05:48,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:48,594 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 02:05:48,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-24 02:05:49,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140562221] [2024-11-24 02:05:49,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140562221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:49,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:49,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:05:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407684643] [2024-11-24 02:05:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:49,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:05:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:49,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:05:49,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:05:49,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:49,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 94 transitions, 745 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:49,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:49,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:49,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:51,860 INFO L124 PetriNetUnfolderBase]: 1246/2227 cut-off events. [2024-11-24 02:05:51,860 INFO L125 PetriNetUnfolderBase]: For 6163/6163 co-relation queries the response was YES. [2024-11-24 02:05:51,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7801 conditions, 2227 events. 1246/2227 cut-off events. For 6163/6163 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12801 event pairs, 63 based on Foata normal form. 1/2227 useless extension candidates. Maximal degree in co-relation 7727. Up to 370 conditions per place. [2024-11-24 02:05:51,881 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 177 selfloop transitions, 117 changer transitions 8/303 dead transitions. [2024-11-24 02:05:51,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 303 transitions, 2409 flow [2024-11-24 02:05:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 02:05:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-24 02:05:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 350 transitions. [2024-11-24 02:05:51,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-11-24 02:05:51,886 INFO L175 Difference]: Start difference. First operand has 80 places, 94 transitions, 745 flow. Second operand 33 states and 350 transitions. [2024-11-24 02:05:51,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 303 transitions, 2409 flow [2024-11-24 02:05:51,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 303 transitions, 2265 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-11-24 02:05:51,953 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1498 flow [2024-11-24 02:05:51,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1498, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2024-11-24 02:05:51,956 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-24 02:05:51,956 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1498 flow [2024-11-24 02:05:51,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:51,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:51,956 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:51,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 02:05:51,957 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:51,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1632262309, now seen corresponding path program 4 times [2024-11-24 02:05:51,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:51,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26691367] [2024-11-24 02:05:51,958 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:05:51,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:51,994 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:05:51,997 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-24 02:05:52,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:52,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26691367] [2024-11-24 02:05:52,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26691367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:52,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:52,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:05:52,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894350297] [2024-11-24 02:05:52,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:52,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:05:52,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:52,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:05:52,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:05:52,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:52,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 1498 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:52,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:52,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:52,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:53,935 INFO L124 PetriNetUnfolderBase]: 1371/2449 cut-off events. [2024-11-24 02:05:53,936 INFO L125 PetriNetUnfolderBase]: For 9477/9477 co-relation queries the response was YES. [2024-11-24 02:05:53,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9490 conditions, 2449 events. 1371/2449 cut-off events. For 9477/9477 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14346 event pairs, 132 based on Foata normal form. 1/2449 useless extension candidates. Maximal degree in co-relation 9406. Up to 448 conditions per place. [2024-11-24 02:05:53,963 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 156 selfloop transitions, 93 changer transitions 8/258 dead transitions. [2024-11-24 02:05:53,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 258 transitions, 2569 flow [2024-11-24 02:05:53,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 02:05:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-24 02:05:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 207 transitions. [2024-11-24 02:05:53,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43487394957983194 [2024-11-24 02:05:53,966 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1498 flow. Second operand 17 states and 207 transitions. [2024-11-24 02:05:53,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 258 transitions, 2569 flow [2024-11-24 02:05:54,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 258 transitions, 2369 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-11-24 02:05:54,043 INFO L231 Difference]: Finished difference. Result has 129 places, 166 transitions, 1674 flow [2024-11-24 02:05:54,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1674, PETRI_PLACES=129, PETRI_TRANSITIONS=166} [2024-11-24 02:05:54,044 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 103 predicate places. [2024-11-24 02:05:54,044 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 166 transitions, 1674 flow [2024-11-24 02:05:54,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:54,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:54,044 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:54,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 02:05:54,045 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:54,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1080011989, now seen corresponding path program 5 times [2024-11-24 02:05:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:54,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972303168] [2024-11-24 02:05:54,046 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:05:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:54,077 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-24 02:05:54,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 02:05:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972303168] [2024-11-24 02:05:54,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972303168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:54,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323304117] [2024-11-24 02:05:54,218 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:05:54,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:54,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:54,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:54,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:05:54,360 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-24 02:05:54,360 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:54,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 02:05:54,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 02:05:54,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 02:05:54,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323304117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:54,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:54,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-24 02:05:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122642906] [2024-11-24 02:05:54,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:54,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 02:05:54,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:54,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 02:05:54,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:05:54,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:54,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 166 transitions, 1674 flow. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:54,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:54,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:54,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:54,988 INFO L124 PetriNetUnfolderBase]: 1361/2430 cut-off events. [2024-11-24 02:05:54,988 INFO L125 PetriNetUnfolderBase]: For 9968/9968 co-relation queries the response was YES. [2024-11-24 02:05:55,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9980 conditions, 2430 events. 1361/2430 cut-off events. For 9968/9968 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14164 event pairs, 864 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 9885. Up to 2391 conditions per place. [2024-11-24 02:05:55,018 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 155 selfloop transitions, 12 changer transitions 0/168 dead transitions. [2024-11-24 02:05:55,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 168 transitions, 2020 flow [2024-11-24 02:05:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 02:05:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 02:05:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2024-11-24 02:05:55,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29081632653061223 [2024-11-24 02:05:55,019 INFO L175 Difference]: Start difference. First operand has 129 places, 166 transitions, 1674 flow. Second operand 7 states and 57 transitions. [2024-11-24 02:05:55,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 168 transitions, 2020 flow [2024-11-24 02:05:55,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 168 transitions, 1894 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-11-24 02:05:55,095 INFO L231 Difference]: Finished difference. Result has 125 places, 168 transitions, 1594 flow [2024-11-24 02:05:55,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1594, PETRI_PLACES=125, PETRI_TRANSITIONS=168} [2024-11-24 02:05:55,096 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2024-11-24 02:05:55,096 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 168 transitions, 1594 flow [2024-11-24 02:05:55,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:55,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:55,097 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:55,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 02:05:55,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-24 02:05:55,298 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:55,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1938885383, now seen corresponding path program 6 times [2024-11-24 02:05:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:55,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535943687] [2024-11-24 02:05:55,298 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:05:55,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:55,330 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 02:05:55,330 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:05:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:05:56,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:56,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535943687] [2024-11-24 02:05:56,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535943687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:56,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:56,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:05:56,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079849674] [2024-11-24 02:05:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:56,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:05:56,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:56,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:05:56,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:05:56,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:56,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 168 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:56,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:56,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:56,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:05:57,896 INFO L124 PetriNetUnfolderBase]: 1391/2482 cut-off events. [2024-11-24 02:05:57,897 INFO L125 PetriNetUnfolderBase]: For 8220/8220 co-relation queries the response was YES. [2024-11-24 02:05:57,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9576 conditions, 2482 events. 1391/2482 cut-off events. For 8220/8220 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14523 event pairs, 77 based on Foata normal form. 1/2483 useless extension candidates. Maximal degree in co-relation 9472. Up to 444 conditions per place. [2024-11-24 02:05:57,924 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 151 selfloop transitions, 128 changer transitions 7/287 dead transitions. [2024-11-24 02:05:57,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 287 transitions, 2696 flow [2024-11-24 02:05:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 02:05:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-24 02:05:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2024-11-24 02:05:57,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3637566137566138 [2024-11-24 02:05:57,927 INFO L175 Difference]: Start difference. First operand has 125 places, 168 transitions, 1594 flow. Second operand 27 states and 275 transitions. [2024-11-24 02:05:57,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 287 transitions, 2696 flow [2024-11-24 02:05:57,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 287 transitions, 2672 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-24 02:05:57,989 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1892 flow [2024-11-24 02:05:57,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1892, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-11-24 02:05:57,992 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 123 predicate places. [2024-11-24 02:05:57,993 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1892 flow [2024-11-24 02:05:57,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:57,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:05:57,993 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:57,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 02:05:57,993 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:05:57,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1549539519, now seen corresponding path program 7 times [2024-11-24 02:05:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382208064] [2024-11-24 02:05:57,994 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:05:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:05:58,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:58,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382208064] [2024-11-24 02:05:58,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382208064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:58,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:58,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:05:58,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89227995] [2024-11-24 02:05:58,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:58,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:05:58,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:58,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:05:58,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:05:58,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:05:58,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1892 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:58,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:05:58,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:05:58,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:00,774 INFO L124 PetriNetUnfolderBase]: 1531/2742 cut-off events. [2024-11-24 02:06:00,775 INFO L125 PetriNetUnfolderBase]: For 11429/11429 co-relation queries the response was YES. [2024-11-24 02:06:00,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11514 conditions, 2742 events. 1531/2742 cut-off events. For 11429/11429 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 16527 event pairs, 116 based on Foata normal form. 1/2743 useless extension candidates. Maximal degree in co-relation 11418. Up to 592 conditions per place. [2024-11-24 02:06:00,809 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 156 selfloop transitions, 146 changer transitions 7/310 dead transitions. [2024-11-24 02:06:00,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 310 transitions, 3286 flow [2024-11-24 02:06:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 02:06:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-24 02:06:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 270 transitions. [2024-11-24 02:06:00,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-11-24 02:06:00,811 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1892 flow. Second operand 25 states and 270 transitions. [2024-11-24 02:06:00,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 310 transitions, 3286 flow [2024-11-24 02:06:00,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 310 transitions, 2946 flow, removed 19 selfloop flow, removed 23 redundant places. [2024-11-24 02:06:00,888 INFO L231 Difference]: Finished difference. Result has 158 places, 208 transitions, 2379 flow [2024-11-24 02:06:00,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2379, PETRI_PLACES=158, PETRI_TRANSITIONS=208} [2024-11-24 02:06:00,889 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 132 predicate places. [2024-11-24 02:06:00,890 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 208 transitions, 2379 flow [2024-11-24 02:06:00,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:00,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:00,891 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:00,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 02:06:00,891 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:00,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash -363096629, now seen corresponding path program 8 times [2024-11-24 02:06:00,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:00,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294786955] [2024-11-24 02:06:00,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:06:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:00,938 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:06:00,941 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:01,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:01,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294786955] [2024-11-24 02:06:01,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294786955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:01,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:01,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:01,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578569029] [2024-11-24 02:06:01,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:01,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:01,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:01,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:01,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:01,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:01,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 208 transitions, 2379 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:01,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:01,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:01,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:03,598 INFO L124 PetriNetUnfolderBase]: 1556/2791 cut-off events. [2024-11-24 02:06:03,598 INFO L125 PetriNetUnfolderBase]: For 12021/12021 co-relation queries the response was YES. [2024-11-24 02:06:03,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12217 conditions, 2791 events. 1556/2791 cut-off events. For 12021/12021 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16990 event pairs, 90 based on Foata normal form. 1/2792 useless extension candidates. Maximal degree in co-relation 12114. Up to 564 conditions per place. [2024-11-24 02:06:03,630 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 161 selfloop transitions, 152 changer transitions 7/321 dead transitions. [2024-11-24 02:06:03,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 321 transitions, 3532 flow [2024-11-24 02:06:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 02:06:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-24 02:06:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 268 transitions. [2024-11-24 02:06:03,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-11-24 02:06:03,635 INFO L175 Difference]: Start difference. First operand has 158 places, 208 transitions, 2379 flow. Second operand 24 states and 268 transitions. [2024-11-24 02:06:03,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 321 transitions, 3532 flow [2024-11-24 02:06:03,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 321 transitions, 3369 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-11-24 02:06:03,748 INFO L231 Difference]: Finished difference. Result has 180 places, 221 transitions, 2737 flow [2024-11-24 02:06:03,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2737, PETRI_PLACES=180, PETRI_TRANSITIONS=221} [2024-11-24 02:06:03,749 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 154 predicate places. [2024-11-24 02:06:03,750 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 221 transitions, 2737 flow [2024-11-24 02:06:03,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:03,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:03,750 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:03,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 02:06:03,751 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:03,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1137112595, now seen corresponding path program 9 times [2024-11-24 02:06:03,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:03,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33550020] [2024-11-24 02:06:03,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:06:03,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:03,786 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 02:06:03,786 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:04,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:04,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33550020] [2024-11-24 02:06:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33550020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:04,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:04,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487851126] [2024-11-24 02:06:04,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:04,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:04,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:04,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:04,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:04,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 221 transitions, 2737 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:04,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:04,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:04,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:05,709 INFO L124 PetriNetUnfolderBase]: 1562/2802 cut-off events. [2024-11-24 02:06:05,710 INFO L125 PetriNetUnfolderBase]: For 14338/14338 co-relation queries the response was YES. [2024-11-24 02:06:05,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12862 conditions, 2802 events. 1562/2802 cut-off events. For 14338/14338 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 17041 event pairs, 127 based on Foata normal form. 1/2803 useless extension candidates. Maximal degree in co-relation 12754. Up to 564 conditions per place. [2024-11-24 02:06:05,737 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 164 selfloop transitions, 152 changer transitions 7/324 dead transitions. [2024-11-24 02:06:05,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 324 transitions, 3778 flow [2024-11-24 02:06:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 02:06:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-24 02:06:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 278 transitions. [2024-11-24 02:06:05,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39714285714285713 [2024-11-24 02:06:05,742 INFO L175 Difference]: Start difference. First operand has 180 places, 221 transitions, 2737 flow. Second operand 25 states and 278 transitions. [2024-11-24 02:06:05,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 324 transitions, 3778 flow [2024-11-24 02:06:05,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 324 transitions, 3585 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-11-24 02:06:05,835 INFO L231 Difference]: Finished difference. Result has 193 places, 222 transitions, 2897 flow [2024-11-24 02:06:05,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2897, PETRI_PLACES=193, PETRI_TRANSITIONS=222} [2024-11-24 02:06:05,836 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 167 predicate places. [2024-11-24 02:06:05,836 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 222 transitions, 2897 flow [2024-11-24 02:06:05,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:05,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:05,836 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:05,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 02:06:05,837 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:05,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2081639685, now seen corresponding path program 10 times [2024-11-24 02:06:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:05,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229249889] [2024-11-24 02:06:05,838 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:06:05,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:05,859 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:06:05,859 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:06,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:06,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229249889] [2024-11-24 02:06:06,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229249889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:06,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:06,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:06:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914019032] [2024-11-24 02:06:06,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:06,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:06:06,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:06,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:06:06,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:06:06,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:06,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 222 transitions, 2897 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:06,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:06,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:06,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:07,371 INFO L124 PetriNetUnfolderBase]: 1733/3123 cut-off events. [2024-11-24 02:06:07,371 INFO L125 PetriNetUnfolderBase]: For 17275/17275 co-relation queries the response was YES. [2024-11-24 02:06:07,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14553 conditions, 3123 events. 1733/3123 cut-off events. For 17275/17275 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 19664 event pairs, 234 based on Foata normal form. 1/3124 useless extension candidates. Maximal degree in co-relation 14445. Up to 898 conditions per place. [2024-11-24 02:06:07,410 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 187 selfloop transitions, 142 changer transitions 9/339 dead transitions. [2024-11-24 02:06:07,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 339 transitions, 4217 flow [2024-11-24 02:06:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 02:06:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-24 02:06:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 240 transitions. [2024-11-24 02:06:07,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-24 02:06:07,412 INFO L175 Difference]: Start difference. First operand has 193 places, 222 transitions, 2897 flow. Second operand 20 states and 240 transitions. [2024-11-24 02:06:07,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 339 transitions, 4217 flow [2024-11-24 02:06:07,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 339 transitions, 3836 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-11-24 02:06:07,528 INFO L231 Difference]: Finished difference. Result has 196 places, 242 transitions, 3226 flow [2024-11-24 02:06:07,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3226, PETRI_PLACES=196, PETRI_TRANSITIONS=242} [2024-11-24 02:06:07,529 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 170 predicate places. [2024-11-24 02:06:07,530 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 242 transitions, 3226 flow [2024-11-24 02:06:07,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:07,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:07,531 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:07,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 02:06:07,531 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:07,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1311537985, now seen corresponding path program 11 times [2024-11-24 02:06:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:07,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716236202] [2024-11-24 02:06:07,532 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:06:07,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:07,578 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-24 02:06:07,578 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:08,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:08,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716236202] [2024-11-24 02:06:08,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716236202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:08,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:08,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743886347] [2024-11-24 02:06:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:08,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:08,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:08,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:08,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:08,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:08,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 242 transitions, 3226 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:08,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:08,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:08,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:09,630 INFO L124 PetriNetUnfolderBase]: 1828/3341 cut-off events. [2024-11-24 02:06:09,630 INFO L125 PetriNetUnfolderBase]: For 18966/18966 co-relation queries the response was YES. [2024-11-24 02:06:09,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15234 conditions, 3341 events. 1828/3341 cut-off events. For 18966/18966 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 21639 event pairs, 213 based on Foata normal form. 1/3342 useless extension candidates. Maximal degree in co-relation 15120. Up to 1037 conditions per place. [2024-11-24 02:06:09,663 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 185 selfloop transitions, 122 changer transitions 7/315 dead transitions. [2024-11-24 02:06:09,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 315 transitions, 4192 flow [2024-11-24 02:06:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 02:06:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-24 02:06:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 193 transitions. [2024-11-24 02:06:09,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38293650793650796 [2024-11-24 02:06:09,665 INFO L175 Difference]: Start difference. First operand has 196 places, 242 transitions, 3226 flow. Second operand 18 states and 193 transitions. [2024-11-24 02:06:09,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 315 transitions, 4192 flow [2024-11-24 02:06:09,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 315 transitions, 4081 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-11-24 02:06:09,812 INFO L231 Difference]: Finished difference. Result has 207 places, 246 transitions, 3445 flow [2024-11-24 02:06:09,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3445, PETRI_PLACES=207, PETRI_TRANSITIONS=246} [2024-11-24 02:06:09,813 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 181 predicate places. [2024-11-24 02:06:09,813 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 246 transitions, 3445 flow [2024-11-24 02:06:09,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:09,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:09,813 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:09,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 02:06:09,814 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:09,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash 189153691, now seen corresponding path program 12 times [2024-11-24 02:06:09,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:09,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190336133] [2024-11-24 02:06:09,815 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:06:09,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:09,839 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 02:06:09,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:10,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:10,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190336133] [2024-11-24 02:06:10,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190336133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:10,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:10,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:10,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233454447] [2024-11-24 02:06:10,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:10,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:10,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:10,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:10,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:10,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:10,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 246 transitions, 3445 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:10,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:10,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:10,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:12,106 INFO L124 PetriNetUnfolderBase]: 1980/3599 cut-off events. [2024-11-24 02:06:12,106 INFO L125 PetriNetUnfolderBase]: For 22860/22860 co-relation queries the response was YES. [2024-11-24 02:06:12,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17000 conditions, 3599 events. 1980/3599 cut-off events. For 22860/22860 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 23537 event pairs, 336 based on Foata normal form. 5/3604 useless extension candidates. Maximal degree in co-relation 16883. Up to 1067 conditions per place. [2024-11-24 02:06:12,158 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 209 selfloop transitions, 153 changer transitions 9/372 dead transitions. [2024-11-24 02:06:12,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 372 transitions, 4946 flow [2024-11-24 02:06:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 02:06:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-24 02:06:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 269 transitions. [2024-11-24 02:06:12,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40029761904761907 [2024-11-24 02:06:12,160 INFO L175 Difference]: Start difference. First operand has 207 places, 246 transitions, 3445 flow. Second operand 24 states and 269 transitions. [2024-11-24 02:06:12,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 372 transitions, 4946 flow [2024-11-24 02:06:12,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 372 transitions, 4652 flow, removed 18 selfloop flow, removed 17 redundant places. [2024-11-24 02:06:12,290 INFO L231 Difference]: Finished difference. Result has 217 places, 261 transitions, 3821 flow [2024-11-24 02:06:12,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3821, PETRI_PLACES=217, PETRI_TRANSITIONS=261} [2024-11-24 02:06:12,290 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2024-11-24 02:06:12,290 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 261 transitions, 3821 flow [2024-11-24 02:06:12,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:12,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:12,291 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:12,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 02:06:12,291 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:12,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash 220842099, now seen corresponding path program 13 times [2024-11-24 02:06:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:12,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979074339] [2024-11-24 02:06:12,291 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:06:12,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:13,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:13,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979074339] [2024-11-24 02:06:13,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979074339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:13,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:13,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:13,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627973954] [2024-11-24 02:06:13,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:13,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:13,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:13,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:13,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:13,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:13,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 261 transitions, 3821 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:13,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:13,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:13,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:14,747 INFO L124 PetriNetUnfolderBase]: 2233/4064 cut-off events. [2024-11-24 02:06:14,747 INFO L125 PetriNetUnfolderBase]: For 26561/26561 co-relation queries the response was YES. [2024-11-24 02:06:14,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19573 conditions, 4064 events. 2233/4064 cut-off events. For 26561/26561 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27371 event pairs, 239 based on Foata normal form. 1/4065 useless extension candidates. Maximal degree in co-relation 19453. Up to 928 conditions per place. [2024-11-24 02:06:14,782 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 214 selfloop transitions, 207 changer transitions 8/430 dead transitions. [2024-11-24 02:06:14,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 430 transitions, 6021 flow [2024-11-24 02:06:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 02:06:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-24 02:06:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 261 transitions. [2024-11-24 02:06:14,785 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4052795031055901 [2024-11-24 02:06:14,785 INFO L175 Difference]: Start difference. First operand has 217 places, 261 transitions, 3821 flow. Second operand 23 states and 261 transitions. [2024-11-24 02:06:14,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 430 transitions, 6021 flow [2024-11-24 02:06:14,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 430 transitions, 5754 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-11-24 02:06:14,979 INFO L231 Difference]: Finished difference. Result has 235 places, 321 transitions, 5115 flow [2024-11-24 02:06:14,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3630, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5115, PETRI_PLACES=235, PETRI_TRANSITIONS=321} [2024-11-24 02:06:14,979 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 209 predicate places. [2024-11-24 02:06:14,980 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 321 transitions, 5115 flow [2024-11-24 02:06:14,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:14,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:14,980 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:14,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 02:06:14,980 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:14,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:14,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1691794049, now seen corresponding path program 14 times [2024-11-24 02:06:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:14,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502188242] [2024-11-24 02:06:14,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:06:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:15,007 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:06:15,007 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502188242] [2024-11-24 02:06:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502188242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:15,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034522647] [2024-11-24 02:06:15,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:15,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:15,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:15,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:15,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:15,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 321 transitions, 5115 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:15,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:15,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:15,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:17,248 INFO L124 PetriNetUnfolderBase]: 2228/4059 cut-off events. [2024-11-24 02:06:17,248 INFO L125 PetriNetUnfolderBase]: For 30865/30865 co-relation queries the response was YES. [2024-11-24 02:06:17,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20752 conditions, 4059 events. 2228/4059 cut-off events. For 30865/30865 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27285 event pairs, 162 based on Foata normal form. 1/4060 useless extension candidates. Maximal degree in co-relation 20621. Up to 713 conditions per place. [2024-11-24 02:06:17,281 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 164 selfloop transitions, 246 changer transitions 7/418 dead transitions. [2024-11-24 02:06:17,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 418 transitions, 6403 flow [2024-11-24 02:06:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 02:06:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-24 02:06:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 247 transitions. [2024-11-24 02:06:17,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38354037267080743 [2024-11-24 02:06:17,283 INFO L175 Difference]: Start difference. First operand has 235 places, 321 transitions, 5115 flow. Second operand 23 states and 247 transitions. [2024-11-24 02:06:17,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 418 transitions, 6403 flow [2024-11-24 02:06:17,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 418 transitions, 6235 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-11-24 02:06:17,456 INFO L231 Difference]: Finished difference. Result has 258 places, 329 transitions, 5628 flow [2024-11-24 02:06:17,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5628, PETRI_PLACES=258, PETRI_TRANSITIONS=329} [2024-11-24 02:06:17,457 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 232 predicate places. [2024-11-24 02:06:17,457 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 329 transitions, 5628 flow [2024-11-24 02:06:17,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:17,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:17,457 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:17,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 02:06:17,457 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:17,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:17,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1139543729, now seen corresponding path program 15 times [2024-11-24 02:06:17,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:17,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220908948] [2024-11-24 02:06:17,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:06:17,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:17,480 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 02:06:17,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220908948] [2024-11-24 02:06:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220908948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:17,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:17,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:17,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590610108] [2024-11-24 02:06:17,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:17,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:17,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:17,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:17,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:17,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:17,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 329 transitions, 5628 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:17,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:17,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:17,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:19,314 INFO L124 PetriNetUnfolderBase]: 2229/4065 cut-off events. [2024-11-24 02:06:19,315 INFO L125 PetriNetUnfolderBase]: For 35612/35612 co-relation queries the response was YES. [2024-11-24 02:06:19,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21943 conditions, 4065 events. 2229/4065 cut-off events. For 35612/35612 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27432 event pairs, 490 based on Foata normal form. 6/4071 useless extension candidates. Maximal degree in co-relation 21806. Up to 1217 conditions per place. [2024-11-24 02:06:19,341 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 214 selfloop transitions, 161 changer transitions 11/387 dead transitions. [2024-11-24 02:06:19,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 387 transitions, 6666 flow [2024-11-24 02:06:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 02:06:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-24 02:06:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 168 transitions. [2024-11-24 02:06:19,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-24 02:06:19,342 INFO L175 Difference]: Start difference. First operand has 258 places, 329 transitions, 5628 flow. Second operand 16 states and 168 transitions. [2024-11-24 02:06:19,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 387 transitions, 6666 flow [2024-11-24 02:06:19,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 387 transitions, 6400 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-11-24 02:06:19,519 INFO L231 Difference]: Finished difference. Result has 266 places, 329 transitions, 5721 flow [2024-11-24 02:06:19,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5380, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5721, PETRI_PLACES=266, PETRI_TRANSITIONS=329} [2024-11-24 02:06:19,520 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 240 predicate places. [2024-11-24 02:06:19,520 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 329 transitions, 5721 flow [2024-11-24 02:06:19,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:19,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:19,520 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:19,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 02:06:19,520 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:19,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:19,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1662923501, now seen corresponding path program 16 times [2024-11-24 02:06:19,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:19,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584154857] [2024-11-24 02:06:19,521 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:06:19,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:19,540 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:06:19,540 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:19,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:19,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584154857] [2024-11-24 02:06:19,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584154857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:19,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:19,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:06:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243927596] [2024-11-24 02:06:19,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:19,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:06:19,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:19,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:06:19,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:06:19,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:19,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 329 transitions, 5721 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:19,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:19,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:19,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:21,339 INFO L124 PetriNetUnfolderBase]: 2214/4032 cut-off events. [2024-11-24 02:06:21,339 INFO L125 PetriNetUnfolderBase]: For 38713/38713 co-relation queries the response was YES. [2024-11-24 02:06:21,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21942 conditions, 4032 events. 2214/4032 cut-off events. For 38713/38713 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 27080 event pairs, 146 based on Foata normal form. 1/4033 useless extension candidates. Maximal degree in co-relation 21804. Up to 692 conditions per place. [2024-11-24 02:06:21,380 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 178 selfloop transitions, 237 changer transitions 7/423 dead transitions. [2024-11-24 02:06:21,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 423 transitions, 6922 flow [2024-11-24 02:06:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 02:06:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-24 02:06:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 248 transitions. [2024-11-24 02:06:21,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-11-24 02:06:21,382 INFO L175 Difference]: Start difference. First operand has 266 places, 329 transitions, 5721 flow. Second operand 22 states and 248 transitions. [2024-11-24 02:06:21,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 423 transitions, 6922 flow [2024-11-24 02:06:21,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 423 transitions, 6686 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-11-24 02:06:21,618 INFO L231 Difference]: Finished difference. Result has 275 places, 328 transitions, 5967 flow [2024-11-24 02:06:21,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5497, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5967, PETRI_PLACES=275, PETRI_TRANSITIONS=328} [2024-11-24 02:06:21,619 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 249 predicate places. [2024-11-24 02:06:21,619 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 328 transitions, 5967 flow [2024-11-24 02:06:21,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:21,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:21,620 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:21,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 02:06:21,620 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:21,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:21,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1654731891, now seen corresponding path program 17 times [2024-11-24 02:06:21,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:21,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850425506] [2024-11-24 02:06:21,621 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:06:21,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:21,667 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-24 02:06:21,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:22,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:22,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850425506] [2024-11-24 02:06:22,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850425506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:22,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:22,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219525375] [2024-11-24 02:06:22,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:22,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:22,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:22,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:22,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:22,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 328 transitions, 5967 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:22,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:22,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:22,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:24,167 INFO L124 PetriNetUnfolderBase]: 2385/4329 cut-off events. [2024-11-24 02:06:24,167 INFO L125 PetriNetUnfolderBase]: For 41754/41754 co-relation queries the response was YES. [2024-11-24 02:06:24,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24186 conditions, 4329 events. 2385/4329 cut-off events. For 41754/41754 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 29455 event pairs, 342 based on Foata normal form. 5/4334 useless extension candidates. Maximal degree in co-relation 24049. Up to 983 conditions per place. [2024-11-24 02:06:24,206 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 239 selfloop transitions, 212 changer transitions 9/461 dead transitions. [2024-11-24 02:06:24,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 461 transitions, 7835 flow [2024-11-24 02:06:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 02:06:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-24 02:06:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 272 transitions. [2024-11-24 02:06:24,208 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-24 02:06:24,208 INFO L175 Difference]: Start difference. First operand has 275 places, 328 transitions, 5967 flow. Second operand 24 states and 272 transitions. [2024-11-24 02:06:24,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 461 transitions, 7835 flow [2024-11-24 02:06:24,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 461 transitions, 7480 flow, removed 20 selfloop flow, removed 14 redundant places. [2024-11-24 02:06:24,452 INFO L231 Difference]: Finished difference. Result has 290 places, 346 transitions, 6516 flow [2024-11-24 02:06:24,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6516, PETRI_PLACES=290, PETRI_TRANSITIONS=346} [2024-11-24 02:06:24,453 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 264 predicate places. [2024-11-24 02:06:24,453 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 346 transitions, 6516 flow [2024-11-24 02:06:24,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:24,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:24,454 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:24,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 02:06:24,454 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:24,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash 994858065, now seen corresponding path program 18 times [2024-11-24 02:06:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:24,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332602676] [2024-11-24 02:06:24,455 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:06:24,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:24,480 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 02:06:24,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:25,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332602676] [2024-11-24 02:06:25,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332602676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:25,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:25,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:25,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803600971] [2024-11-24 02:06:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:25,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:25,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:25,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:25,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:25,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:25,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 346 transitions, 6516 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:25,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:25,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:25,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:27,042 INFO L124 PetriNetUnfolderBase]: 2563/4651 cut-off events. [2024-11-24 02:06:27,043 INFO L125 PetriNetUnfolderBase]: For 50110/50110 co-relation queries the response was YES. [2024-11-24 02:06:27,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26350 conditions, 4651 events. 2563/4651 cut-off events. For 50110/50110 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 32097 event pairs, 189 based on Foata normal form. 1/4652 useless extension candidates. Maximal degree in co-relation 26206. Up to 863 conditions per place. [2024-11-24 02:06:27,087 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 200 selfloop transitions, 263 changer transitions 8/472 dead transitions. [2024-11-24 02:06:27,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 472 transitions, 8268 flow [2024-11-24 02:06:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 02:06:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-24 02:06:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 282 transitions. [2024-11-24 02:06:27,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3873626373626374 [2024-11-24 02:06:27,088 INFO L175 Difference]: Start difference. First operand has 290 places, 346 transitions, 6516 flow. Second operand 26 states and 282 transitions. [2024-11-24 02:06:27,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 472 transitions, 8268 flow [2024-11-24 02:06:27,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 472 transitions, 7945 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-11-24 02:06:27,350 INFO L231 Difference]: Finished difference. Result has 310 places, 365 transitions, 7239 flow [2024-11-24 02:06:27,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6219, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7239, PETRI_PLACES=310, PETRI_TRANSITIONS=365} [2024-11-24 02:06:27,351 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 284 predicate places. [2024-11-24 02:06:27,351 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 365 transitions, 7239 flow [2024-11-24 02:06:27,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:27,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:27,351 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:27,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 02:06:27,351 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:27,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash 129751265, now seen corresponding path program 19 times [2024-11-24 02:06:27,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:27,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527527987] [2024-11-24 02:06:27,352 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:06:27,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527527987] [2024-11-24 02:06:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527527987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:28,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:28,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:28,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038947069] [2024-11-24 02:06:28,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:28,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:28,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:28,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:28,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:28,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 365 transitions, 7239 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:28,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:28,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:28,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:30,036 INFO L124 PetriNetUnfolderBase]: 2678/4876 cut-off events. [2024-11-24 02:06:30,036 INFO L125 PetriNetUnfolderBase]: For 54897/54897 co-relation queries the response was YES. [2024-11-24 02:06:30,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28448 conditions, 4876 events. 2678/4876 cut-off events. For 54897/54897 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 34057 event pairs, 282 based on Foata normal form. 4/4880 useless extension candidates. Maximal degree in co-relation 28299. Up to 1128 conditions per place. [2024-11-24 02:06:30,080 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 254 selfloop transitions, 238 changer transitions 11/504 dead transitions. [2024-11-24 02:06:30,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 504 transitions, 9262 flow [2024-11-24 02:06:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 02:06:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-24 02:06:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 278 transitions. [2024-11-24 02:06:30,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38186813186813184 [2024-11-24 02:06:30,082 INFO L175 Difference]: Start difference. First operand has 310 places, 365 transitions, 7239 flow. Second operand 26 states and 278 transitions. [2024-11-24 02:06:30,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 504 transitions, 9262 flow [2024-11-24 02:06:30,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 504 transitions, 8963 flow, removed 17 selfloop flow, removed 17 redundant places. [2024-11-24 02:06:30,384 INFO L231 Difference]: Finished difference. Result has 326 places, 382 transitions, 8016 flow [2024-11-24 02:06:30,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6980, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8016, PETRI_PLACES=326, PETRI_TRANSITIONS=382} [2024-11-24 02:06:30,385 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 300 predicate places. [2024-11-24 02:06:30,385 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 382 transitions, 8016 flow [2024-11-24 02:06:30,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:30,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:30,386 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:30,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 02:06:30,386 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:30,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1076257121, now seen corresponding path program 20 times [2024-11-24 02:06:30,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:30,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123130437] [2024-11-24 02:06:30,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:06:30,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:30,406 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:06:30,406 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:30,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123130437] [2024-11-24 02:06:30,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123130437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:30,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:30,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:30,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274690370] [2024-11-24 02:06:30,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:30,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:30,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:30,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:30,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:30,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 382 transitions, 8016 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:30,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:30,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:30,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:33,706 INFO L124 PetriNetUnfolderBase]: 3132/5675 cut-off events. [2024-11-24 02:06:33,707 INFO L125 PetriNetUnfolderBase]: For 66820/66820 co-relation queries the response was YES. [2024-11-24 02:06:33,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34191 conditions, 5675 events. 3132/5675 cut-off events. For 66820/66820 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 40511 event pairs, 271 based on Foata normal form. 1/5676 useless extension candidates. Maximal degree in co-relation 34035. Up to 1052 conditions per place. [2024-11-24 02:06:33,750 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 206 selfloop transitions, 329 changer transitions 10/546 dead transitions. [2024-11-24 02:06:33,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 546 transitions, 10466 flow [2024-11-24 02:06:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 02:06:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-24 02:06:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 309 transitions. [2024-11-24 02:06:33,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3678571428571429 [2024-11-24 02:06:33,752 INFO L175 Difference]: Start difference. First operand has 326 places, 382 transitions, 8016 flow. Second operand 30 states and 309 transitions. [2024-11-24 02:06:33,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 546 transitions, 10466 flow [2024-11-24 02:06:34,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 546 transitions, 9857 flow, removed 90 selfloop flow, removed 21 redundant places. [2024-11-24 02:06:34,106 INFO L231 Difference]: Finished difference. Result has 341 places, 427 transitions, 9166 flow [2024-11-24 02:06:34,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7529, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9166, PETRI_PLACES=341, PETRI_TRANSITIONS=427} [2024-11-24 02:06:34,106 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 315 predicate places. [2024-11-24 02:06:34,106 INFO L471 AbstractCegarLoop]: Abstraction has has 341 places, 427 transitions, 9166 flow [2024-11-24 02:06:34,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:34,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:34,107 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:34,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 02:06:34,107 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:34,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1736130947, now seen corresponding path program 21 times [2024-11-24 02:06:34,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:34,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005219045] [2024-11-24 02:06:34,108 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:06:34,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:34,126 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 02:06:34,126 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:34,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005219045] [2024-11-24 02:06:34,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005219045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:34,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:34,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:06:34,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829246954] [2024-11-24 02:06:34,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:34,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:34,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:34,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:34,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:34,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:34,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 427 transitions, 9166 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:34,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:34,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:34,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:36,636 INFO L124 PetriNetUnfolderBase]: 3140/5691 cut-off events. [2024-11-24 02:06:36,636 INFO L125 PetriNetUnfolderBase]: For 67485/67485 co-relation queries the response was YES. [2024-11-24 02:06:36,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34799 conditions, 5691 events. 3140/5691 cut-off events. For 67485/67485 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 40396 event pairs, 169 based on Foata normal form. 1/5692 useless extension candidates. Maximal degree in co-relation 34646. Up to 1119 conditions per place. [2024-11-24 02:06:36,698 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 161 selfloop transitions, 347 changer transitions 7/516 dead transitions. [2024-11-24 02:06:36,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 516 transitions, 10573 flow [2024-11-24 02:06:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 02:06:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-24 02:06:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 243 transitions. [2024-11-24 02:06:36,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-11-24 02:06:36,700 INFO L175 Difference]: Start difference. First operand has 341 places, 427 transitions, 9166 flow. Second operand 24 states and 243 transitions. [2024-11-24 02:06:36,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 516 transitions, 10573 flow [2024-11-24 02:06:37,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 516 transitions, 10042 flow, removed 26 selfloop flow, removed 20 redundant places. [2024-11-24 02:06:37,025 INFO L231 Difference]: Finished difference. Result has 346 places, 429 transitions, 9395 flow [2024-11-24 02:06:37,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8649, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9395, PETRI_PLACES=346, PETRI_TRANSITIONS=429} [2024-11-24 02:06:37,025 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 320 predicate places. [2024-11-24 02:06:37,025 INFO L471 AbstractCegarLoop]: Abstraction has has 346 places, 429 transitions, 9395 flow [2024-11-24 02:06:37,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:37,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:37,026 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:37,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 02:06:37,026 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:37,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1221940767, now seen corresponding path program 22 times [2024-11-24 02:06:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:37,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021102376] [2024-11-24 02:06:37,027 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:06:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:37,042 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:06:37,043 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021102376] [2024-11-24 02:06:37,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021102376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:37,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:37,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:06:37,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777775836] [2024-11-24 02:06:37,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:37,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:06:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:37,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:06:37,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:06:37,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:37,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 429 transitions, 9395 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:37,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:37,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:37,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:39,399 INFO L124 PetriNetUnfolderBase]: 3131/5669 cut-off events. [2024-11-24 02:06:39,399 INFO L125 PetriNetUnfolderBase]: For 68721/68721 co-relation queries the response was YES. [2024-11-24 02:06:39,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35085 conditions, 5669 events. 3131/5669 cut-off events. For 68721/68721 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 40167 event pairs, 139 based on Foata normal form. 1/5670 useless extension candidates. Maximal degree in co-relation 34935. Up to 1119 conditions per place. [2024-11-24 02:06:39,465 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 149 selfloop transitions, 344 changer transitions 7/501 dead transitions. [2024-11-24 02:06:39,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 501 transitions, 10653 flow [2024-11-24 02:06:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 02:06:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-24 02:06:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 199 transitions. [2024-11-24 02:06:39,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37406015037593987 [2024-11-24 02:06:39,467 INFO L175 Difference]: Start difference. First operand has 346 places, 429 transitions, 9395 flow. Second operand 19 states and 199 transitions. [2024-11-24 02:06:39,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 501 transitions, 10653 flow [2024-11-24 02:06:39,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 501 transitions, 9894 flow, removed 5 selfloop flow, removed 21 redundant places. [2024-11-24 02:06:39,805 INFO L231 Difference]: Finished difference. Result has 344 places, 429 transitions, 9355 flow [2024-11-24 02:06:39,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8644, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9355, PETRI_PLACES=344, PETRI_TRANSITIONS=429} [2024-11-24 02:06:39,806 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 318 predicate places. [2024-11-24 02:06:39,806 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 429 transitions, 9355 flow [2024-11-24 02:06:39,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:39,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:39,807 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:39,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-24 02:06:39,807 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:39,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash -821489315, now seen corresponding path program 1 times [2024-11-24 02:06:39,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:39,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397762749] [2024-11-24 02:06:39,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:39,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:39,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:39,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397762749] [2024-11-24 02:06:39,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397762749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:39,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509696201] [2024-11-24 02:06:39,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:39,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:39,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:39,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:39,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 02:06:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:40,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 02:06:40,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:40,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509696201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:40,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:40,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-24 02:06:40,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980696253] [2024-11-24 02:06:40,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:40,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 02:06:40,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:40,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 02:06:40,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-24 02:06:40,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:40,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 429 transitions, 9355 flow. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:40,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:40,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:40,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:41,620 INFO L124 PetriNetUnfolderBase]: 3816/6827 cut-off events. [2024-11-24 02:06:41,620 INFO L125 PetriNetUnfolderBase]: For 75698/75698 co-relation queries the response was YES. [2024-11-24 02:06:41,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45195 conditions, 6827 events. 3816/6827 cut-off events. For 75698/75698 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 47002 event pairs, 815 based on Foata normal form. 558/7385 useless extension candidates. Maximal degree in co-relation 45045. Up to 1841 conditions per place. [2024-11-24 02:06:41,773 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 600 selfloop transitions, 115 changer transitions 0/716 dead transitions. [2024-11-24 02:06:41,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 716 transitions, 16064 flow [2024-11-24 02:06:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:06:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-24 02:06:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-11-24 02:06:41,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-11-24 02:06:41,774 INFO L175 Difference]: Start difference. First operand has 344 places, 429 transitions, 9355 flow. Second operand 8 states and 113 transitions. [2024-11-24 02:06:41,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 716 transitions, 16064 flow [2024-11-24 02:06:42,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 716 transitions, 15000 flow, removed 21 selfloop flow, removed 20 redundant places. [2024-11-24 02:06:42,385 INFO L231 Difference]: Finished difference. Result has 334 places, 477 transitions, 10058 flow [2024-11-24 02:06:42,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10058, PETRI_PLACES=334, PETRI_TRANSITIONS=477} [2024-11-24 02:06:42,386 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 308 predicate places. [2024-11-24 02:06:42,386 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 477 transitions, 10058 flow [2024-11-24 02:06:42,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:42,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:42,386 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:42,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 02:06:42,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:42,587 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:42,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash 185928938, now seen corresponding path program 1 times [2024-11-24 02:06:42,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:42,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474934929] [2024-11-24 02:06:42,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:42,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474934929] [2024-11-24 02:06:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474934929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876214391] [2024-11-24 02:06:42,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:42,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:42,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:42,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 02:06:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:42,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 02:06:42,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:42,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:42,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876214391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:42,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:42,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-24 02:06:42,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71658937] [2024-11-24 02:06:42,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:42,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:06:42,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:42,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:06:42,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:06:42,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:42,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 477 transitions, 10058 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:42,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:42,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:42,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:44,938 INFO L124 PetriNetUnfolderBase]: 4618/8112 cut-off events. [2024-11-24 02:06:44,939 INFO L125 PetriNetUnfolderBase]: For 88374/88374 co-relation queries the response was YES. [2024-11-24 02:06:45,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56948 conditions, 8112 events. 4618/8112 cut-off events. For 88374/88374 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 54703 event pairs, 1136 based on Foata normal form. 656/8768 useless extension candidates. Maximal degree in co-relation 56800. Up to 1824 conditions per place. [2024-11-24 02:06:45,052 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 713 selfloop transitions, 125 changer transitions 0/839 dead transitions. [2024-11-24 02:06:45,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 839 transitions, 18921 flow [2024-11-24 02:06:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 02:06:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 02:06:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-11-24 02:06:45,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-11-24 02:06:45,053 INFO L175 Difference]: Start difference. First operand has 334 places, 477 transitions, 10058 flow. Second operand 7 states and 120 transitions. [2024-11-24 02:06:45,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 839 transitions, 18921 flow [2024-11-24 02:06:45,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 839 transitions, 18581 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-11-24 02:06:45,808 INFO L231 Difference]: Finished difference. Result has 337 places, 525 transitions, 11206 flow [2024-11-24 02:06:45,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9851, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11206, PETRI_PLACES=337, PETRI_TRANSITIONS=525} [2024-11-24 02:06:45,809 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 311 predicate places. [2024-11-24 02:06:45,809 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 525 transitions, 11206 flow [2024-11-24 02:06:45,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:45,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:45,810 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:45,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 02:06:46,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:46,010 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:46,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1620712864, now seen corresponding path program 1 times [2024-11-24 02:06:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:46,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570511894] [2024-11-24 02:06:46,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:46,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:46,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570511894] [2024-11-24 02:06:46,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570511894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:46,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870131018] [2024-11-24 02:06:46,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:46,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:46,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:46,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:46,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 02:06:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:46,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 02:06:46,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:46,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:06:46,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-24 02:06:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:46,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:47,101 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-24 02:06:47,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 87 [2024-11-24 02:06:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870131018] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:47,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:06:47,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-11-24 02:06:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426621715] [2024-11-24 02:06:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:47,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:06:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:47,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:06:47,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-24 02:06:47,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:47,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 525 transitions, 11206 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:47,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:47,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:47,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:49,423 INFO L124 PetriNetUnfolderBase]: 5095/9111 cut-off events. [2024-11-24 02:06:49,423 INFO L125 PetriNetUnfolderBase]: For 100759/100759 co-relation queries the response was YES. [2024-11-24 02:06:49,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63622 conditions, 9111 events. 5095/9111 cut-off events. For 100759/100759 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 64352 event pairs, 1036 based on Foata normal form. 30/9141 useless extension candidates. Maximal degree in co-relation 63475. Up to 3198 conditions per place. [2024-11-24 02:06:49,531 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 358 selfloop transitions, 248 changer transitions 0/607 dead transitions. [2024-11-24 02:06:49,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 607 transitions, 13236 flow [2024-11-24 02:06:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:06:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 02:06:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-24 02:06:49,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-11-24 02:06:49,532 INFO L175 Difference]: Start difference. First operand has 337 places, 525 transitions, 11206 flow. Second operand 11 states and 141 transitions. [2024-11-24 02:06:49,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 607 transitions, 13236 flow [2024-11-24 02:06:50,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 607 transitions, 13109 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 02:06:50,322 INFO L231 Difference]: Finished difference. Result has 347 places, 540 transitions, 12015 flow [2024-11-24 02:06:50,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=11089, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12015, PETRI_PLACES=347, PETRI_TRANSITIONS=540} [2024-11-24 02:06:50,323 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 321 predicate places. [2024-11-24 02:06:50,323 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 540 transitions, 12015 flow [2024-11-24 02:06:50,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:50,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:50,323 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:50,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 02:06:50,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:50,524 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:50,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1031678210, now seen corresponding path program 2 times [2024-11-24 02:06:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290283953] [2024-11-24 02:06:50,524 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:06:50,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:50,583 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:06:50,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:51,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:51,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290283953] [2024-11-24 02:06:51,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290283953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:51,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:51,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 02:06:51,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560132335] [2024-11-24 02:06:51,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:51,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:06:51,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:51,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:06:51,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:06:51,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:51,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 540 transitions, 12015 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:51,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:51,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:51,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:53,571 INFO L124 PetriNetUnfolderBase]: 5090/9106 cut-off events. [2024-11-24 02:06:53,571 INFO L125 PetriNetUnfolderBase]: For 108288/108288 co-relation queries the response was YES. [2024-11-24 02:06:53,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65488 conditions, 9106 events. 5090/9106 cut-off events. For 108288/108288 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 64436 event pairs, 1380 based on Foata normal form. 5/9111 useless extension candidates. Maximal degree in co-relation 65338. Up to 3443 conditions per place. [2024-11-24 02:06:54,029 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 317 selfloop transitions, 244 changer transitions 10/572 dead transitions. [2024-11-24 02:06:54,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 572 transitions, 13259 flow [2024-11-24 02:06:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 02:06:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 02:06:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-11-24 02:06:54,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-11-24 02:06:54,030 INFO L175 Difference]: Start difference. First operand has 347 places, 540 transitions, 12015 flow. Second operand 10 states and 109 transitions. [2024-11-24 02:06:54,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 572 transitions, 13259 flow [2024-11-24 02:06:55,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 572 transitions, 13037 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-24 02:06:55,105 INFO L231 Difference]: Finished difference. Result has 353 places, 537 transitions, 12207 flow [2024-11-24 02:06:55,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=11760, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12207, PETRI_PLACES=353, PETRI_TRANSITIONS=537} [2024-11-24 02:06:55,107 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 327 predicate places. [2024-11-24 02:06:55,107 INFO L471 AbstractCegarLoop]: Abstraction has has 353 places, 537 transitions, 12207 flow [2024-11-24 02:06:55,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:55,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:06:55,107 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:55,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-24 02:06:55,107 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:06:55,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash -133650177, now seen corresponding path program 1 times [2024-11-24 02:06:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486198800] [2024-11-24 02:06:55,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:55,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:55,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486198800] [2024-11-24 02:06:55,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486198800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:55,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286835744] [2024-11-24 02:06:55,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:55,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:55,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:55,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:55,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 02:06:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:55,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 02:06:55,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:56,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:56,249 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-24 02:06:56,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-24 02:06:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:06:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286835744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:56,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-24 02:06:56,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147123631] [2024-11-24 02:06:56,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:56,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 02:06:56,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:56,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 02:06:56,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:06:56,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:06:56,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 537 transitions, 12207 flow. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:56,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:06:56,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:06:56,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:06:59,295 INFO L124 PetriNetUnfolderBase]: 5150/9202 cut-off events. [2024-11-24 02:06:59,295 INFO L125 PetriNetUnfolderBase]: For 112518/112518 co-relation queries the response was YES. [2024-11-24 02:06:59,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67601 conditions, 9202 events. 5150/9202 cut-off events. For 112518/112518 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 65165 event pairs, 548 based on Foata normal form. 56/9258 useless extension candidates. Maximal degree in co-relation 67449. Up to 2259 conditions per place. [2024-11-24 02:06:59,402 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 203 selfloop transitions, 420 changer transitions 1/625 dead transitions. [2024-11-24 02:06:59,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 625 transitions, 14339 flow [2024-11-24 02:06:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 02:06:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-24 02:06:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 186 transitions. [2024-11-24 02:06:59,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-24 02:06:59,404 INFO L175 Difference]: Start difference. First operand has 353 places, 537 transitions, 12207 flow. Second operand 18 states and 186 transitions. [2024-11-24 02:06:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 625 transitions, 14339 flow [2024-11-24 02:07:00,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 625 transitions, 13829 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-24 02:07:00,417 INFO L231 Difference]: Finished difference. Result has 361 places, 558 transitions, 13150 flow [2024-11-24 02:07:00,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=11620, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13150, PETRI_PLACES=361, PETRI_TRANSITIONS=558} [2024-11-24 02:07:00,418 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 335 predicate places. [2024-11-24 02:07:00,418 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 558 transitions, 13150 flow [2024-11-24 02:07:00,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:00,419 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:00,419 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:00,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 02:07:00,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:00,619 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:00,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:00,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1603851868, now seen corresponding path program 3 times [2024-11-24 02:07:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:00,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604981075] [2024-11-24 02:07:00,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:07:00,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:00,645 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 02:07:00,645 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:01,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604981075] [2024-11-24 02:07:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604981075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 02:07:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970264723] [2024-11-24 02:07:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:01,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:07:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:01,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:07:01,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:07:01,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:01,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 558 transitions, 13150 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:01,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:01,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:01,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:03,796 INFO L124 PetriNetUnfolderBase]: 5140/9187 cut-off events. [2024-11-24 02:07:03,796 INFO L125 PetriNetUnfolderBase]: For 118978/118978 co-relation queries the response was YES. [2024-11-24 02:07:03,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69259 conditions, 9187 events. 5140/9187 cut-off events. For 118978/118978 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 65082 event pairs, 1425 based on Foata normal form. 5/9192 useless extension candidates. Maximal degree in co-relation 69103. Up to 3535 conditions per place. [2024-11-24 02:07:03,919 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 346 selfloop transitions, 239 changer transitions 5/591 dead transitions. [2024-11-24 02:07:03,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 591 transitions, 14404 flow [2024-11-24 02:07:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:07:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 02:07:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-11-24 02:07:03,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-11-24 02:07:03,921 INFO L175 Difference]: Start difference. First operand has 361 places, 558 transitions, 13150 flow. Second operand 11 states and 120 transitions. [2024-11-24 02:07:03,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 591 transitions, 14404 flow [2024-11-24 02:07:05,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 591 transitions, 14106 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-24 02:07:05,080 INFO L231 Difference]: Finished difference. Result has 363 places, 554 transitions, 13233 flow [2024-11-24 02:07:05,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=12791, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13233, PETRI_PLACES=363, PETRI_TRANSITIONS=554} [2024-11-24 02:07:05,081 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 337 predicate places. [2024-11-24 02:07:05,082 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 554 transitions, 13233 flow [2024-11-24 02:07:05,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:05,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:05,082 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:05,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-24 02:07:05,082 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:05,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1313868604, now seen corresponding path program 4 times [2024-11-24 02:07:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122088810] [2024-11-24 02:07:05,084 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:07:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:05,107 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:07:05,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:05,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122088810] [2024-11-24 02:07:05,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122088810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:05,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:05,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:07:05,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551342078] [2024-11-24 02:07:05,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:05,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:07:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:05,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:07:05,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:07:05,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:05,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 554 transitions, 13233 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:05,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:05,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:05,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:08,086 INFO L124 PetriNetUnfolderBase]: 5053/9003 cut-off events. [2024-11-24 02:07:08,086 INFO L125 PetriNetUnfolderBase]: For 125446/125446 co-relation queries the response was YES. [2024-11-24 02:07:08,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69228 conditions, 9003 events. 5053/9003 cut-off events. For 125446/125446 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 63370 event pairs, 881 based on Foata normal form. 5/9008 useless extension candidates. Maximal degree in co-relation 69129. Up to 2069 conditions per place. [2024-11-24 02:07:08,197 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 331 selfloop transitions, 283 changer transitions 4/619 dead transitions. [2024-11-24 02:07:08,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 619 transitions, 14839 flow [2024-11-24 02:07:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 02:07:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 02:07:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-11-24 02:07:08,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-24 02:07:08,198 INFO L175 Difference]: Start difference. First operand has 363 places, 554 transitions, 13233 flow. Second operand 14 states and 160 transitions. [2024-11-24 02:07:08,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 619 transitions, 14839 flow [2024-11-24 02:07:09,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 619 transitions, 14332 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-24 02:07:09,236 INFO L231 Difference]: Finished difference. Result has 361 places, 554 transitions, 13288 flow [2024-11-24 02:07:09,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=12684, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13288, PETRI_PLACES=361, PETRI_TRANSITIONS=554} [2024-11-24 02:07:09,237 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 335 predicate places. [2024-11-24 02:07:09,238 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 554 transitions, 13288 flow [2024-11-24 02:07:09,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:09,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:09,238 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:09,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-24 02:07:09,238 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:09,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash -586336099, now seen corresponding path program 2 times [2024-11-24 02:07:09,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:09,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378859356] [2024-11-24 02:07:09,239 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:07:09,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:09,280 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:07:09,280 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:09,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:09,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378859356] [2024-11-24 02:07:09,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378859356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:09,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156994141] [2024-11-24 02:07:09,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:07:09,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:09,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:09,867 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:09,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 02:07:10,071 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:07:10,071 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:10,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 02:07:10,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:10,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:07:10,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 70 [2024-11-24 02:07:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:10,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:10,652 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-24 02:07:10,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-24 02:07:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:10,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156994141] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:10,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:07:10,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 9] total 18 [2024-11-24 02:07:10,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11307539] [2024-11-24 02:07:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:10,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:07:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:10,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:07:10,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-24 02:07:10,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:10,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 554 transitions, 13288 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:10,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:10,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:10,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:14,015 INFO L124 PetriNetUnfolderBase]: 5456/9835 cut-off events. [2024-11-24 02:07:14,016 INFO L125 PetriNetUnfolderBase]: For 131107/131107 co-relation queries the response was YES. [2024-11-24 02:07:14,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73917 conditions, 9835 events. 5456/9835 cut-off events. For 131107/131107 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 71294 event pairs, 1144 based on Foata normal form. 34/9869 useless extension candidates. Maximal degree in co-relation 73819. Up to 3001 conditions per place. [2024-11-24 02:07:14,130 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 288 selfloop transitions, 365 changer transitions 2/656 dead transitions. [2024-11-24 02:07:14,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 656 transitions, 15495 flow [2024-11-24 02:07:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 02:07:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-24 02:07:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 196 transitions. [2024-11-24 02:07:14,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-24 02:07:14,131 INFO L175 Difference]: Start difference. First operand has 361 places, 554 transitions, 13288 flow. Second operand 15 states and 196 transitions. [2024-11-24 02:07:14,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 656 transitions, 15495 flow [2024-11-24 02:07:15,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 656 transitions, 15277 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-24 02:07:15,339 INFO L231 Difference]: Finished difference. Result has 372 places, 566 transitions, 14376 flow [2024-11-24 02:07:15,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13023, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14376, PETRI_PLACES=372, PETRI_TRANSITIONS=566} [2024-11-24 02:07:15,341 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2024-11-24 02:07:15,341 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 566 transitions, 14376 flow [2024-11-24 02:07:15,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:15,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:15,341 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:15,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 02:07:15,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:15,542 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:15,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:15,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2057018093, now seen corresponding path program 3 times [2024-11-24 02:07:15,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:15,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706719384] [2024-11-24 02:07:15,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:07:15,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:15,564 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 02:07:15,564 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:16,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706719384] [2024-11-24 02:07:16,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706719384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76196559] [2024-11-24 02:07:16,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:07:16,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:16,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:16,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:16,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 02:07:16,192 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 02:07:16,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:16,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 02:07:16,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:16,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:16,564 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-24 02:07:16,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-24 02:07:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76196559] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:16,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:07:16,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 16 [2024-11-24 02:07:16,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316130136] [2024-11-24 02:07:16,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:16,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:07:16,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:16,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:07:16,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:07:16,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:16,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 566 transitions, 14376 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:16,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:16,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:16,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:19,810 INFO L124 PetriNetUnfolderBase]: 5339/9640 cut-off events. [2024-11-24 02:07:19,810 INFO L125 PetriNetUnfolderBase]: For 150856/150856 co-relation queries the response was YES. [2024-11-24 02:07:19,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75929 conditions, 9640 events. 5339/9640 cut-off events. For 150856/150856 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 69915 event pairs, 1032 based on Foata normal form. 45/9685 useless extension candidates. Maximal degree in co-relation 75826. Up to 2699 conditions per place. [2024-11-24 02:07:19,949 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 313 selfloop transitions, 368 changer transitions 2/684 dead transitions. [2024-11-24 02:07:19,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 684 transitions, 16819 flow [2024-11-24 02:07:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 02:07:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-24 02:07:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 223 transitions. [2024-11-24 02:07:19,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4684873949579832 [2024-11-24 02:07:19,951 INFO L175 Difference]: Start difference. First operand has 372 places, 566 transitions, 14376 flow. Second operand 17 states and 223 transitions. [2024-11-24 02:07:19,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 684 transitions, 16819 flow [2024-11-24 02:07:21,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 684 transitions, 16372 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-11-24 02:07:21,252 INFO L231 Difference]: Finished difference. Result has 381 places, 568 transitions, 14757 flow [2024-11-24 02:07:21,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13883, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=14757, PETRI_PLACES=381, PETRI_TRANSITIONS=568} [2024-11-24 02:07:21,253 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2024-11-24 02:07:21,253 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 568 transitions, 14757 flow [2024-11-24 02:07:21,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:21,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:21,254 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:21,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 02:07:21,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 02:07:21,454 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:21,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash -282503169, now seen corresponding path program 4 times [2024-11-24 02:07:21,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:21,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718419641] [2024-11-24 02:07:21,455 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:07:21,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:21,479 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:07:21,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:21,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718419641] [2024-11-24 02:07:21,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718419641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:21,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:21,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:07:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815810895] [2024-11-24 02:07:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:21,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:07:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:21,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:07:21,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:07:21,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:21,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 568 transitions, 14757 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:21,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:21,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:21,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:24,654 INFO L124 PetriNetUnfolderBase]: 5274/9497 cut-off events. [2024-11-24 02:07:24,654 INFO L125 PetriNetUnfolderBase]: For 158103/158103 co-relation queries the response was YES. [2024-11-24 02:07:24,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76610 conditions, 9497 events. 5274/9497 cut-off events. For 158103/158103 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 68189 event pairs, 1517 based on Foata normal form. 4/9501 useless extension candidates. Maximal degree in co-relation 76507. Up to 3775 conditions per place. [2024-11-24 02:07:24,782 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 358 selfloop transitions, 246 changer transitions 5/610 dead transitions. [2024-11-24 02:07:24,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 610 transitions, 16144 flow [2024-11-24 02:07:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 02:07:24,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 02:07:24,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-11-24 02:07:24,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-11-24 02:07:24,784 INFO L175 Difference]: Start difference. First operand has 381 places, 568 transitions, 14757 flow. Second operand 12 states and 139 transitions. [2024-11-24 02:07:24,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 610 transitions, 16144 flow [2024-11-24 02:07:26,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 610 transitions, 15560 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-24 02:07:26,016 INFO L231 Difference]: Finished difference. Result has 381 places, 566 transitions, 14734 flow [2024-11-24 02:07:26,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=14097, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14734, PETRI_PLACES=381, PETRI_TRANSITIONS=566} [2024-11-24 02:07:26,016 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2024-11-24 02:07:26,017 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 566 transitions, 14734 flow [2024-11-24 02:07:26,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:26,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:26,017 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:26,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-24 02:07:26,017 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:26,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 561825802, now seen corresponding path program 5 times [2024-11-24 02:07:26,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:26,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267291335] [2024-11-24 02:07:26,018 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:07:26,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:26,050 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-24 02:07:26,051 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 02:07:27,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:27,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267291335] [2024-11-24 02:07:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267291335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359492489] [2024-11-24 02:07:27,770 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:07:27,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:27,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:27,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:27,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 02:07:28,094 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-24 02:07:28,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:28,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 02:07:28,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:28,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:07:28,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-24 02:07:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:28,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:28,495 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-24 02:07:28,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 95 [2024-11-24 02:07:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:28,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359492489] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:28,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:07:28,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 8] total 21 [2024-11-24 02:07:28,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274879357] [2024-11-24 02:07:28,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:28,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:07:28,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:28,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:07:28,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-24 02:07:28,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:28,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 566 transitions, 14734 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:28,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:28,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:28,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:31,528 INFO L124 PetriNetUnfolderBase]: 5392/9728 cut-off events. [2024-11-24 02:07:31,529 INFO L125 PetriNetUnfolderBase]: For 164791/164791 co-relation queries the response was YES. [2024-11-24 02:07:31,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78348 conditions, 9728 events. 5392/9728 cut-off events. For 164791/164791 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 70569 event pairs, 1159 based on Foata normal form. 30/9758 useless extension candidates. Maximal degree in co-relation 78245. Up to 3147 conditions per place. [2024-11-24 02:07:31,695 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 389 selfloop transitions, 246 changer transitions 0/636 dead transitions. [2024-11-24 02:07:31,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 636 transitions, 16684 flow [2024-11-24 02:07:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:07:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 02:07:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-11-24 02:07:31,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-11-24 02:07:31,696 INFO L175 Difference]: Start difference. First operand has 381 places, 566 transitions, 14734 flow. Second operand 11 states and 142 transitions. [2024-11-24 02:07:31,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 636 transitions, 16684 flow [2024-11-24 02:07:32,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 636 transitions, 16324 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-24 02:07:32,936 INFO L231 Difference]: Finished difference. Result has 384 places, 572 transitions, 15139 flow [2024-11-24 02:07:32,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=14397, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15139, PETRI_PLACES=384, PETRI_TRANSITIONS=572} [2024-11-24 02:07:32,937 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 358 predicate places. [2024-11-24 02:07:32,937 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 572 transitions, 15139 flow [2024-11-24 02:07:32,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:32,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:32,938 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:32,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 02:07:33,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 02:07:33,138 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:33,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1960314192, now seen corresponding path program 6 times [2024-11-24 02:07:33,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:33,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512705749] [2024-11-24 02:07:33,139 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:07:33,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:33,173 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-24 02:07:33,174 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:33,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512705749] [2024-11-24 02:07:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512705749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825265603] [2024-11-24 02:07:33,719 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:07:33,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:33,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:33,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 02:07:33,920 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-24 02:07:33,920 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:33,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 02:07:33,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:34,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:34,258 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-24 02:07:34,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-24 02:07:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:34,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825265603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:07:34,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:07:34,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 16 [2024-11-24 02:07:34,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476884571] [2024-11-24 02:07:34,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:07:34,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 02:07:34,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:34,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 02:07:34,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:07:34,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:34,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 572 transitions, 15139 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:34,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:34,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:34,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:38,078 INFO L124 PetriNetUnfolderBase]: 5631/10245 cut-off events. [2024-11-24 02:07:38,078 INFO L125 PetriNetUnfolderBase]: For 177451/177451 co-relation queries the response was YES. [2024-11-24 02:07:38,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82917 conditions, 10245 events. 5631/10245 cut-off events. For 177451/177451 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 76117 event pairs, 1081 based on Foata normal form. 52/10297 useless extension candidates. Maximal degree in co-relation 82812. Up to 2876 conditions per place. [2024-11-24 02:07:38,211 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 374 selfloop transitions, 306 changer transitions 0/681 dead transitions. [2024-11-24 02:07:38,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 681 transitions, 17815 flow [2024-11-24 02:07:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 02:07:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-24 02:07:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 178 transitions. [2024-11-24 02:07:38,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-11-24 02:07:38,212 INFO L175 Difference]: Start difference. First operand has 384 places, 572 transitions, 15139 flow. Second operand 16 states and 178 transitions. [2024-11-24 02:07:38,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 681 transitions, 17815 flow [2024-11-24 02:07:39,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 681 transitions, 17328 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-11-24 02:07:39,620 INFO L231 Difference]: Finished difference. Result has 395 places, 611 transitions, 16360 flow [2024-11-24 02:07:39,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=14642, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=16360, PETRI_PLACES=395, PETRI_TRANSITIONS=611} [2024-11-24 02:07:39,621 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 369 predicate places. [2024-11-24 02:07:39,621 INFO L471 AbstractCegarLoop]: Abstraction has has 395 places, 611 transitions, 16360 flow [2024-11-24 02:07:39,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:39,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:39,622 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:39,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 02:07:39,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-24 02:07:39,822 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:39,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:39,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1873837141, now seen corresponding path program 5 times [2024-11-24 02:07:39,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:39,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673349868] [2024-11-24 02:07:39,823 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:07:39,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:39,863 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-24 02:07:39,863 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 02:07:40,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:40,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673349868] [2024-11-24 02:07:40,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673349868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:40,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108450426] [2024-11-24 02:07:40,833 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 02:07:40,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:40,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:40,839 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:40,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 02:07:41,094 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-24 02:07:41,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:41,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 02:07:41,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:41,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:07:41,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-24 02:07:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:41,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:41,517 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-24 02:07:41,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-24 02:07:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108450426] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:41,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:07:41,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 8] total 22 [2024-11-24 02:07:41,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644198109] [2024-11-24 02:07:41,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:41,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:07:41,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:41,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:07:41,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2024-11-24 02:07:41,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:41,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 611 transitions, 16360 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:41,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:41,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:41,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:45,131 INFO L124 PetriNetUnfolderBase]: 5746/10479 cut-off events. [2024-11-24 02:07:45,131 INFO L125 PetriNetUnfolderBase]: For 183002/183002 co-relation queries the response was YES. [2024-11-24 02:07:45,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85778 conditions, 10479 events. 5746/10479 cut-off events. For 183002/183002 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 78288 event pairs, 1314 based on Foata normal form. 34/10513 useless extension candidates. Maximal degree in co-relation 85670. Up to 3700 conditions per place. [2024-11-24 02:07:45,314 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 343 selfloop transitions, 345 changer transitions 1/690 dead transitions. [2024-11-24 02:07:45,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 690 transitions, 18487 flow [2024-11-24 02:07:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 02:07:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-24 02:07:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 174 transitions. [2024-11-24 02:07:45,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47802197802197804 [2024-11-24 02:07:45,315 INFO L175 Difference]: Start difference. First operand has 395 places, 611 transitions, 16360 flow. Second operand 13 states and 174 transitions. [2024-11-24 02:07:45,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 690 transitions, 18487 flow [2024-11-24 02:07:46,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 690 transitions, 18094 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-11-24 02:07:46,983 INFO L231 Difference]: Finished difference. Result has 401 places, 615 transitions, 17148 flow [2024-11-24 02:07:46,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=15928, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17148, PETRI_PLACES=401, PETRI_TRANSITIONS=615} [2024-11-24 02:07:46,984 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 375 predicate places. [2024-11-24 02:07:46,984 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 615 transitions, 17148 flow [2024-11-24 02:07:46,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:46,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:46,985 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:46,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 02:07:47,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:47,185 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:47,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1159162460, now seen corresponding path program 7 times [2024-11-24 02:07:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:47,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606095099] [2024-11-24 02:07:47,186 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:07:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606095099] [2024-11-24 02:07:47,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606095099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456804586] [2024-11-24 02:07:47,909 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:07:47,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:47,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:47,912 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:47,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 02:07:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:48,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 02:07:48,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:48,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:07:48,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-24 02:07:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:48,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:48,550 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-24 02:07:48,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-24 02:07:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:48,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456804586] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:48,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:07:48,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-11-24 02:07:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557668718] [2024-11-24 02:07:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:48,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:07:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:48,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:07:48,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-24 02:07:48,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:48,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 615 transitions, 17148 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:48,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:48,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:48,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:52,584 INFO L124 PetriNetUnfolderBase]: 5641/10287 cut-off events. [2024-11-24 02:07:52,584 INFO L125 PetriNetUnfolderBase]: For 206301/206301 co-relation queries the response was YES. [2024-11-24 02:07:52,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87386 conditions, 10287 events. 5641/10287 cut-off events. For 206301/206301 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 76720 event pairs, 1132 based on Foata normal form. 30/10317 useless extension candidates. Maximal degree in co-relation 87279. Up to 3058 conditions per place. [2024-11-24 02:07:52,758 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 403 selfloop transitions, 284 changer transitions 0/688 dead transitions. [2024-11-24 02:07:52,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 688 transitions, 19001 flow [2024-11-24 02:07:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 02:07:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 02:07:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-11-24 02:07:52,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-11-24 02:07:52,759 INFO L175 Difference]: Start difference. First operand has 401 places, 615 transitions, 17148 flow. Second operand 14 states and 174 transitions. [2024-11-24 02:07:52,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 688 transitions, 19001 flow [2024-11-24 02:07:54,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 688 transitions, 18763 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-24 02:07:54,313 INFO L231 Difference]: Finished difference. Result has 408 places, 611 transitions, 17407 flow [2024-11-24 02:07:54,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=16747, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17407, PETRI_PLACES=408, PETRI_TRANSITIONS=611} [2024-11-24 02:07:54,314 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 382 predicate places. [2024-11-24 02:07:54,314 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 611 transitions, 17407 flow [2024-11-24 02:07:54,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:54,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:07:54,314 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:54,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 02:07:54,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:54,515 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:07:54,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1298115112, now seen corresponding path program 8 times [2024-11-24 02:07:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:54,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445135639] [2024-11-24 02:07:54,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:07:54,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:54,559 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:07:54,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:07:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:07:55,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:55,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445135639] [2024-11-24 02:07:55,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445135639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:55,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:55,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 02:07:55,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382593664] [2024-11-24 02:07:55,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:55,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:07:55,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:55,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:07:55,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:07:55,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:07:55,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 611 transitions, 17407 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:55,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:07:55,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:07:55,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:07:58,723 INFO L124 PetriNetUnfolderBase]: 5720/10456 cut-off events. [2024-11-24 02:07:58,723 INFO L125 PetriNetUnfolderBase]: For 204552/204552 co-relation queries the response was YES. [2024-11-24 02:07:58,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90107 conditions, 10456 events. 5720/10456 cut-off events. For 204552/204552 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 78376 event pairs, 2680 based on Foata normal form. 5/10461 useless extension candidates. Maximal degree in co-relation 89999. Up to 7486 conditions per place. [2024-11-24 02:07:58,887 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 541 selfloop transitions, 106 changer transitions 5/653 dead transitions. [2024-11-24 02:07:58,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 653 transitions, 19016 flow [2024-11-24 02:07:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 02:07:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 02:07:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2024-11-24 02:07:58,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33163265306122447 [2024-11-24 02:07:58,889 INFO L175 Difference]: Start difference. First operand has 408 places, 611 transitions, 17407 flow. Second operand 14 states and 130 transitions. [2024-11-24 02:07:58,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 653 transitions, 19016 flow [2024-11-24 02:08:00,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 653 transitions, 18484 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-11-24 02:08:00,521 INFO L231 Difference]: Finished difference. Result has 412 places, 614 transitions, 17239 flow [2024-11-24 02:08:00,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=16854, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17239, PETRI_PLACES=412, PETRI_TRANSITIONS=614} [2024-11-24 02:08:00,522 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 386 predicate places. [2024-11-24 02:08:00,522 INFO L471 AbstractCegarLoop]: Abstraction has has 412 places, 614 transitions, 17239 flow [2024-11-24 02:08:00,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:00,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:08:00,522 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:00,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-24 02:08:00,522 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:08:00,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -201223368, now seen corresponding path program 9 times [2024-11-24 02:08:00,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:00,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122177482] [2024-11-24 02:08:00,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:08:00,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:00,542 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 02:08:00,542 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:08:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:00,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122177482] [2024-11-24 02:08:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122177482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 02:08:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94026379] [2024-11-24 02:08:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:00,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:08:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:00,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:08:00,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:08:00,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:08:00,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 614 transitions, 17239 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:00,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:08:00,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:08:00,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:08:04,657 INFO L124 PetriNetUnfolderBase]: 5648/10326 cut-off events. [2024-11-24 02:08:04,657 INFO L125 PetriNetUnfolderBase]: For 200954/200954 co-relation queries the response was YES. [2024-11-24 02:08:04,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87587 conditions, 10326 events. 5648/10326 cut-off events. For 200954/200954 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 77244 event pairs, 2714 based on Foata normal form. 5/10331 useless extension candidates. Maximal degree in co-relation 87480. Up to 7633 conditions per place. [2024-11-24 02:08:04,818 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 549 selfloop transitions, 90 changer transitions 3/643 dead transitions. [2024-11-24 02:08:04,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 643 transitions, 18719 flow [2024-11-24 02:08:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:08:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 02:08:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-11-24 02:08:04,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-24 02:08:04,820 INFO L175 Difference]: Start difference. First operand has 412 places, 614 transitions, 17239 flow. Second operand 11 states and 112 transitions. [2024-11-24 02:08:04,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 643 transitions, 18719 flow [2024-11-24 02:08:06,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 643 transitions, 18528 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-11-24 02:08:06,420 INFO L231 Difference]: Finished difference. Result has 409 places, 610 transitions, 17126 flow [2024-11-24 02:08:06,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=16971, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17126, PETRI_PLACES=409, PETRI_TRANSITIONS=610} [2024-11-24 02:08:06,421 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 383 predicate places. [2024-11-24 02:08:06,421 INFO L471 AbstractCegarLoop]: Abstraction has has 409 places, 610 transitions, 17126 flow [2024-11-24 02:08:06,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:06,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:08:06,421 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:06,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-24 02:08:06,421 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:08:06,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -798560026, now seen corresponding path program 10 times [2024-11-24 02:08:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:06,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264533461] [2024-11-24 02:08:06,422 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:08:06,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:06,437 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:08:06,438 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:08:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264533461] [2024-11-24 02:08:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264533461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:06,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:06,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:08:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786482288] [2024-11-24 02:08:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:06,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:08:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:06,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:08:06,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:08:06,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:08:06,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 610 transitions, 17126 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:06,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:08:06,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:08:06,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:08:09,864 INFO L124 PetriNetUnfolderBase]: 5851/10642 cut-off events. [2024-11-24 02:08:09,864 INFO L125 PetriNetUnfolderBase]: For 212232/212232 co-relation queries the response was YES. [2024-11-24 02:08:09,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91326 conditions, 10642 events. 5851/10642 cut-off events. For 212232/212232 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 79372 event pairs, 1249 based on Foata normal form. 5/10647 useless extension candidates. Maximal degree in co-relation 91219. Up to 2793 conditions per place. [2024-11-24 02:08:10,045 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 407 selfloop transitions, 273 changer transitions 4/685 dead transitions. [2024-11-24 02:08:10,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 685 transitions, 19443 flow [2024-11-24 02:08:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 02:08:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 02:08:10,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-11-24 02:08:10,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40561224489795916 [2024-11-24 02:08:10,047 INFO L175 Difference]: Start difference. First operand has 409 places, 610 transitions, 17126 flow. Second operand 14 states and 159 transitions. [2024-11-24 02:08:10,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 685 transitions, 19443 flow [2024-11-24 02:08:11,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 685 transitions, 19186 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-24 02:08:11,923 INFO L231 Difference]: Finished difference. Result has 414 places, 615 transitions, 17828 flow [2024-11-24 02:08:11,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=16687, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17828, PETRI_PLACES=414, PETRI_TRANSITIONS=615} [2024-11-24 02:08:11,924 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 388 predicate places. [2024-11-24 02:08:11,924 INFO L471 AbstractCegarLoop]: Abstraction has has 414 places, 615 transitions, 17828 flow [2024-11-24 02:08:11,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:11,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:08:11,925 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:11,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-24 02:08:11,925 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:08:11,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 833601343, now seen corresponding path program 6 times [2024-11-24 02:08:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542081477] [2024-11-24 02:08:11,926 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:08:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:11,969 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-24 02:08:11,969 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:08:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:12,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:12,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542081477] [2024-11-24 02:08:12,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542081477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:08:12,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116762809] [2024-11-24 02:08:12,589 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 02:08:12,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:08:12,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:08:12,591 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:08:12,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 02:08:12,817 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-24 02:08:12,817 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:08:12,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 02:08:12,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:08:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:13,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:08:13,193 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-24 02:08:13,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-24 02:08:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:13,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116762809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:08:13,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:08:13,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 16 [2024-11-24 02:08:13,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101512428] [2024-11-24 02:08:13,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:08:13,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 02:08:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:13,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 02:08:13,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:08:13,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:08:13,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 615 transitions, 17828 flow. Second operand has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:13,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:08:13,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:08:13,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:08:16,897 INFO L124 PetriNetUnfolderBase]: 5651/10277 cut-off events. [2024-11-24 02:08:16,898 INFO L125 PetriNetUnfolderBase]: For 221908/221908 co-relation queries the response was YES. [2024-11-24 02:08:17,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90842 conditions, 10277 events. 5651/10277 cut-off events. For 221908/221908 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 76023 event pairs, 1209 based on Foata normal form. 45/10322 useless extension candidates. Maximal degree in co-relation 90733. Up to 3460 conditions per place. [2024-11-24 02:08:17,059 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 355 selfloop transitions, 360 changer transitions 1/717 dead transitions. [2024-11-24 02:08:17,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 717 transitions, 20374 flow [2024-11-24 02:08:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 02:08:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-24 02:08:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 203 transitions. [2024-11-24 02:08:17,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-11-24 02:08:17,060 INFO L175 Difference]: Start difference. First operand has 414 places, 615 transitions, 17828 flow. Second operand 18 states and 203 transitions. [2024-11-24 02:08:17,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 717 transitions, 20374 flow [2024-11-24 02:08:18,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 717 transitions, 20021 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-11-24 02:08:18,953 INFO L231 Difference]: Finished difference. Result has 422 places, 638 transitions, 19087 flow [2024-11-24 02:08:18,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=17322, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=19087, PETRI_PLACES=422, PETRI_TRANSITIONS=638} [2024-11-24 02:08:18,954 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 396 predicate places. [2024-11-24 02:08:18,954 INFO L471 AbstractCegarLoop]: Abstraction has has 422 places, 638 transitions, 19087 flow [2024-11-24 02:08:18,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:18,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:08:18,955 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:18,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 02:08:19,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-24 02:08:19,159 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:08:19,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1900035497, now seen corresponding path program 7 times [2024-11-24 02:08:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:19,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014590148] [2024-11-24 02:08:19,160 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 02:08:19,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:19,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:19,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014590148] [2024-11-24 02:08:19,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014590148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:19,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:19,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 02:08:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671809203] [2024-11-24 02:08:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:19,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:08:19,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:19,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:08:19,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:08:19,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:08:19,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 638 transitions, 19087 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:19,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:08:19,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:08:19,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:08:23,110 INFO L124 PetriNetUnfolderBase]: 5583/10129 cut-off events. [2024-11-24 02:08:23,110 INFO L125 PetriNetUnfolderBase]: For 227183/227183 co-relation queries the response was YES. [2024-11-24 02:08:23,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91506 conditions, 10129 events. 5583/10129 cut-off events. For 227183/227183 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 74542 event pairs, 2665 based on Foata normal form. 4/10133 useless extension candidates. Maximal degree in co-relation 91395. Up to 7975 conditions per place. [2024-11-24 02:08:23,291 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 516 selfloop transitions, 137 changer transitions 4/658 dead transitions. [2024-11-24 02:08:23,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 658 transitions, 20390 flow [2024-11-24 02:08:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:08:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 02:08:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-11-24 02:08:23,292 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3474025974025974 [2024-11-24 02:08:23,292 INFO L175 Difference]: Start difference. First operand has 422 places, 638 transitions, 19087 flow. Second operand 11 states and 107 transitions. [2024-11-24 02:08:23,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 658 transitions, 20390 flow [2024-11-24 02:08:25,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 658 transitions, 19911 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-11-24 02:08:25,311 INFO L231 Difference]: Finished difference. Result has 418 places, 634 transitions, 18760 flow [2024-11-24 02:08:25,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=18510, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18760, PETRI_PLACES=418, PETRI_TRANSITIONS=634} [2024-11-24 02:08:25,312 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 392 predicate places. [2024-11-24 02:08:25,312 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 634 transitions, 18760 flow [2024-11-24 02:08:25,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:25,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:08:25,312 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:25,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-24 02:08:25,313 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:08:25,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash -649236801, now seen corresponding path program 8 times [2024-11-24 02:08:25,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:25,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913260777] [2024-11-24 02:08:25,313 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:08:25,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:25,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:08:25,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:08:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:25,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:25,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913260777] [2024-11-24 02:08:25,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913260777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:25,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:25,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 02:08:25,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727803119] [2024-11-24 02:08:25,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:25,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:08:25,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:25,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:08:25,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:08:25,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:08:25,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 634 transitions, 18760 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:25,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:08:25,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:08:25,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:08:29,324 INFO L124 PetriNetUnfolderBase]: 5573/10111 cut-off events. [2024-11-24 02:08:29,324 INFO L125 PetriNetUnfolderBase]: For 221228/221228 co-relation queries the response was YES. [2024-11-24 02:08:29,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90313 conditions, 10111 events. 5573/10111 cut-off events. For 221228/221228 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 74411 event pairs, 2610 based on Foata normal form. 4/10115 useless extension candidates. Maximal degree in co-relation 90204. Up to 7963 conditions per place. [2024-11-24 02:08:29,479 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 496 selfloop transitions, 161 changer transitions 4/662 dead transitions. [2024-11-24 02:08:29,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 662 transitions, 20121 flow [2024-11-24 02:08:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 02:08:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 02:08:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-11-24 02:08:29,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-24 02:08:29,481 INFO L175 Difference]: Start difference. First operand has 418 places, 634 transitions, 18760 flow. Second operand 12 states and 116 transitions. [2024-11-24 02:08:29,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 662 transitions, 20121 flow [2024-11-24 02:08:31,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 662 transitions, 19969 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-24 02:08:31,295 INFO L231 Difference]: Finished difference. Result has 420 places, 631 transitions, 18828 flow [2024-11-24 02:08:31,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=18530, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=18828, PETRI_PLACES=420, PETRI_TRANSITIONS=631} [2024-11-24 02:08:31,296 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 394 predicate places. [2024-11-24 02:08:31,296 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 631 transitions, 18828 flow [2024-11-24 02:08:31,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:31,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:08:31,296 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:31,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-24 02:08:31,296 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:08:31,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash -187528727, now seen corresponding path program 9 times [2024-11-24 02:08:31,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:31,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626397251] [2024-11-24 02:08:31,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:08:31,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:31,327 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 02:08:31,328 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:08:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:31,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626397251] [2024-11-24 02:08:31,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626397251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:08:31,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000716585] [2024-11-24 02:08:31,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 02:08:31,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:08:31,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:08:31,738 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:08:31,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 02:08:31,971 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 02:08:31,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:08:31,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 02:08:31,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:08:32,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:08:32,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 70 [2024-11-24 02:08:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:32,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:08:32,321 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-24 02:08:32,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 95 [2024-11-24 02:08:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000716585] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 02:08:32,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:08:32,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-11-24 02:08:32,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759449107] [2024-11-24 02:08:32,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:32,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:08:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:32,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:08:32,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-24 02:08:32,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:08:32,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 631 transitions, 18828 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:32,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:08:32,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:08:32,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:08:35,689 INFO L124 PetriNetUnfolderBase]: 5717/10406 cut-off events. [2024-11-24 02:08:35,689 INFO L125 PetriNetUnfolderBase]: For 242405/242405 co-relation queries the response was YES. [2024-11-24 02:08:35,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92258 conditions, 10406 events. 5717/10406 cut-off events. For 242405/242405 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 77175 event pairs, 1489 based on Foata normal form. 34/10440 useless extension candidates. Maximal degree in co-relation 92149. Up to 4207 conditions per place. [2024-11-24 02:08:35,852 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 368 selfloop transitions, 306 changer transitions 1/676 dead transitions. [2024-11-24 02:08:35,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 676 transitions, 20351 flow [2024-11-24 02:08:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 02:08:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 02:08:35,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-11-24 02:08:35,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-11-24 02:08:35,853 INFO L175 Difference]: Start difference. First operand has 420 places, 631 transitions, 18828 flow. Second operand 10 states and 129 transitions. [2024-11-24 02:08:35,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 676 transitions, 20351 flow [2024-11-24 02:08:37,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 676 transitions, 19821 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-11-24 02:08:37,891 INFO L231 Difference]: Finished difference. Result has 415 places, 625 transitions, 18809 flow [2024-11-24 02:08:37,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=17771, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18809, PETRI_PLACES=415, PETRI_TRANSITIONS=625} [2024-11-24 02:08:37,892 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 389 predicate places. [2024-11-24 02:08:37,892 INFO L471 AbstractCegarLoop]: Abstraction has has 415 places, 625 transitions, 18809 flow [2024-11-24 02:08:37,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:37,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:08:37,892 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:37,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 02:08:38,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094ac009-3c5b-448a-8bc3-f3c902a633f9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-24 02:08:38,093 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-24 02:08:38,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash 980959133, now seen corresponding path program 10 times [2024-11-24 02:08:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:38,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103251548] [2024-11-24 02:08:38,093 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 02:08:38,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:38,111 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 02:08:38,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:08:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 02:08:38,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:38,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103251548] [2024-11-24 02:08:38,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103251548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:38,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:38,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:08:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051173098] [2024-11-24 02:08:38,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:38,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:08:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:38,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:08:38,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:08:38,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-24 02:08:38,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 625 transitions, 18809 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:38,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:08:38,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-24 02:08:38,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand