./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:25:38,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:25:39,001 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:25:39,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:25:39,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:25:39,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:25:39,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:25:39,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:25:39,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:25:39,039 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:25:39,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:25:39,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:25:39,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:25:39,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:25:39,045 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:25:39,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:25:39,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:25:39,046 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:25:39,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:25:39,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:25:39,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:25:39,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:25:39,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:25:39,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:25:39,050 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:25:39,050 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:25:39,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:25:39,051 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:25:39,051 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:25:39,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:25:39,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:25:39,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:25:39,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:25:39,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:25:39,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:25:39,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:25:39,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:25:39,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:25:39,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:25:39,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:25:39,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:25:39,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:25:39,055 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-11-16 19:25:39,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:25:39,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:25:39,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:25:39,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:25:39,335 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:25:39,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-16 19:25:40,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:25:41,038 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:25:41,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-16 19:25:41,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c8ddc2ad/7af3d4687c874412ab1e8b7725425465/FLAG49ae000ce [2024-11-16 19:25:41,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c8ddc2ad/7af3d4687c874412ab1e8b7725425465 [2024-11-16 19:25:41,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:25:41,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:25:41,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:25:41,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:25:41,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:25:41,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41819e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41, skipping insertion in model container [2024-11-16 19:25:41,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,465 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:25:41,697 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3384,3397] [2024-11-16 19:25:41,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:25:41,714 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:25:41,757 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3384,3397] [2024-11-16 19:25:41,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:25:41,797 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:25:41,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41 WrapperNode [2024-11-16 19:25:41,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:25:41,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:25:41,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:25:41,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:25:41,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,863 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 166 [2024-11-16 19:25:41,864 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:25:41,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:25:41,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:25:41,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:25:41,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,881 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,906 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-16 19:25:41,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,916 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:25:41,927 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:25:41,927 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:25:41,928 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:25:41,929 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (1/1) ... [2024-11-16 19:25:41,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:25:41,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:41,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:25:41,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:25:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:25:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:25:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:25:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:25:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:25:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:25:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:25:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:25:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:25:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:25:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:25:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:25:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:25:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:25:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:25:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:25:42,008 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:25:42,115 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:25:42,117 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:25:42,549 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:25:42,549 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:25:42,873 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:25:42,873 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:25:42,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:42 BoogieIcfgContainer [2024-11-16 19:25:42,874 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:25:42,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:25:42,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:25:42,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:25:42,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:25:41" (1/3) ... [2024-11-16 19:25:42,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7491c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:42, skipping insertion in model container [2024-11-16 19:25:42,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:41" (2/3) ... [2024-11-16 19:25:42,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7491c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:42, skipping insertion in model container [2024-11-16 19:25:42,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:42" (3/3) ... [2024-11-16 19:25:42,887 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-11-16 19:25:42,904 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:25:42,904 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:25:42,905 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:25:42,976 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:25:43,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 64 transitions, 149 flow [2024-11-16 19:25:43,064 INFO L124 PetriNetUnfolderBase]: 18/61 cut-off events. [2024-11-16 19:25:43,065 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:25:43,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 18/61 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 46. Up to 3 conditions per place. [2024-11-16 19:25:43,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 64 transitions, 149 flow [2024-11-16 19:25:43,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 60 transitions, 138 flow [2024-11-16 19:25:43,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:25:43,088 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;@4529fafe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:25:43,088 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:25:43,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:25:43,112 INFO L124 PetriNetUnfolderBase]: 18/59 cut-off events. [2024-11-16 19:25:43,112 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:25:43,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:43,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:43,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:43,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:43,120 INFO L85 PathProgramCache]: Analyzing trace with hash -22423825, now seen corresponding path program 1 times [2024-11-16 19:25:43,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:43,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159998698] [2024-11-16 19:25:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:43,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:43,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:43,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159998698] [2024-11-16 19:25:43,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159998698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:43,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:43,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:25:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043557367] [2024-11-16 19:25:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:43,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:25:43,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:43,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:25:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:25:43,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:43,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 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) [2024-11-16 19:25:43,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:43,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:43,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:43,909 INFO L124 PetriNetUnfolderBase]: 2394/3365 cut-off events. [2024-11-16 19:25:43,909 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-11-16 19:25:43,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6671 conditions, 3365 events. 2394/3365 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14389 event pairs, 1444 based on Foata normal form. 313/2983 useless extension candidates. Maximal degree in co-relation 6216. Up to 3151 conditions per place. [2024-11-16 19:25:43,939 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 41 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2024-11-16 19:25:43,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 208 flow [2024-11-16 19:25:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:25:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:25:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 79 transitions. [2024-11-16 19:25:43,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-16 19:25:43,952 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 138 flow. Second operand 2 states and 79 transitions. [2024-11-16 19:25:43,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 208 flow [2024-11-16 19:25:43,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:25:43,960 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 114 flow [2024-11-16 19:25:43,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-11-16 19:25:43,966 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-16 19:25:43,967 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 114 flow [2024-11-16 19:25:43,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 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) [2024-11-16 19:25:43,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:43,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:43,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:25:43,968 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:43,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash -378231784, now seen corresponding path program 1 times [2024-11-16 19:25:43,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:43,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271269794] [2024-11-16 19:25:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:44,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:44,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271269794] [2024-11-16 19:25:44,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271269794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:44,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:44,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:44,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48982800] [2024-11-16 19:25:44,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:44,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:44,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:44,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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) [2024-11-16 19:25:44,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:44,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:44,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:44,890 INFO L124 PetriNetUnfolderBase]: 3125/4368 cut-off events. [2024-11-16 19:25:44,891 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-16 19:25:44,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8622 conditions, 4368 events. 3125/4368 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20430 event pairs, 1260 based on Foata normal form. 1/3510 useless extension candidates. Maximal degree in co-relation 8619. Up to 2675 conditions per place. [2024-11-16 19:25:44,912 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 60 selfloop transitions, 2 changer transitions 26/101 dead transitions. [2024-11-16 19:25:44,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 101 transitions, 391 flow [2024-11-16 19:25:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:25:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:25:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-11-16 19:25:44,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59765625 [2024-11-16 19:25:44,915 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 114 flow. Second operand 4 states and 153 transitions. [2024-11-16 19:25:44,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 101 transitions, 391 flow [2024-11-16 19:25:44,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 101 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:44,919 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 124 flow [2024-11-16 19:25:44,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2024-11-16 19:25:44,920 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-16 19:25:44,920 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 124 flow [2024-11-16 19:25:44,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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) [2024-11-16 19:25:44,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:44,921 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:44,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:25:44,922 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:44,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:44,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1701655553, now seen corresponding path program 1 times [2024-11-16 19:25:44,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:44,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111563834] [2024-11-16 19:25:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:45,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111563834] [2024-11-16 19:25:45,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111563834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:45,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:45,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224110921] [2024-11-16 19:25:45,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:45,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:45,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:45,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:45,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:45,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:45,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:45,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:45,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:46,223 INFO L124 PetriNetUnfolderBase]: 3005/4331 cut-off events. [2024-11-16 19:25:46,224 INFO L125 PetriNetUnfolderBase]: For 499/499 co-relation queries the response was YES. [2024-11-16 19:25:46,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 4331 events. 3005/4331 cut-off events. For 499/499 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21415 event pairs, 385 based on Foata normal form. 1/3807 useless extension candidates. Maximal degree in co-relation 9079. Up to 2564 conditions per place. [2024-11-16 19:25:46,247 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 81 selfloop transitions, 2 changer transitions 13/109 dead transitions. [2024-11-16 19:25:46,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 109 transitions, 453 flow [2024-11-16 19:25:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-11-16 19:25:46,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-11-16 19:25:46,250 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 124 flow. Second operand 5 states and 174 transitions. [2024-11-16 19:25:46,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 109 transitions, 453 flow [2024-11-16 19:25:46,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 109 transitions, 443 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:46,278 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 135 flow [2024-11-16 19:25:46,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-11-16 19:25:46,279 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-16 19:25:46,280 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 135 flow [2024-11-16 19:25:46,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:46,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:46,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:46,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:25:46,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:46,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash 937479079, now seen corresponding path program 2 times [2024-11-16 19:25:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:46,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900789830] [2024-11-16 19:25:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:46,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:46,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:46,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900789830] [2024-11-16 19:25:46,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900789830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:46,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:46,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705759487] [2024-11-16 19:25:46,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:46,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:46,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:46,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:46,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:46,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:46,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:46,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:46,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:47,503 INFO L124 PetriNetUnfolderBase]: 3717/5346 cut-off events. [2024-11-16 19:25:47,503 INFO L125 PetriNetUnfolderBase]: For 1335/1335 co-relation queries the response was YES. [2024-11-16 19:25:47,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11636 conditions, 5346 events. 3717/5346 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 27271 event pairs, 731 based on Foata normal form. 1/4996 useless extension candidates. Maximal degree in co-relation 11628. Up to 2262 conditions per place. [2024-11-16 19:25:47,534 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 95 selfloop transitions, 11 changer transitions 14/133 dead transitions. [2024-11-16 19:25:47,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 133 transitions, 590 flow [2024-11-16 19:25:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-11-16 19:25:47,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-11-16 19:25:47,537 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 135 flow. Second operand 6 states and 210 transitions. [2024-11-16 19:25:47,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 133 transitions, 590 flow [2024-11-16 19:25:47,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 133 transitions, 580 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:47,545 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 203 flow [2024-11-16 19:25:47,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-16 19:25:47,546 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-16 19:25:47,546 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 203 flow [2024-11-16 19:25:47,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:47,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:47,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:25:47,547 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:47,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash 650499295, now seen corresponding path program 3 times [2024-11-16 19:25:47,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:47,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500056037] [2024-11-16 19:25:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:47,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:48,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500056037] [2024-11-16 19:25:48,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500056037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:48,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:48,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:48,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545714105] [2024-11-16 19:25:48,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:48,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:48,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:48,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:48,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:48,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:48,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:48,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:48,709 INFO L124 PetriNetUnfolderBase]: 4051/5957 cut-off events. [2024-11-16 19:25:48,709 INFO L125 PetriNetUnfolderBase]: For 2563/2596 co-relation queries the response was YES. [2024-11-16 19:25:48,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14544 conditions, 5957 events. 4051/5957 cut-off events. For 2563/2596 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 32968 event pairs, 653 based on Foata normal form. 4/5925 useless extension candidates. Maximal degree in co-relation 14534. Up to 3764 conditions per place. [2024-11-16 19:25:48,750 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 90 selfloop transitions, 4 changer transitions 14/121 dead transitions. [2024-11-16 19:25:48,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 121 transitions, 601 flow [2024-11-16 19:25:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2024-11-16 19:25:48,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-16 19:25:48,752 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 203 flow. Second operand 5 states and 172 transitions. [2024-11-16 19:25:48,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 121 transitions, 601 flow [2024-11-16 19:25:48,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 589 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:48,778 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 229 flow [2024-11-16 19:25:48,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-11-16 19:25:48,780 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-11-16 19:25:48,781 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 229 flow [2024-11-16 19:25:48,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:48,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:48,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:25:48,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:48,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash 679475713, now seen corresponding path program 4 times [2024-11-16 19:25:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:48,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106825888] [2024-11-16 19:25:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:49,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106825888] [2024-11-16 19:25:49,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106825888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:49,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:49,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:25:49,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250761731] [2024-11-16 19:25:49,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:49,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:25:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:49,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:25:49,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:25:49,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:25:49,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 229 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:49,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:49,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:25:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:50,715 INFO L124 PetriNetUnfolderBase]: 7719/11223 cut-off events. [2024-11-16 19:25:50,716 INFO L125 PetriNetUnfolderBase]: For 7454/7599 co-relation queries the response was YES. [2024-11-16 19:25:50,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28122 conditions, 11223 events. 7719/11223 cut-off events. For 7454/7599 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 66245 event pairs, 4364 based on Foata normal form. 31/11109 useless extension candidates. Maximal degree in co-relation 28109. Up to 5218 conditions per place. [2024-11-16 19:25:50,791 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 143 selfloop transitions, 9 changer transitions 13/175 dead transitions. [2024-11-16 19:25:50,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 175 transitions, 923 flow [2024-11-16 19:25:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:25:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:25:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-11-16 19:25:50,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-11-16 19:25:50,794 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 229 flow. Second operand 8 states and 244 transitions. [2024-11-16 19:25:50,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 175 transitions, 923 flow [2024-11-16 19:25:50,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 175 transitions, 904 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-16 19:25:50,847 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 321 flow [2024-11-16 19:25:50,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-11-16 19:25:50,848 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-11-16 19:25:50,849 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 321 flow [2024-11-16 19:25:50,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:50,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:50,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:50,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:25:50,850 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:50,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -881404313, now seen corresponding path program 5 times [2024-11-16 19:25:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:50,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328505081] [2024-11-16 19:25:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328505081] [2024-11-16 19:25:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328505081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:51,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:51,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698369279] [2024-11-16 19:25:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:51,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:51,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:51,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:51,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:51,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:51,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:51,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:52,608 INFO L124 PetriNetUnfolderBase]: 8881/13104 cut-off events. [2024-11-16 19:25:52,608 INFO L125 PetriNetUnfolderBase]: For 9058/9219 co-relation queries the response was YES. [2024-11-16 19:25:52,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32918 conditions, 13104 events. 8881/13104 cut-off events. For 9058/9219 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 81010 event pairs, 4494 based on Foata normal form. 22/12992 useless extension candidates. Maximal degree in co-relation 32901. Up to 8974 conditions per place. [2024-11-16 19:25:52,683 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 95 selfloop transitions, 7 changer transitions 14/130 dead transitions. [2024-11-16 19:25:52,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 756 flow [2024-11-16 19:25:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2024-11-16 19:25:52,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-16 19:25:52,685 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 321 flow. Second operand 5 states and 172 transitions. [2024-11-16 19:25:52,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 756 flow [2024-11-16 19:25:52,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 130 transitions, 748 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:52,764 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 368 flow [2024-11-16 19:25:52,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-11-16 19:25:52,765 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-16 19:25:52,765 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 368 flow [2024-11-16 19:25:52,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:52,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:52,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:52,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:25:52,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:52,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1608150817, now seen corresponding path program 6 times [2024-11-16 19:25:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382963702] [2024-11-16 19:25:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:52,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:53,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382963702] [2024-11-16 19:25:53,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382963702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:53,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:53,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180617114] [2024-11-16 19:25:53,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:53,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:53,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:53,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:53,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:53,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:53,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:54,377 INFO L124 PetriNetUnfolderBase]: 8985/13006 cut-off events. [2024-11-16 19:25:54,378 INFO L125 PetriNetUnfolderBase]: For 12127/12353 co-relation queries the response was YES. [2024-11-16 19:25:54,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33650 conditions, 13006 events. 8985/13006 cut-off events. For 12127/12353 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 77885 event pairs, 1850 based on Foata normal form. 134/12981 useless extension candidates. Maximal degree in co-relation 33631. Up to 7245 conditions per place. [2024-11-16 19:25:54,604 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 86 selfloop transitions, 14 changer transitions 20/134 dead transitions. [2024-11-16 19:25:54,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 134 transitions, 790 flow [2024-11-16 19:25:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-16 19:25:54,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-11-16 19:25:54,607 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 368 flow. Second operand 6 states and 199 transitions. [2024-11-16 19:25:54,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 134 transitions, 790 flow [2024-11-16 19:25:54,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 134 transitions, 781 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:54,722 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 388 flow [2024-11-16 19:25:54,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-16 19:25:54,724 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-16 19:25:54,725 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 388 flow [2024-11-16 19:25:54,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:54,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:54,726 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:54,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:25:54,726 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:54,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash -904056737, now seen corresponding path program 1 times [2024-11-16 19:25:54,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:54,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856620951] [2024-11-16 19:25:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:54,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:55,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:55,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856620951] [2024-11-16 19:25:55,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856620951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:55,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313366193] [2024-11-16 19:25:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:55,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:55,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:55,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:55,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:25:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:55,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:25:55,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:25:55,418 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:25:55,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313366193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:55,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:25:55,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-16 19:25:55,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272821840] [2024-11-16 19:25:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:55,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:55,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:55,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:55,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:25:55,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:55,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:55,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:55,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:55,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:56,755 INFO L124 PetriNetUnfolderBase]: 8699/12604 cut-off events. [2024-11-16 19:25:56,756 INFO L125 PetriNetUnfolderBase]: For 15106/15332 co-relation queries the response was YES. [2024-11-16 19:25:56,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33560 conditions, 12604 events. 8699/12604 cut-off events. For 15106/15332 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 76006 event pairs, 4536 based on Foata normal form. 61/12496 useless extension candidates. Maximal degree in co-relation 33539. Up to 8966 conditions per place. [2024-11-16 19:25:56,833 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 93 selfloop transitions, 10 changer transitions 13/130 dead transitions. [2024-11-16 19:25:56,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 130 transitions, 781 flow [2024-11-16 19:25:56,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-16 19:25:56,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-11-16 19:25:56,835 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 388 flow. Second operand 5 states and 175 transitions. [2024-11-16 19:25:56,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 130 transitions, 781 flow [2024-11-16 19:25:56,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 758 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-16 19:25:56,949 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 396 flow [2024-11-16 19:25:56,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-11-16 19:25:56,950 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-16 19:25:56,950 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 396 flow [2024-11-16 19:25:56,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:56,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:56,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:56,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:25:57,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:57,154 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:57,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1709197012, now seen corresponding path program 1 times [2024-11-16 19:25:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264516304] [2024-11-16 19:25:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:57,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264516304] [2024-11-16 19:25:57,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264516304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:57,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:57,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:57,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744488183] [2024-11-16 19:25:57,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:57,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:57,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:57,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:57,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:57,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:25:57,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:57,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:57,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:58,373 INFO L124 PetriNetUnfolderBase]: 9973/15147 cut-off events. [2024-11-16 19:25:58,374 INFO L125 PetriNetUnfolderBase]: For 17668/17698 co-relation queries the response was YES. [2024-11-16 19:25:58,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38811 conditions, 15147 events. 9973/15147 cut-off events. For 17668/17698 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 100720 event pairs, 862 based on Foata normal form. 118/15189 useless extension candidates. Maximal degree in co-relation 38789. Up to 8354 conditions per place. [2024-11-16 19:25:58,457 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 103 selfloop transitions, 7 changer transitions 0/124 dead transitions. [2024-11-16 19:25:58,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 838 flow [2024-11-16 19:25:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:25:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:25:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-16 19:25:58,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57421875 [2024-11-16 19:25:58,459 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 396 flow. Second operand 4 states and 147 transitions. [2024-11-16 19:25:58,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 838 flow [2024-11-16 19:25:58,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 806 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:58,603 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 458 flow [2024-11-16 19:25:58,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=458, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-11-16 19:25:58,606 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-16 19:25:58,606 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 458 flow [2024-11-16 19:25:58,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:25:58,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:58,607 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:58,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 19:25:58,607 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:58,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:58,607 INFO L85 PathProgramCache]: Analyzing trace with hash 513288086, now seen corresponding path program 2 times [2024-11-16 19:25:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826901066] [2024-11-16 19:25:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:58,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:58,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:58,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826901066] [2024-11-16 19:25:58,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826901066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:58,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:58,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:58,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522330791] [2024-11-16 19:25:58,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:58,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:58,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:58,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:58,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:25:58,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:58,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:58,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:59,556 INFO L124 PetriNetUnfolderBase]: 9313/14231 cut-off events. [2024-11-16 19:25:59,556 INFO L125 PetriNetUnfolderBase]: For 16455/16455 co-relation queries the response was YES. [2024-11-16 19:25:59,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37602 conditions, 14231 events. 9313/14231 cut-off events. For 16455/16455 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 94020 event pairs, 1140 based on Foata normal form. 112/14313 useless extension candidates. Maximal degree in co-relation 37581. Up to 7828 conditions per place. [2024-11-16 19:25:59,632 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 106 selfloop transitions, 8 changer transitions 0/128 dead transitions. [2024-11-16 19:25:59,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 889 flow [2024-11-16 19:25:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:25:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:25:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-16 19:25:59,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57421875 [2024-11-16 19:25:59,633 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 458 flow. Second operand 4 states and 147 transitions. [2024-11-16 19:25:59,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 889 flow [2024-11-16 19:25:59,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 889 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:59,708 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 529 flow [2024-11-16 19:25:59,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-11-16 19:25:59,709 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-11-16 19:25:59,709 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 529 flow [2024-11-16 19:25:59,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:25:59,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:59,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:59,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 19:25:59,710 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:59,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash 243736713, now seen corresponding path program 1 times [2024-11-16 19:25:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229097354] [2024-11-16 19:25:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:59,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:59,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229097354] [2024-11-16 19:25:59,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229097354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:59,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:59,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:59,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040275798] [2024-11-16 19:25:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:59,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:59,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:25:59,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:25:59,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:59,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:25:59,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:00,936 INFO L124 PetriNetUnfolderBase]: 9441/14233 cut-off events. [2024-11-16 19:26:00,936 INFO L125 PetriNetUnfolderBase]: For 19587/19683 co-relation queries the response was YES. [2024-11-16 19:26:00,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39395 conditions, 14233 events. 9441/14233 cut-off events. For 19587/19683 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 92494 event pairs, 2418 based on Foata normal form. 102/14182 useless extension candidates. Maximal degree in co-relation 39371. Up to 8160 conditions per place. [2024-11-16 19:26:01,022 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 100 selfloop transitions, 18 changer transitions 3/135 dead transitions. [2024-11-16 19:26:01,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 942 flow [2024-11-16 19:26:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:26:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:26:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-16 19:26:01,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-11-16 19:26:01,024 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 529 flow. Second operand 5 states and 173 transitions. [2024-11-16 19:26:01,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 942 flow [2024-11-16 19:26:01,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 135 transitions, 940 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-16 19:26:01,117 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 624 flow [2024-11-16 19:26:01,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2024-11-16 19:26:01,119 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 45 predicate places. [2024-11-16 19:26:01,119 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 624 flow [2024-11-16 19:26:01,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:01,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:01,120 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:01,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 19:26:01,120 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:01,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1035447140, now seen corresponding path program 3 times [2024-11-16 19:26:01,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:01,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021769916] [2024-11-16 19:26:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:01,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:01,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:01,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021769916] [2024-11-16 19:26:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021769916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:01,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:01,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835406082] [2024-11-16 19:26:01,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:01,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:01,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:01,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:01,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:01,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:01,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:02,439 INFO L124 PetriNetUnfolderBase]: 8977/13479 cut-off events. [2024-11-16 19:26:02,440 INFO L125 PetriNetUnfolderBase]: For 24101/24199 co-relation queries the response was YES. [2024-11-16 19:26:02,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38577 conditions, 13479 events. 8977/13479 cut-off events. For 24101/24199 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 86740 event pairs, 1920 based on Foata normal form. 88/13408 useless extension candidates. Maximal degree in co-relation 38551. Up to 8666 conditions per place. [2024-11-16 19:26:02,512 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 101 selfloop transitions, 19 changer transitions 2/136 dead transitions. [2024-11-16 19:26:02,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1033 flow [2024-11-16 19:26:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:26:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:26:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-11-16 19:26:02,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.534375 [2024-11-16 19:26:02,514 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 624 flow. Second operand 5 states and 171 transitions. [2024-11-16 19:26:02,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1033 flow [2024-11-16 19:26:02,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 136 transitions, 999 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-16 19:26:02,627 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 658 flow [2024-11-16 19:26:02,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=658, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2024-11-16 19:26:02,628 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-11-16 19:26:02,628 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 658 flow [2024-11-16 19:26:02,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:02,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:02,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:02,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 19:26:02,630 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:02,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -537269807, now seen corresponding path program 2 times [2024-11-16 19:26:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:02,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801434076] [2024-11-16 19:26:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:02,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801434076] [2024-11-16 19:26:02,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801434076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:02,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:02,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:02,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312961395] [2024-11-16 19:26:02,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:02,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:02,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:02,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:02,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:02,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 658 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:02,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:02,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:02,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:03,865 INFO L124 PetriNetUnfolderBase]: 9891/14965 cut-off events. [2024-11-16 19:26:03,865 INFO L125 PetriNetUnfolderBase]: For 29238/29272 co-relation queries the response was YES. [2024-11-16 19:26:03,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41846 conditions, 14965 events. 9891/14965 cut-off events. For 29238/29272 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 98865 event pairs, 1658 based on Foata normal form. 112/14967 useless extension candidates. Maximal degree in co-relation 41821. Up to 9054 conditions per place. [2024-11-16 19:26:04,060 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 103 selfloop transitions, 13 changer transitions 0/130 dead transitions. [2024-11-16 19:26:04,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 130 transitions, 1012 flow [2024-11-16 19:26:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:26:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:26:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-16 19:26:04,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-11-16 19:26:04,061 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 658 flow. Second operand 4 states and 146 transitions. [2024-11-16 19:26:04,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 130 transitions, 1012 flow [2024-11-16 19:26:04,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 130 transitions, 969 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-16 19:26:04,167 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 675 flow [2024-11-16 19:26:04,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=675, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-11-16 19:26:04,168 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-11-16 19:26:04,168 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 675 flow [2024-11-16 19:26:04,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:04,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:04,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:04,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 19:26:04,168 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:04,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:04,169 INFO L85 PathProgramCache]: Analyzing trace with hash -272754474, now seen corresponding path program 4 times [2024-11-16 19:26:04,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:04,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594811944] [2024-11-16 19:26:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:04,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:04,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:04,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594811944] [2024-11-16 19:26:04,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594811944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:04,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:04,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:04,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418382183] [2024-11-16 19:26:04,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:04,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:04,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:04,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:04,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 675 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:04,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:04,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:04,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:05,116 INFO L124 PetriNetUnfolderBase]: 10131/15285 cut-off events. [2024-11-16 19:26:05,116 INFO L125 PetriNetUnfolderBase]: For 26610/26658 co-relation queries the response was YES. [2024-11-16 19:26:05,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43433 conditions, 15285 events. 10131/15285 cut-off events. For 26610/26658 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 101465 event pairs, 2144 based on Foata normal form. 112/15257 useless extension candidates. Maximal degree in co-relation 43409. Up to 10956 conditions per place. [2024-11-16 19:26:05,189 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 94 selfloop transitions, 10 changer transitions 13/131 dead transitions. [2024-11-16 19:26:05,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 1053 flow [2024-11-16 19:26:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:26:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:26:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-16 19:26:05,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-11-16 19:26:05,190 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 675 flow. Second operand 4 states and 146 transitions. [2024-11-16 19:26:05,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 1053 flow [2024-11-16 19:26:05,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 131 transitions, 1041 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-16 19:26:05,288 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 605 flow [2024-11-16 19:26:05,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=605, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2024-11-16 19:26:05,288 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-11-16 19:26:05,288 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 605 flow [2024-11-16 19:26:05,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:05,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:05,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:05,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 19:26:05,289 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:05,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:05,289 INFO L85 PathProgramCache]: Analyzing trace with hash 584553921, now seen corresponding path program 3 times [2024-11-16 19:26:05,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:05,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132927133] [2024-11-16 19:26:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132927133] [2024-11-16 19:26:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132927133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:05,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:05,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:05,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154127003] [2024-11-16 19:26:05,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:05,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:05,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:05,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:05,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 605 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:05,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:05,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:05,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:06,117 INFO L124 PetriNetUnfolderBase]: 8565/12761 cut-off events. [2024-11-16 19:26:06,117 INFO L125 PetriNetUnfolderBase]: For 22286/22286 co-relation queries the response was YES. [2024-11-16 19:26:06,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36628 conditions, 12761 events. 8565/12761 cut-off events. For 22286/22286 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 80610 event pairs, 3892 based on Foata normal form. 90/12679 useless extension candidates. Maximal degree in co-relation 36603. Up to 8238 conditions per place. [2024-11-16 19:26:06,176 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 109 selfloop transitions, 10 changer transitions 7/140 dead transitions. [2024-11-16 19:26:06,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 140 transitions, 1003 flow [2024-11-16 19:26:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:26:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:26:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-11-16 19:26:06,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.559375 [2024-11-16 19:26:06,177 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 605 flow. Second operand 5 states and 179 transitions. [2024-11-16 19:26:06,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 140 transitions, 1003 flow [2024-11-16 19:26:06,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 140 transitions, 951 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-16 19:26:06,252 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 524 flow [2024-11-16 19:26:06,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-11-16 19:26:06,253 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-11-16 19:26:06,253 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 524 flow [2024-11-16 19:26:06,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:06,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:06,253 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:06,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 19:26:06,254 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:06,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash 164635411, now seen corresponding path program 4 times [2024-11-16 19:26:06,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:06,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737447458] [2024-11-16 19:26:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:06,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:06,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737447458] [2024-11-16 19:26:06,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737447458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:06,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:06,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498953295] [2024-11-16 19:26:06,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:06,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:06,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:06,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:06,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:06,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:06,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:07,076 INFO L124 PetriNetUnfolderBase]: 7609/11253 cut-off events. [2024-11-16 19:26:07,076 INFO L125 PetriNetUnfolderBase]: For 16368/16368 co-relation queries the response was YES. [2024-11-16 19:26:07,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31836 conditions, 11253 events. 7609/11253 cut-off events. For 16368/16368 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 68992 event pairs, 4204 based on Foata normal form. 32/11137 useless extension candidates. Maximal degree in co-relation 31815. Up to 9286 conditions per place. [2024-11-16 19:26:07,128 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 76 selfloop transitions, 4 changer transitions 15/109 dead transitions. [2024-11-16 19:26:07,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 751 flow [2024-11-16 19:26:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:26:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:26:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-16 19:26:07,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-11-16 19:26:07,130 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 524 flow. Second operand 4 states and 134 transitions. [2024-11-16 19:26:07,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 751 flow [2024-11-16 19:26:07,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 720 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-16 19:26:07,166 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 427 flow [2024-11-16 19:26:07,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-11-16 19:26:07,167 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-11-16 19:26:07,167 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 427 flow [2024-11-16 19:26:07,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:07,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:07,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:07,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 19:26:07,168 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:07,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1425592319, now seen corresponding path program 5 times [2024-11-16 19:26:07,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:07,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106117109] [2024-11-16 19:26:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:07,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:07,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:07,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106117109] [2024-11-16 19:26:07,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106117109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:07,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:07,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:07,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720337167] [2024-11-16 19:26:07,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:07,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:07,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:07,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:07,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:07,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:07,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:07,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:07,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:07,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:07,762 INFO L124 PetriNetUnfolderBase]: 6767/10109 cut-off events. [2024-11-16 19:26:07,762 INFO L125 PetriNetUnfolderBase]: For 11509/11509 co-relation queries the response was YES. [2024-11-16 19:26:07,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27548 conditions, 10109 events. 6767/10109 cut-off events. For 11509/11509 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 61264 event pairs, 1168 based on Foata normal form. 110/10111 useless extension candidates. Maximal degree in co-relation 27530. Up to 7648 conditions per place. [2024-11-16 19:26:07,803 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 81 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2024-11-16 19:26:07,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 103 transitions, 604 flow [2024-11-16 19:26:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:26:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:26:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-16 19:26:07,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-16 19:26:07,804 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 427 flow. Second operand 4 states and 136 transitions. [2024-11-16 19:26:07,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 103 transitions, 604 flow [2024-11-16 19:26:07,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 103 transitions, 585 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-16 19:26:07,833 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 342 flow [2024-11-16 19:26:07,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-11-16 19:26:07,833 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-16 19:26:07,833 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 342 flow [2024-11-16 19:26:07,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:07,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:07,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:07,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 19:26:07,834 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:07,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1672863536, now seen corresponding path program 5 times [2024-11-16 19:26:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:07,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51066383] [2024-11-16 19:26:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:07,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:07,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:07,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51066383] [2024-11-16 19:26:07,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51066383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:07,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:07,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:07,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471581709] [2024-11-16 19:26:07,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:07,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:07,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:07,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:07,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:07,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:07,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:07,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:07,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:07,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:08,376 INFO L124 PetriNetUnfolderBase]: 6225/9179 cut-off events. [2024-11-16 19:26:08,376 INFO L125 PetriNetUnfolderBase]: For 7570/7570 co-relation queries the response was YES. [2024-11-16 19:26:08,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24805 conditions, 9179 events. 6225/9179 cut-off events. For 7570/7570 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 53805 event pairs, 3680 based on Foata normal form. 32/9071 useless extension candidates. Maximal degree in co-relation 24790. Up to 8238 conditions per place. [2024-11-16 19:26:08,411 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 56 selfloop transitions, 0 changer transitions 14/84 dead transitions. [2024-11-16 19:26:08,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 496 flow [2024-11-16 19:26:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:26:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:26:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-16 19:26:08,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45703125 [2024-11-16 19:26:08,412 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 342 flow. Second operand 4 states and 117 transitions. [2024-11-16 19:26:08,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 496 flow [2024-11-16 19:26:08,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 476 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:08,427 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 288 flow [2024-11-16 19:26:08,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-11-16 19:26:08,428 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-16 19:26:08,428 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 288 flow [2024-11-16 19:26:08,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2024-11-16 19:26:08,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:08,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:08,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 19:26:08,428 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:08,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:08,429 INFO L85 PathProgramCache]: Analyzing trace with hash -842638250, now seen corresponding path program 1 times [2024-11-16 19:26:08,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:08,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187046753] [2024-11-16 19:26:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:08,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:08,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187046753] [2024-11-16 19:26:08,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187046753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:08,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:08,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 19:26:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444677380] [2024-11-16 19:26:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:08,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:08,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:08,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:26:09,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:26:09,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 12 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:09,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:09,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:26:09,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:10,729 INFO L124 PetriNetUnfolderBase]: 15007/21604 cut-off events. [2024-11-16 19:26:10,729 INFO L125 PetriNetUnfolderBase]: For 12532/12649 co-relation queries the response was YES. [2024-11-16 19:26:10,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57554 conditions, 21604 events. 15007/21604 cut-off events. For 12532/12649 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 137738 event pairs, 2394 based on Foata normal form. 115/21589 useless extension candidates. Maximal degree in co-relation 57540. Up to 3850 conditions per place. [2024-11-16 19:26:10,852 INFO L140 encePairwiseOnDemand]: 47/64 looper letters, 411 selfloop transitions, 41 changer transitions 15/477 dead transitions. [2024-11-16 19:26:10,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 477 transitions, 3018 flow [2024-11-16 19:26:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 19:26:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-16 19:26:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 633 transitions. [2024-11-16 19:26:10,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47098214285714285 [2024-11-16 19:26:10,854 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 288 flow. Second operand 21 states and 633 transitions. [2024-11-16 19:26:10,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 477 transitions, 3018 flow [2024-11-16 19:26:10,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 477 transitions, 2994 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-16 19:26:10,908 INFO L231 Difference]: Finished difference. Result has 108 places, 103 transitions, 558 flow [2024-11-16 19:26:10,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=558, PETRI_PLACES=108, PETRI_TRANSITIONS=103} [2024-11-16 19:26:10,909 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2024-11-16 19:26:10,909 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 103 transitions, 558 flow [2024-11-16 19:26:10,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 12 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:10,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:10,910 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:10,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 19:26:10,910 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:10,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1975791164, now seen corresponding path program 2 times [2024-11-16 19:26:10,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:10,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429366480] [2024-11-16 19:26:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:10,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:11,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:11,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429366480] [2024-11-16 19:26:11,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429366480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:11,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:11,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 19:26:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276892767] [2024-11-16 19:26:11,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:11,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:26:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:26:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:26:11,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:26:11,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 103 transitions, 558 flow. Second operand has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:11,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:11,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:26:11,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:13,144 INFO L124 PetriNetUnfolderBase]: 15382/22237 cut-off events. [2024-11-16 19:26:13,144 INFO L125 PetriNetUnfolderBase]: For 23986/24157 co-relation queries the response was YES. [2024-11-16 19:26:13,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66651 conditions, 22237 events. 15382/22237 cut-off events. For 23986/24157 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 144289 event pairs, 2945 based on Foata normal form. 137/22206 useless extension candidates. Maximal degree in co-relation 66626. Up to 8212 conditions per place. [2024-11-16 19:26:13,305 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 278 selfloop transitions, 41 changer transitions 4/333 dead transitions. [2024-11-16 19:26:13,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 333 transitions, 2343 flow [2024-11-16 19:26:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:26:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:26:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 445 transitions. [2024-11-16 19:26:13,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4345703125 [2024-11-16 19:26:13,307 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 558 flow. Second operand 16 states and 445 transitions. [2024-11-16 19:26:13,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 333 transitions, 2343 flow [2024-11-16 19:26:13,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 333 transitions, 2302 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-16 19:26:13,514 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 690 flow [2024-11-16 19:26:13,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=690, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-11-16 19:26:13,514 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 69 predicate places. [2024-11-16 19:26:13,514 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 690 flow [2024-11-16 19:26:13,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:13,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:13,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:13,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 19:26:13,515 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:13,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1362923068, now seen corresponding path program 1 times [2024-11-16 19:26:13,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:13,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438609887] [2024-11-16 19:26:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:13,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438609887] [2024-11-16 19:26:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438609887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:13,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:26:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64952084] [2024-11-16 19:26:13,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:13,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:26:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:26:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:26:13,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:26:13,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 690 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:13,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:13,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:26:13,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:15,074 INFO L124 PetriNetUnfolderBase]: 14112/21484 cut-off events. [2024-11-16 19:26:15,074 INFO L125 PetriNetUnfolderBase]: For 30457/30503 co-relation queries the response was YES. [2024-11-16 19:26:15,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67671 conditions, 21484 events. 14112/21484 cut-off events. For 30457/30503 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 151189 event pairs, 7978 based on Foata normal form. 533/21756 useless extension candidates. Maximal degree in co-relation 67643. Up to 9270 conditions per place. [2024-11-16 19:26:15,176 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 147 selfloop transitions, 21 changer transitions 5/183 dead transitions. [2024-11-16 19:26:15,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 183 transitions, 1389 flow [2024-11-16 19:26:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:26:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:26:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-11-16 19:26:15,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-11-16 19:26:15,178 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 690 flow. Second operand 6 states and 174 transitions. [2024-11-16 19:26:15,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 183 transitions, 1389 flow [2024-11-16 19:26:15,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 183 transitions, 1333 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-16 19:26:15,391 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 713 flow [2024-11-16 19:26:15,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2024-11-16 19:26:15,391 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 68 predicate places. [2024-11-16 19:26:15,391 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 713 flow [2024-11-16 19:26:15,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:15,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:15,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:15,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-16 19:26:15,392 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:15,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1711771799, now seen corresponding path program 1 times [2024-11-16 19:26:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:15,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260388957] [2024-11-16 19:26:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:15,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:15,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260388957] [2024-11-16 19:26:15,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260388957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:15,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:15,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:15,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566348117] [2024-11-16 19:26:15,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:15,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:26:15,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:26:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:26:15,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:26:15,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 713 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:15,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:15,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:26:15,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:16,520 INFO L124 PetriNetUnfolderBase]: 9753/15168 cut-off events. [2024-11-16 19:26:16,521 INFO L125 PetriNetUnfolderBase]: For 24644/24644 co-relation queries the response was YES. [2024-11-16 19:26:16,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49850 conditions, 15168 events. 9753/15168 cut-off events. For 24644/24644 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 104306 event pairs, 5637 based on Foata normal form. 464/15430 useless extension candidates. Maximal degree in co-relation 49817. Up to 7160 conditions per place. [2024-11-16 19:26:16,632 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 147 selfloop transitions, 13 changer transitions 13/183 dead transitions. [2024-11-16 19:26:16,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 183 transitions, 1506 flow [2024-11-16 19:26:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:26:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:26:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-11-16 19:26:16,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4557291666666667 [2024-11-16 19:26:16,633 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 713 flow. Second operand 6 states and 175 transitions. [2024-11-16 19:26:16,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 183 transitions, 1506 flow [2024-11-16 19:26:16,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 183 transitions, 1470 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:16,788 INFO L231 Difference]: Finished difference. Result has 124 places, 97 transitions, 643 flow [2024-11-16 19:26:16,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=124, PETRI_TRANSITIONS=97} [2024-11-16 19:26:16,788 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 72 predicate places. [2024-11-16 19:26:16,789 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 97 transitions, 643 flow [2024-11-16 19:26:16,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:16,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:16,789 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:16,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-16 19:26:16,789 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:16,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash 713619460, now seen corresponding path program 1 times [2024-11-16 19:26:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:16,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475421227] [2024-11-16 19:26:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:16,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:16,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475421227] [2024-11-16 19:26:16,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475421227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143642640] [2024-11-16 19:26:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:16,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:16,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:16,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:16,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:26:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:17,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 19:26:17,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:17,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:19,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143642640] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:19,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:19,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 12] total 26 [2024-11-16 19:26:19,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495949893] [2024-11-16 19:26:19,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:19,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:26:19,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:26:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-11-16 19:26:19,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:19,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 97 transitions, 643 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:19,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:19,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:19,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:23,303 INFO L124 PetriNetUnfolderBase]: 16628/25941 cut-off events. [2024-11-16 19:26:23,303 INFO L125 PetriNetUnfolderBase]: For 49565/49645 co-relation queries the response was YES. [2024-11-16 19:26:23,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86606 conditions, 25941 events. 16628/25941 cut-off events. For 49565/49645 co-relation queries the response was YES. Maximal size of possible extension queue 1354. Compared 192594 event pairs, 994 based on Foata normal form. 44/25865 useless extension candidates. Maximal degree in co-relation 86572. Up to 4523 conditions per place. [2024-11-16 19:26:23,594 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 407 selfloop transitions, 68 changer transitions 19/510 dead transitions. [2024-11-16 19:26:23,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 510 transitions, 4424 flow [2024-11-16 19:26:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 19:26:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-16 19:26:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 516 transitions. [2024-11-16 19:26:23,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-16 19:26:23,596 INFO L175 Difference]: Start difference. First operand has 124 places, 97 transitions, 643 flow. Second operand 15 states and 516 transitions. [2024-11-16 19:26:23,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 510 transitions, 4424 flow [2024-11-16 19:26:24,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 510 transitions, 4273 flow, removed 72 selfloop flow, removed 11 redundant places. [2024-11-16 19:26:24,143 INFO L231 Difference]: Finished difference. Result has 130 places, 171 transitions, 1431 flow [2024-11-16 19:26:24,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1431, PETRI_PLACES=130, PETRI_TRANSITIONS=171} [2024-11-16 19:26:24,143 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 78 predicate places. [2024-11-16 19:26:24,143 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 171 transitions, 1431 flow [2024-11-16 19:26:24,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:24,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:24,144 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:24,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:24,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-16 19:26:24,345 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:24,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:24,345 INFO L85 PathProgramCache]: Analyzing trace with hash 47147694, now seen corresponding path program 2 times [2024-11-16 19:26:24,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:24,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664967514] [2024-11-16 19:26:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:24,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:24,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:24,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664967514] [2024-11-16 19:26:24,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664967514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:24,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39602410] [2024-11-16 19:26:24,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:24,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:24,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:24,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:24,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:26:24,604 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:26:24,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:24,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 19:26:24,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:25,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:25,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39602410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:25,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:25,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 19 [2024-11-16 19:26:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075571337] [2024-11-16 19:26:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:25,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:25,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:26:25,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:26:25,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 171 transitions, 1431 flow. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:25,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:25,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:26:25,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:27,802 INFO L124 PetriNetUnfolderBase]: 19730/30440 cut-off events. [2024-11-16 19:26:27,802 INFO L125 PetriNetUnfolderBase]: For 101595/102069 co-relation queries the response was YES. [2024-11-16 19:26:28,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117306 conditions, 30440 events. 19730/30440 cut-off events. For 101595/102069 co-relation queries the response was YES. Maximal size of possible extension queue 1626. Compared 226494 event pairs, 2397 based on Foata normal form. 315/30564 useless extension candidates. Maximal degree in co-relation 117268. Up to 17245 conditions per place. [2024-11-16 19:26:28,118 INFO L140 encePairwiseOnDemand]: 46/64 looper letters, 335 selfloop transitions, 151 changer transitions 16/512 dead transitions. [2024-11-16 19:26:28,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 512 transitions, 4955 flow [2024-11-16 19:26:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 19:26:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-16 19:26:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 519 transitions. [2024-11-16 19:26:28,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40546875 [2024-11-16 19:26:28,119 INFO L175 Difference]: Start difference. First operand has 130 places, 171 transitions, 1431 flow. Second operand 20 states and 519 transitions. [2024-11-16 19:26:28,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 512 transitions, 4955 flow [2024-11-16 19:26:28,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 512 transitions, 4906 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:28,769 INFO L231 Difference]: Finished difference. Result has 158 places, 260 transitions, 2626 flow [2024-11-16 19:26:28,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2626, PETRI_PLACES=158, PETRI_TRANSITIONS=260} [2024-11-16 19:26:28,769 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-11-16 19:26:28,770 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 260 transitions, 2626 flow [2024-11-16 19:26:28,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:28,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:28,770 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:28,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:28,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:28,971 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:28,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1037841956, now seen corresponding path program 3 times [2024-11-16 19:26:28,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:28,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801711263] [2024-11-16 19:26:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:28,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:29,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:29,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801711263] [2024-11-16 19:26:29,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801711263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:29,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049847373] [2024-11-16 19:26:29,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:29,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:29,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:29,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:29,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:26:29,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:26:29,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:29,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 19:26:29,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:29,724 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049847373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:29,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:29,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 19 [2024-11-16 19:26:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513077599] [2024-11-16 19:26:29,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:29,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:29,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:26:29,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:26:29,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 260 transitions, 2626 flow. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:29,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:29,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:26:29,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:33,254 INFO L124 PetriNetUnfolderBase]: 20585/31717 cut-off events. [2024-11-16 19:26:33,255 INFO L125 PetriNetUnfolderBase]: For 139889/140559 co-relation queries the response was YES. [2024-11-16 19:26:33,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133299 conditions, 31717 events. 20585/31717 cut-off events. For 139889/140559 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 236464 event pairs, 2618 based on Foata normal form. 407/31902 useless extension candidates. Maximal degree in co-relation 133250. Up to 17258 conditions per place. [2024-11-16 19:26:33,579 INFO L140 encePairwiseOnDemand]: 46/64 looper letters, 363 selfloop transitions, 173 changer transitions 26/572 dead transitions. [2024-11-16 19:26:33,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 572 transitions, 6101 flow [2024-11-16 19:26:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:26:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:26:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 586 transitions. [2024-11-16 19:26:33,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4161931818181818 [2024-11-16 19:26:33,581 INFO L175 Difference]: Start difference. First operand has 158 places, 260 transitions, 2626 flow. Second operand 22 states and 586 transitions. [2024-11-16 19:26:33,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 572 transitions, 6101 flow [2024-11-16 19:26:34,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 572 transitions, 5918 flow, removed 86 selfloop flow, removed 3 redundant places. [2024-11-16 19:26:34,898 INFO L231 Difference]: Finished difference. Result has 181 places, 289 transitions, 3209 flow [2024-11-16 19:26:34,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3209, PETRI_PLACES=181, PETRI_TRANSITIONS=289} [2024-11-16 19:26:34,899 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 129 predicate places. [2024-11-16 19:26:34,899 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 289 transitions, 3209 flow [2024-11-16 19:26:34,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:34,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:34,899 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:34,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:26:35,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-16 19:26:35,101 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:35,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2007528798, now seen corresponding path program 4 times [2024-11-16 19:26:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:35,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080221837] [2024-11-16 19:26:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:35,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:35,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:35,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080221837] [2024-11-16 19:26:35,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080221837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714303398] [2024-11-16 19:26:35,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:35,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:35,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:35,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:26:35,391 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:35,391 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:35,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 19:26:35,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:35,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:37,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714303398] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:37,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:37,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 11] total 25 [2024-11-16 19:26:37,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044888367] [2024-11-16 19:26:37,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:37,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:26:37,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:37,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:26:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:26:37,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:37,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 289 transitions, 3209 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:37,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:37,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:37,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:44,625 INFO L124 PetriNetUnfolderBase]: 33324/51038 cut-off events. [2024-11-16 19:26:44,625 INFO L125 PetriNetUnfolderBase]: For 232386/233262 co-relation queries the response was YES. [2024-11-16 19:26:44,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215201 conditions, 51038 events. 33324/51038 cut-off events. For 232386/233262 co-relation queries the response was YES. Maximal size of possible extension queue 2872. Compared 404868 event pairs, 3465 based on Foata normal form. 435/51241 useless extension candidates. Maximal degree in co-relation 215146. Up to 20075 conditions per place. [2024-11-16 19:26:45,311 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 534 selfloop transitions, 300 changer transitions 15/866 dead transitions. [2024-11-16 19:26:45,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 866 transitions, 10723 flow [2024-11-16 19:26:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:26:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:26:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 537 transitions. [2024-11-16 19:26:45,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5244140625 [2024-11-16 19:26:45,314 INFO L175 Difference]: Start difference. First operand has 181 places, 289 transitions, 3209 flow. Second operand 16 states and 537 transitions. [2024-11-16 19:26:45,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 866 transitions, 10723 flow [2024-11-16 19:26:47,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 866 transitions, 10103 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-11-16 19:26:47,109 INFO L231 Difference]: Finished difference. Result has 196 places, 459 transitions, 6017 flow [2024-11-16 19:26:47,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6017, PETRI_PLACES=196, PETRI_TRANSITIONS=459} [2024-11-16 19:26:47,109 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-11-16 19:26:47,110 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 459 transitions, 6017 flow [2024-11-16 19:26:47,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:47,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:47,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:47,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:47,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 19:26:47,311 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:47,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2007511860, now seen corresponding path program 5 times [2024-11-16 19:26:47,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:47,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697935765] [2024-11-16 19:26:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:47,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697935765] [2024-11-16 19:26:47,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697935765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187711455] [2024-11-16 19:26:47,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:47,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:47,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:47,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:47,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:26:47,581 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:47,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:47,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 19:26:47,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:48,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187711455] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:49,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:49,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 12] total 26 [2024-11-16 19:26:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257319065] [2024-11-16 19:26:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:49,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:26:49,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:26:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2024-11-16 19:26:49,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-11-16 19:26:49,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 459 transitions, 6017 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:49,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:49,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-11-16 19:26:49,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand