./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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-symm.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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:28:45,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:28:45,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:28:45,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:28:45,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:28:45,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:28:45,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:28:45,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:28:45,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:28:45,895 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:28:45,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:28:45,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:28:45,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:28:45,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:28:45,899 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:28:45,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:28:45,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:28:45,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:28:45,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:28:45,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:28:45,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:28:45,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:28:45,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:28:45,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:28:45,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:28:45,903 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:28:45,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:28:45,904 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:28:45,904 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:28:45,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:28:45,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:28:45,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:28:45,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:28:45,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:28:45,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:28:45,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:28:45,905 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:28:45,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:28:45,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:28:45,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:28:45,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:28:45,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:28:45,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2024-11-10 10:28:46,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:28:46,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:28:46,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:28:46,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:28:46,123 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:28:46,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-10 10:28:47,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:28:47,731 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:28:47,731 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-10 10:28:47,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3dbe1b05/911863c97c934315885dd17a77c6b667/FLAGe941bc086 [2024-11-10 10:28:48,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3dbe1b05/911863c97c934315885dd17a77c6b667 [2024-11-10 10:28:48,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:28:48,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:28:48,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:28:48,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:28:48,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:28:48,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590e9ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48, skipping insertion in model container [2024-11-10 10:28:48,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:28:48,372 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-symm.wvr.c[2874,2887] [2024-11-10 10:28:48,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:28:48,388 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:28:48,410 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-symm.wvr.c[2874,2887] [2024-11-10 10:28:48,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:28:48,435 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:28:48,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48 WrapperNode [2024-11-10 10:28:48,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:28:48,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:28:48,437 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:28:48,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:28:48,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,470 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 121 [2024-11-10 10:28:48,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:28:48,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:28:48,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:28:48,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:28:48,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,504 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 10:28:48,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,511 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:28:48,517 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:28:48,517 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:28:48,517 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:28:48,518 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (1/1) ... [2024-11-10 10:28:48,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:28:48,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:48,562 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) [2024-11-10 10:28:48,566 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 [2024-11-10 10:28:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:28:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:28:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:28:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:28:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:28:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:28:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:28:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:28:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:28:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:28:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:28:48,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:28:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:28:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:28:48,614 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:28:48,722 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:28:48,725 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:28:48,965 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:28:48,966 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:28:49,230 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:28:49,230 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:28:49,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:49 BoogieIcfgContainer [2024-11-10 10:28:49,230 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:28:49,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:28:49,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:28:49,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:28:49,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:28:48" (1/3) ... [2024-11-10 10:28:49,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1105e38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:49, skipping insertion in model container [2024-11-10 10:28:49,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:48" (2/3) ... [2024-11-10 10:28:49,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1105e38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:49, skipping insertion in model container [2024-11-10 10:28:49,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:49" (3/3) ... [2024-11-10 10:28:49,238 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-11-10 10:28:49,252 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:28:49,252 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:28:49,253 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:28:49,307 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:28:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 44 transitions, 102 flow [2024-11-10 10:28:49,364 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2024-11-10 10:28:49,364 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:28:49,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 12/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-11-10 10:28:49,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 44 transitions, 102 flow [2024-11-10 10:28:49,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 41 transitions, 94 flow [2024-11-10 10:28:49,380 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:28:49,385 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;@3c7d2944, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:28:49,388 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 10:28:49,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:28:49,403 INFO L124 PetriNetUnfolderBase]: 12/40 cut-off events. [2024-11-10 10:28:49,407 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:28:49,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:49,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:49,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:49,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash -421615674, now seen corresponding path program 1 times [2024-11-10 10:28:49,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:49,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144763202] [2024-11-10 10:28:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:49,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:49,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144763202] [2024-11-10 10:28:49,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144763202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:49,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:49,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:28:49,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470077589] [2024-11-10 10:28:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:49,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:28:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:28:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:28:49,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:28:49,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:49,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:49,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:28:49,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:49,745 INFO L124 PetriNetUnfolderBase]: 206/350 cut-off events. [2024-11-10 10:28:49,745 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-10 10:28:49,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 350 events. 206/350 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1178 event pairs, 115 based on Foata normal form. 31/313 useless extension candidates. Maximal degree in co-relation 626. Up to 316 conditions per place. [2024-11-10 10:28:49,750 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-11-10 10:28:49,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 142 flow [2024-11-10 10:28:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:28:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:28:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-10 10:28:49,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-10 10:28:49,763 INFO L175 Difference]: Start difference. First operand has 36 places, 41 transitions, 94 flow. Second operand 2 states and 54 transitions. [2024-11-10 10:28:49,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 142 flow [2024-11-10 10:28:49,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:28:49,768 INFO L231 Difference]: Finished difference. Result has 33 places, 37 transitions, 78 flow [2024-11-10 10:28:49,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=37} [2024-11-10 10:28:49,772 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-11-10 10:28:49,772 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 37 transitions, 78 flow [2024-11-10 10:28:49,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:49,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:49,774 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] [2024-11-10 10:28:49,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:28:49,774 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:49,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1018746788, now seen corresponding path program 1 times [2024-11-10 10:28:49,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:49,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678741486] [2024-11-10 10:28:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:50,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678741486] [2024-11-10 10:28:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678741486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:50,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:28:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959072520] [2024-11-10 10:28:50,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:50,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:28:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:28:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:28:50,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:28:50,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 37 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:50,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:50,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:28:50,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:50,308 INFO L124 PetriNetUnfolderBase]: 255/450 cut-off events. [2024-11-10 10:28:50,308 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:28:50,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 450 events. 255/450 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1791 event pairs, 120 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 877. Up to 306 conditions per place. [2024-11-10 10:28:50,313 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 37 selfloop transitions, 1 changer transitions 9/56 dead transitions. [2024-11-10 10:28:50,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 56 transitions, 215 flow [2024-11-10 10:28:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:28:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:28:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-10 10:28:50,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5284090909090909 [2024-11-10 10:28:50,316 INFO L175 Difference]: Start difference. First operand has 33 places, 37 transitions, 78 flow. Second operand 4 states and 93 transitions. [2024-11-10 10:28:50,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 56 transitions, 215 flow [2024-11-10 10:28:50,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:28:50,321 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 87 flow [2024-11-10 10:28:50,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2024-11-10 10:28:50,322 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-11-10 10:28:50,323 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 87 flow [2024-11-10 10:28:50,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:50,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:50,324 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] [2024-11-10 10:28:50,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:28:50,324 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:50,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash 287964106, now seen corresponding path program 2 times [2024-11-10 10:28:50,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:50,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888697934] [2024-11-10 10:28:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:50,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:50,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:50,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888697934] [2024-11-10 10:28:50,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888697934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:50,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:50,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:28:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255545165] [2024-11-10 10:28:50,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:50,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:28:50,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:28:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:28:50,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:28:50,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:50,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:50,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:28:50,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:50,691 INFO L124 PetriNetUnfolderBase]: 281/511 cut-off events. [2024-11-10 10:28:50,692 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-10 10:28:50,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 511 events. 281/511 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2169 event pairs, 156 based on Foata normal form. 5/448 useless extension candidates. Maximal degree in co-relation 1045. Up to 379 conditions per place. [2024-11-10 10:28:50,697 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 37 selfloop transitions, 1 changer transitions 7/54 dead transitions. [2024-11-10 10:28:50,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 220 flow [2024-11-10 10:28:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:28:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:28:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-10 10:28:50,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2024-11-10 10:28:50,700 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 87 flow. Second operand 4 states and 91 transitions. [2024-11-10 10:28:50,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 220 flow [2024-11-10 10:28:50,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 214 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 10:28:50,704 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 93 flow [2024-11-10 10:28:50,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-10 10:28:50,705 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2024-11-10 10:28:50,706 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 93 flow [2024-11-10 10:28:50,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:50,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:50,707 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] [2024-11-10 10:28:50,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:28:50,707 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:50,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2062300160, now seen corresponding path program 1 times [2024-11-10 10:28:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756288243] [2024-11-10 10:28:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:50,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:50,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:50,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756288243] [2024-11-10 10:28:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756288243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:50,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:28:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966627841] [2024-11-10 10:28:50,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:50,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:28:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:50,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:28:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:28:50,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:28:50,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:50,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:50,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:28:50,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:50,836 INFO L124 PetriNetUnfolderBase]: 196/363 cut-off events. [2024-11-10 10:28:50,836 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-10 10:28:50,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 363 events. 196/363 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1346 event pairs, 63 based on Foata normal form. 17/345 useless extension candidates. Maximal degree in co-relation 746. Up to 259 conditions per place. [2024-11-10 10:28:50,838 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 31 selfloop transitions, 2 changer transitions 5/47 dead transitions. [2024-11-10 10:28:50,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 195 flow [2024-11-10 10:28:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:28:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:28:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-10 10:28:50,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-11-10 10:28:50,840 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 93 flow. Second operand 3 states and 73 transitions. [2024-11-10 10:28:50,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 195 flow [2024-11-10 10:28:50,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 192 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 10:28:50,841 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 96 flow [2024-11-10 10:28:50,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-10 10:28:50,842 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2024-11-10 10:28:50,842 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 96 flow [2024-11-10 10:28:50,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:50,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:50,843 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] [2024-11-10 10:28:50,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:28:50,843 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:50,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash -186520966, now seen corresponding path program 1 times [2024-11-10 10:28:50,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:50,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220540986] [2024-11-10 10:28:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:50,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:51,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:51,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220540986] [2024-11-10 10:28:51,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220540986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:51,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:51,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:28:51,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642651597] [2024-11-10 10:28:51,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:51,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:28:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:28:51,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:28:51,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:28:51,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 96 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:51,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:51,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:28:51,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:51,441 INFO L124 PetriNetUnfolderBase]: 540/953 cut-off events. [2024-11-10 10:28:51,441 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-10 10:28:51,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 953 events. 540/953 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4480 event pairs, 85 based on Foata normal form. 1/853 useless extension candidates. Maximal degree in co-relation 2049. Up to 277 conditions per place. [2024-11-10 10:28:51,446 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 102 selfloop transitions, 22 changer transitions 1/132 dead transitions. [2024-11-10 10:28:51,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 132 transitions, 603 flow [2024-11-10 10:28:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:28:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:28:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-11-10 10:28:51,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-10 10:28:51,448 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 96 flow. Second operand 12 states and 228 transitions. [2024-11-10 10:28:51,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 132 transitions, 603 flow [2024-11-10 10:28:51,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 132 transitions, 569 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-10 10:28:51,452 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 234 flow [2024-11-10 10:28:51,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=234, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-11-10 10:28:51,453 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-11-10 10:28:51,453 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 234 flow [2024-11-10 10:28:51,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:51,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:51,454 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] [2024-11-10 10:28:51,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:28:51,454 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:51,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1839541326, now seen corresponding path program 1 times [2024-11-10 10:28:51,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:51,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621400910] [2024-11-10 10:28:51,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:51,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:51,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:51,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621400910] [2024-11-10 10:28:51,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621400910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:51,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:51,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:28:51,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961369073] [2024-11-10 10:28:51,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:51,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:51,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:51,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:51,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:51,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:28:51,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:51,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:51,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:28:51,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:51,760 INFO L124 PetriNetUnfolderBase]: 426/830 cut-off events. [2024-11-10 10:28:51,761 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2024-11-10 10:28:51,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 830 events. 426/830 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4134 event pairs, 241 based on Foata normal form. 28/842 useless extension candidates. Maximal degree in co-relation 2152. Up to 332 conditions per place. [2024-11-10 10:28:51,766 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 73 selfloop transitions, 8 changer transitions 0/88 dead transitions. [2024-11-10 10:28:51,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 499 flow [2024-11-10 10:28:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:28:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:28:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-10 10:28:51,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-10 10:28:51,768 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 234 flow. Second operand 6 states and 116 transitions. [2024-11-10 10:28:51,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 499 flow [2024-11-10 10:28:51,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 499 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:28:51,771 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 267 flow [2024-11-10 10:28:51,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-10 10:28:51,772 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-10 10:28:51,772 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 267 flow [2024-11-10 10:28:51,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:51,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:51,772 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] [2024-11-10 10:28:51,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:28:51,773 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:51,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash -646107847, now seen corresponding path program 1 times [2024-11-10 10:28:51,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:51,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828570536] [2024-11-10 10:28:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828570536] [2024-11-10 10:28:51,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828570536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:51,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:51,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:28:51,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571024646] [2024-11-10 10:28:51,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:51,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:51,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:51,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:51,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:28:51,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:51,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:51,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:28:51,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:51,991 INFO L124 PetriNetUnfolderBase]: 333/681 cut-off events. [2024-11-10 10:28:51,992 INFO L125 PetriNetUnfolderBase]: For 674/674 co-relation queries the response was YES. [2024-11-10 10:28:51,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 681 events. 333/681 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3283 event pairs, 200 based on Foata normal form. 24/694 useless extension candidates. Maximal degree in co-relation 1901. Up to 319 conditions per place. [2024-11-10 10:28:51,995 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 59 selfloop transitions, 8 changer transitions 6/80 dead transitions. [2024-11-10 10:28:51,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 499 flow [2024-11-10 10:28:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:28:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:28:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-10 10:28:51,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-11-10 10:28:51,998 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 267 flow. Second operand 6 states and 111 transitions. [2024-11-10 10:28:51,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 499 flow [2024-11-10 10:28:52,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 492 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:28:52,003 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 264 flow [2024-11-10 10:28:52,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-11-10 10:28:52,005 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-11-10 10:28:52,005 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 264 flow [2024-11-10 10:28:52,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:52,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:52,006 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] [2024-11-10 10:28:52,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:28:52,006 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:52,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1413899600, now seen corresponding path program 1 times [2024-11-10 10:28:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419356255] [2024-11-10 10:28:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:52,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:52,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419356255] [2024-11-10 10:28:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419356255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748699277] [2024-11-10 10:28:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:52,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:52,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:52,276 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) [2024-11-10 10:28:52,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:28:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:52,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 10:28:52,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:28:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:52,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:28:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748699277] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:53,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:28:53,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-10 10:28:53,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18826126] [2024-11-10 10:28:53,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:53,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:28:53,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:53,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:28:53,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-10 10:28:53,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:28:53,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 264 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:53,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:53,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:28:53,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:53,698 INFO L124 PetriNetUnfolderBase]: 543/1023 cut-off events. [2024-11-10 10:28:53,700 INFO L125 PetriNetUnfolderBase]: For 1083/1091 co-relation queries the response was YES. [2024-11-10 10:28:53,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 1023 events. 543/1023 cut-off events. For 1083/1091 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5114 event pairs, 99 based on Foata normal form. 9/1022 useless extension candidates. Maximal degree in co-relation 2996. Up to 315 conditions per place. [2024-11-10 10:28:53,706 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 110 selfloop transitions, 24 changer transitions 6/147 dead transitions. [2024-11-10 10:28:53,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 147 transitions, 908 flow [2024-11-10 10:28:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:28:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:28:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-11-10 10:28:53,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-10 10:28:53,709 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 264 flow. Second operand 12 states and 231 transitions. [2024-11-10 10:28:53,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 147 transitions, 908 flow [2024-11-10 10:28:53,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 147 transitions, 877 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-10 10:28:53,717 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 404 flow [2024-11-10 10:28:53,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=404, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-11-10 10:28:53,718 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-11-10 10:28:53,719 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 404 flow [2024-11-10 10:28:53,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:53,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:53,719 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] [2024-11-10 10:28:53,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:28:53,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:53,922 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:53,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash -995110418, now seen corresponding path program 2 times [2024-11-10 10:28:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901919397] [2024-11-10 10:28:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:54,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901919397] [2024-11-10 10:28:54,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901919397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723882654] [2024-11-10 10:28:54,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:28:54,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:54,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:54,196 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) [2024-11-10 10:28:54,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:28:54,260 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:28:54,260 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:28:54,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:28:54,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:28:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:28:54,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:28:54,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723882654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:54,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:28:54,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-10 10:28:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596946384] [2024-11-10 10:28:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:54,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:28:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:28:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:28:54,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:28:54,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 404 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:54,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:54,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:28:54,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:54,909 INFO L124 PetriNetUnfolderBase]: 614/1131 cut-off events. [2024-11-10 10:28:54,909 INFO L125 PetriNetUnfolderBase]: For 2046/2070 co-relation queries the response was YES. [2024-11-10 10:28:54,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 1131 events. 614/1131 cut-off events. For 2046/2070 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5741 event pairs, 110 based on Foata normal form. 13/1131 useless extension candidates. Maximal degree in co-relation 3686. Up to 681 conditions per place. [2024-11-10 10:28:54,917 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 86 selfloop transitions, 28 changer transitions 6/127 dead transitions. [2024-11-10 10:28:54,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 127 transitions, 910 flow [2024-11-10 10:28:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:28:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:28:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-11-10 10:28:54,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-11-10 10:28:54,918 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 404 flow. Second operand 10 states and 184 transitions. [2024-11-10 10:28:54,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 127 transitions, 910 flow [2024-11-10 10:28:54,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 127 transitions, 897 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-10 10:28:54,927 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 540 flow [2024-11-10 10:28:54,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=540, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-11-10 10:28:54,928 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2024-11-10 10:28:54,928 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 540 flow [2024-11-10 10:28:54,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:54,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:54,928 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] [2024-11-10 10:28:54,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:28:55,129 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,SelfDestructingSolverStorable8 [2024-11-10 10:28:55,129 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:55,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1049058186, now seen corresponding path program 3 times [2024-11-10 10:28:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:55,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620710507] [2024-11-10 10:28:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:55,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:55,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620710507] [2024-11-10 10:28:55,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620710507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:55,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679764538] [2024-11-10 10:28:55,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:28:55,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:55,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:55,353 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) [2024-11-10 10:28:55,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:28:55,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:28:55,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:28:55,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:28:55,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:28:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:28:55,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:28:55,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679764538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:55,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:28:55,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-10 10:28:55,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013880236] [2024-11-10 10:28:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:55,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:28:55,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:28:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:28:55,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:28:55,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 540 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:55,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:55,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:28:55,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:56,045 INFO L124 PetriNetUnfolderBase]: 609/1132 cut-off events. [2024-11-10 10:28:56,045 INFO L125 PetriNetUnfolderBase]: For 2777/2805 co-relation queries the response was YES. [2024-11-10 10:28:56,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3972 conditions, 1132 events. 609/1132 cut-off events. For 2777/2805 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5795 event pairs, 100 based on Foata normal form. 21/1144 useless extension candidates. Maximal degree in co-relation 3945. Up to 676 conditions per place. [2024-11-10 10:28:56,053 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 89 selfloop transitions, 29 changer transitions 6/131 dead transitions. [2024-11-10 10:28:56,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 1014 flow [2024-11-10 10:28:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:28:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:28:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-11-10 10:28:56,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-11-10 10:28:56,055 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 540 flow. Second operand 10 states and 186 transitions. [2024-11-10 10:28:56,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 1014 flow [2024-11-10 10:28:56,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 131 transitions, 969 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-10 10:28:56,062 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 588 flow [2024-11-10 10:28:56,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=588, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-11-10 10:28:56,063 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2024-11-10 10:28:56,063 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 588 flow [2024-11-10 10:28:56,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:56,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:56,064 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] [2024-11-10 10:28:56,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:28:56,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:56,265 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:56,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:56,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1689182258, now seen corresponding path program 4 times [2024-11-10 10:28:56,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:56,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554040212] [2024-11-10 10:28:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:56,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:56,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:56,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554040212] [2024-11-10 10:28:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554040212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:56,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644688945] [2024-11-10 10:28:56,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:28:56,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:56,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:56,479 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) [2024-11-10 10:28:56,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:28:56,541 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:28:56,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:28:56,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 10:28:56,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:28:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:56,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:28:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644688945] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:57,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:28:57,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-10 10:28:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245008209] [2024-11-10 10:28:57,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:57,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:28:57,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:57,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:28:57,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2024-11-10 10:28:57,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:28:57,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 588 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:57,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:57,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:28:57,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:58,004 INFO L124 PetriNetUnfolderBase]: 624/1161 cut-off events. [2024-11-10 10:28:58,005 INFO L125 PetriNetUnfolderBase]: For 3279/3295 co-relation queries the response was YES. [2024-11-10 10:28:58,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 1161 events. 624/1161 cut-off events. For 3279/3295 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5999 event pairs, 95 based on Foata normal form. 17/1169 useless extension candidates. Maximal degree in co-relation 4130. Up to 315 conditions per place. [2024-11-10 10:28:58,011 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 121 selfloop transitions, 33 changer transitions 6/167 dead transitions. [2024-11-10 10:28:58,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 167 transitions, 1274 flow [2024-11-10 10:28:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:28:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:28:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 254 transitions. [2024-11-10 10:28:58,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44405594405594406 [2024-11-10 10:28:58,013 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 588 flow. Second operand 13 states and 254 transitions. [2024-11-10 10:28:58,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 167 transitions, 1274 flow [2024-11-10 10:28:58,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 167 transitions, 1208 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-10 10:28:58,021 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 604 flow [2024-11-10 10:28:58,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2024-11-10 10:28:58,022 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2024-11-10 10:28:58,022 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 604 flow [2024-11-10 10:28:58,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:58,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:58,022 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] [2024-11-10 10:28:58,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 10:28:58,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:58,227 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:58,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:58,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1903197614, now seen corresponding path program 5 times [2024-11-10 10:28:58,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534289170] [2024-11-10 10:28:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534289170] [2024-11-10 10:28:58,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534289170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424428691] [2024-11-10 10:28:58,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:28:58,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:58,570 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) [2024-11-10 10:28:58,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:28:58,633 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:28:58,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:28:58,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 10:28:58,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:28:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:58,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:28:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:59,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424428691] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:59,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:28:59,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-10 10:28:59,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122278860] [2024-11-10 10:28:59,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:59,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:28:59,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:59,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:28:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-10 10:28:59,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:28:59,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 604 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:59,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:59,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:28:59,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:00,379 INFO L124 PetriNetUnfolderBase]: 678/1279 cut-off events. [2024-11-10 10:29:00,380 INFO L125 PetriNetUnfolderBase]: For 3694/3720 co-relation queries the response was YES. [2024-11-10 10:29:00,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4530 conditions, 1279 events. 678/1279 cut-off events. For 3694/3720 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6837 event pairs, 103 based on Foata normal form. 15/1282 useless extension candidates. Maximal degree in co-relation 4500. Up to 315 conditions per place. [2024-11-10 10:29:00,396 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 125 selfloop transitions, 36 changer transitions 6/174 dead transitions. [2024-11-10 10:29:00,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1361 flow [2024-11-10 10:29:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:29:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:29:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 258 transitions. [2024-11-10 10:29:00,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45104895104895104 [2024-11-10 10:29:00,401 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 604 flow. Second operand 13 states and 258 transitions. [2024-11-10 10:29:00,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1361 flow [2024-11-10 10:29:00,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 174 transitions, 1302 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-11-10 10:29:00,424 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 701 flow [2024-11-10 10:29:00,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=701, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2024-11-10 10:29:00,429 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2024-11-10 10:29:00,429 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 701 flow [2024-11-10 10:29:00,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:00,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:00,429 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] [2024-11-10 10:29:00,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:29:00,630 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,SelfDestructingSolverStorable11 [2024-11-10 10:29:00,630 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:00,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash 990911858, now seen corresponding path program 6 times [2024-11-10 10:29:00,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100339010] [2024-11-10 10:29:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:00,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:00,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100339010] [2024-11-10 10:29:00,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100339010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322206536] [2024-11-10 10:29:00,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:00,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:00,952 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) [2024-11-10 10:29:00,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:29:01,017 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-10 10:29:01,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:01,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:29:01,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:29:01,272 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322206536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:01,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:01,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-10 10:29:01,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621927352] [2024-11-10 10:29:01,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:01,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:01,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:01,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:29:01,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:01,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:01,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:01,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:01,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:01,668 INFO L124 PetriNetUnfolderBase]: 669/1255 cut-off events. [2024-11-10 10:29:01,668 INFO L125 PetriNetUnfolderBase]: For 4299/4325 co-relation queries the response was YES. [2024-11-10 10:29:01,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 1255 events. 669/1255 cut-off events. For 4299/4325 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6634 event pairs, 124 based on Foata normal form. 11/1252 useless extension candidates. Maximal degree in co-relation 4627. Up to 735 conditions per place. [2024-11-10 10:29:01,676 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 86 selfloop transitions, 31 changer transitions 6/130 dead transitions. [2024-11-10 10:29:01,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 1131 flow [2024-11-10 10:29:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-11-10 10:29:01,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4068181818181818 [2024-11-10 10:29:01,678 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 701 flow. Second operand 10 states and 179 transitions. [2024-11-10 10:29:01,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 1131 flow [2024-11-10 10:29:01,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 130 transitions, 1089 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-10 10:29:01,698 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 727 flow [2024-11-10 10:29:01,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=727, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2024-11-10 10:29:01,699 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2024-11-10 10:29:01,700 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 727 flow [2024-11-10 10:29:01,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:01,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:01,700 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] [2024-11-10 10:29:01,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 10:29:01,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:01,901 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:01,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:01,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1239429187, now seen corresponding path program 1 times [2024-11-10 10:29:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670550742] [2024-11-10 10:29:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:02,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670550742] [2024-11-10 10:29:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670550742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:02,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589721641] [2024-11-10 10:29:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:02,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:02,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:02,090 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:02,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:29:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:02,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 10:29:02,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:02,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589721641] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:02,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-10 10:29:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512918305] [2024-11-10 10:29:02,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:02,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-10 10:29:02,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:02,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 727 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:02,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:02,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:02,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:03,662 INFO L124 PetriNetUnfolderBase]: 715/1381 cut-off events. [2024-11-10 10:29:03,662 INFO L125 PetriNetUnfolderBase]: For 4572/4592 co-relation queries the response was YES. [2024-11-10 10:29:03,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5164 conditions, 1381 events. 715/1381 cut-off events. For 4572/4592 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7755 event pairs, 143 based on Foata normal form. 9/1376 useless extension candidates. Maximal degree in co-relation 5130. Up to 738 conditions per place. [2024-11-10 10:29:03,671 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 105 selfloop transitions, 35 changer transitions 8/155 dead transitions. [2024-11-10 10:29:03,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 155 transitions, 1359 flow [2024-11-10 10:29:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:29:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:29:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-11-10 10:29:03,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3847402597402597 [2024-11-10 10:29:03,673 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 727 flow. Second operand 14 states and 237 transitions. [2024-11-10 10:29:03,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 155 transitions, 1359 flow [2024-11-10 10:29:03,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 155 transitions, 1287 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:03,686 INFO L231 Difference]: Finished difference. Result has 121 places, 94 transitions, 874 flow [2024-11-10 10:29:03,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=874, PETRI_PLACES=121, PETRI_TRANSITIONS=94} [2024-11-10 10:29:03,687 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 85 predicate places. [2024-11-10 10:29:03,687 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 94 transitions, 874 flow [2024-11-10 10:29:03,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:03,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:03,688 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] [2024-11-10 10:29:03,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 10:29:03,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:03,892 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:03,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:03,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1577210363, now seen corresponding path program 2 times [2024-11-10 10:29:03,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:03,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849119061] [2024-11-10 10:29:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:03,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:04,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:04,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849119061] [2024-11-10 10:29:04,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849119061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:04,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100265061] [2024-11-10 10:29:04,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:04,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:04,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:04,095 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:04,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:29:04,165 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:29:04,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:04,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:29:04,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:29:04,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:04,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100265061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:04,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:04,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-10 10:29:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061698266] [2024-11-10 10:29:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:04,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:29:04,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:04,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 94 transitions, 874 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:04,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:04,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:04,738 INFO L124 PetriNetUnfolderBase]: 701/1353 cut-off events. [2024-11-10 10:29:04,738 INFO L125 PetriNetUnfolderBase]: For 5075/5100 co-relation queries the response was YES. [2024-11-10 10:29:04,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 1353 events. 701/1353 cut-off events. For 5075/5100 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7529 event pairs, 166 based on Foata normal form. 14/1354 useless extension candidates. Maximal degree in co-relation 5251. Up to 879 conditions per place. [2024-11-10 10:29:04,749 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 86 selfloop transitions, 28 changer transitions 10/131 dead transitions. [2024-11-10 10:29:04,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 131 transitions, 1326 flow [2024-11-10 10:29:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-11-10 10:29:04,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-11-10 10:29:04,752 INFO L175 Difference]: Start difference. First operand has 121 places, 94 transitions, 874 flow. Second operand 10 states and 168 transitions. [2024-11-10 10:29:04,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 131 transitions, 1326 flow [2024-11-10 10:29:04,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 131 transitions, 1244 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:04,765 INFO L231 Difference]: Finished difference. Result has 125 places, 96 transitions, 907 flow [2024-11-10 10:29:04,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=907, PETRI_PLACES=125, PETRI_TRANSITIONS=96} [2024-11-10 10:29:04,766 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 89 predicate places. [2024-11-10 10:29:04,766 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 96 transitions, 907 flow [2024-11-10 10:29:04,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:04,766 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] [2024-11-10 10:29:04,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:04,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 10:29:04,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:04,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash -957300023, now seen corresponding path program 3 times [2024-11-10 10:29:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826483337] [2024-11-10 10:29:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826483337] [2024-11-10 10:29:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826483337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762611544] [2024-11-10 10:29:05,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:05,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:05,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:05,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:29:05,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:29:05,217 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:05,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:29:05,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:29:05,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:05,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762611544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:05,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:05,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-10 10:29:05,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187660653] [2024-11-10 10:29:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:05,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:05,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:05,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:29:05,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:05,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 96 transitions, 907 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:05,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:05,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:05,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:05,723 INFO L124 PetriNetUnfolderBase]: 682/1313 cut-off events. [2024-11-10 10:29:05,724 INFO L125 PetriNetUnfolderBase]: For 4827/4851 co-relation queries the response was YES. [2024-11-10 10:29:05,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5247 conditions, 1313 events. 682/1313 cut-off events. For 4827/4851 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7222 event pairs, 156 based on Foata normal form. 15/1318 useless extension candidates. Maximal degree in co-relation 5204. Up to 842 conditions per place. [2024-11-10 10:29:05,733 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 82 selfloop transitions, 26 changer transitions 15/130 dead transitions. [2024-11-10 10:29:05,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 130 transitions, 1312 flow [2024-11-10 10:29:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-11-10 10:29:05,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3840909090909091 [2024-11-10 10:29:05,734 INFO L175 Difference]: Start difference. First operand has 125 places, 96 transitions, 907 flow. Second operand 10 states and 169 transitions. [2024-11-10 10:29:05,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 130 transitions, 1312 flow [2024-11-10 10:29:05,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 130 transitions, 1238 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-10 10:29:05,748 INFO L231 Difference]: Finished difference. Result has 127 places, 93 transitions, 865 flow [2024-11-10 10:29:05,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=865, PETRI_PLACES=127, PETRI_TRANSITIONS=93} [2024-11-10 10:29:05,748 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 91 predicate places. [2024-11-10 10:29:05,749 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 93 transitions, 865 flow [2024-11-10 10:29:05,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:05,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:05,749 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] [2024-11-10 10:29:05,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:05,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 10:29:05,952 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:05,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1543673599, now seen corresponding path program 4 times [2024-11-10 10:29:05,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:05,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872897409] [2024-11-10 10:29:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:06,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:06,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872897409] [2024-11-10 10:29:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872897409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:06,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129286987] [2024-11-10 10:29:06,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:06,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:06,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:06,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:06,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:29:06,190 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:06,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:06,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 10:29:06,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:06,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:06,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129286987] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:06,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:06,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-10 10:29:06,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80813699] [2024-11-10 10:29:06,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:06,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:06,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-10 10:29:06,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:06,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 93 transitions, 865 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:06,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:06,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:06,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:07,197 INFO L124 PetriNetUnfolderBase]: 657/1253 cut-off events. [2024-11-10 10:29:07,198 INFO L125 PetriNetUnfolderBase]: For 4649/4671 co-relation queries the response was YES. [2024-11-10 10:29:07,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5008 conditions, 1253 events. 657/1253 cut-off events. For 4649/4671 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6722 event pairs, 137 based on Foata normal form. 13/1257 useless extension candidates. Maximal degree in co-relation 4966. Up to 738 conditions per place. [2024-11-10 10:29:07,207 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 80 selfloop transitions, 31 changer transitions 17/135 dead transitions. [2024-11-10 10:29:07,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 1270 flow [2024-11-10 10:29:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:29:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:29:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 209 transitions. [2024-11-10 10:29:07,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2024-11-10 10:29:07,210 INFO L175 Difference]: Start difference. First operand has 127 places, 93 transitions, 865 flow. Second operand 13 states and 209 transitions. [2024-11-10 10:29:07,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 1270 flow [2024-11-10 10:29:07,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 135 transitions, 1194 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-10 10:29:07,222 INFO L231 Difference]: Finished difference. Result has 127 places, 89 transitions, 816 flow [2024-11-10 10:29:07,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=816, PETRI_PLACES=127, PETRI_TRANSITIONS=89} [2024-11-10 10:29:07,223 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 91 predicate places. [2024-11-10 10:29:07,223 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 89 transitions, 816 flow [2024-11-10 10:29:07,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:07,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:07,223 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] [2024-11-10 10:29:07,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:07,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 10:29:07,427 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:07,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash 180551099, now seen corresponding path program 5 times [2024-11-10 10:29:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752147379] [2024-11-10 10:29:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:07,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752147379] [2024-11-10 10:29:07,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752147379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477091039] [2024-11-10 10:29:07,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:07,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:07,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:07,613 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:07,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:29:07,681 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:07,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:07,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 10:29:07,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:07,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477091039] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:08,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:08,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-10 10:29:08,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745906881] [2024-11-10 10:29:08,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:08,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:08,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:08,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-10 10:29:08,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:08,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 89 transitions, 816 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:08,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:08,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:08,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:09,003 INFO L124 PetriNetUnfolderBase]: 638/1205 cut-off events. [2024-11-10 10:29:09,003 INFO L125 PetriNetUnfolderBase]: For 4493/4517 co-relation queries the response was YES. [2024-11-10 10:29:09,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 1205 events. 638/1205 cut-off events. For 4493/4517 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6381 event pairs, 135 based on Foata normal form. 13/1207 useless extension candidates. Maximal degree in co-relation 4705. Up to 738 conditions per place. [2024-11-10 10:29:09,010 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 74 selfloop transitions, 29 changer transitions 16/126 dead transitions. [2024-11-10 10:29:09,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 1199 flow [2024-11-10 10:29:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:29:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:29:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-11-10 10:29:09,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3513986013986014 [2024-11-10 10:29:09,012 INFO L175 Difference]: Start difference. First operand has 127 places, 89 transitions, 816 flow. Second operand 13 states and 201 transitions. [2024-11-10 10:29:09,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 1199 flow [2024-11-10 10:29:09,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 126 transitions, 1111 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-11-10 10:29:09,022 INFO L231 Difference]: Finished difference. Result has 123 places, 85 transitions, 760 flow [2024-11-10 10:29:09,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=760, PETRI_PLACES=123, PETRI_TRANSITIONS=85} [2024-11-10 10:29:09,022 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 87 predicate places. [2024-11-10 10:29:09,022 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 85 transitions, 760 flow [2024-11-10 10:29:09,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:09,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:09,023 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] [2024-11-10 10:29:09,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:09,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 10:29:09,224 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:09,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash -731734657, now seen corresponding path program 6 times [2024-11-10 10:29:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:09,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114834445] [2024-11-10 10:29:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:09,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:09,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114834445] [2024-11-10 10:29:09,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114834445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666054140] [2024-11-10 10:29:09,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:09,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:09,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:09,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:09,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 10:29:09,533 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-10 10:29:09,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:09,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:29:09,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:29:09,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:09,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666054140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:09,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:09,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-10 10:29:09,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433160218] [2024-11-10 10:29:09,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:09,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:09,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:29:09,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:09,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 85 transitions, 760 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:09,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:09,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:09,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:09,962 INFO L124 PetriNetUnfolderBase]: 613/1143 cut-off events. [2024-11-10 10:29:09,962 INFO L125 PetriNetUnfolderBase]: For 4053/4071 co-relation queries the response was YES. [2024-11-10 10:29:09,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 1143 events. 613/1143 cut-off events. For 4053/4071 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5848 event pairs, 137 based on Foata normal form. 9/1143 useless extension candidates. Maximal degree in co-relation 4442. Up to 738 conditions per place. [2024-11-10 10:29:09,969 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 60 selfloop transitions, 18 changer transitions 25/110 dead transitions. [2024-11-10 10:29:09,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 110 transitions, 1051 flow [2024-11-10 10:29:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-11-10 10:29:09,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-10 10:29:09,970 INFO L175 Difference]: Start difference. First operand has 123 places, 85 transitions, 760 flow. Second operand 10 states and 160 transitions. [2024-11-10 10:29:09,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 110 transitions, 1051 flow [2024-11-10 10:29:09,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 986 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-10 10:29:09,982 INFO L231 Difference]: Finished difference. Result has 117 places, 74 transitions, 661 flow [2024-11-10 10:29:09,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=661, PETRI_PLACES=117, PETRI_TRANSITIONS=74} [2024-11-10 10:29:09,982 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2024-11-10 10:29:09,982 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 74 transitions, 661 flow [2024-11-10 10:29:09,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:09,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:09,983 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] [2024-11-10 10:29:09,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 10:29:10,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:10,183 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:10,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:10,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1823014894, now seen corresponding path program 1 times [2024-11-10 10:29:10,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:10,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021208535] [2024-11-10 10:29:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:10,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:29:10,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:10,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021208535] [2024-11-10 10:29:10,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021208535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:10,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:10,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:29:10,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245405448] [2024-11-10 10:29:10,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:10,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:29:10,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:10,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:29:10,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:29:10,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:10,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 74 transitions, 661 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:10,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:10,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:10,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:10,371 INFO L124 PetriNetUnfolderBase]: 394/808 cut-off events. [2024-11-10 10:29:10,371 INFO L125 PetriNetUnfolderBase]: For 2781/2791 co-relation queries the response was YES. [2024-11-10 10:29:10,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3130 conditions, 808 events. 394/808 cut-off events. For 2781/2791 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4256 event pairs, 209 based on Foata normal form. 36/837 useless extension candidates. Maximal degree in co-relation 3092. Up to 320 conditions per place. [2024-11-10 10:29:10,376 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 70 selfloop transitions, 10 changer transitions 6/93 dead transitions. [2024-11-10 10:29:10,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 897 flow [2024-11-10 10:29:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:29:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:29:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-11-10 10:29:10,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-11-10 10:29:10,396 INFO L175 Difference]: Start difference. First operand has 117 places, 74 transitions, 661 flow. Second operand 6 states and 113 transitions. [2024-11-10 10:29:10,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 897 flow [2024-11-10 10:29:10,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 93 transitions, 706 flow, removed 37 selfloop flow, removed 22 redundant places. [2024-11-10 10:29:10,404 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 406 flow [2024-11-10 10:29:10,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2024-11-10 10:29:10,405 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2024-11-10 10:29:10,405 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 406 flow [2024-11-10 10:29:10,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:10,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:10,405 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] [2024-11-10 10:29:10,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 10:29:10,406 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:10,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:10,406 INFO L85 PathProgramCache]: Analyzing trace with hash -790289855, now seen corresponding path program 1 times [2024-11-10 10:29:10,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:10,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316338997] [2024-11-10 10:29:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:10,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:29:10,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:10,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316338997] [2024-11-10 10:29:10,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316338997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:10,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:10,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:29:10,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852695484] [2024-11-10 10:29:10,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:10,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:29:10,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:29:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:29:10,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:10,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:10,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:10,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:10,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:10,590 INFO L124 PetriNetUnfolderBase]: 246/507 cut-off events. [2024-11-10 10:29:10,590 INFO L125 PetriNetUnfolderBase]: For 878/882 co-relation queries the response was YES. [2024-11-10 10:29:10,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 507 events. 246/507 cut-off events. For 878/882 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2233 event pairs, 133 based on Foata normal form. 24/527 useless extension candidates. Maximal degree in co-relation 1664. Up to 320 conditions per place. [2024-11-10 10:29:10,593 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 34 selfloop transitions, 2 changer transitions 26/69 dead transitions. [2024-11-10 10:29:10,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 69 transitions, 521 flow [2024-11-10 10:29:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:29:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:29:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-11-10 10:29:10,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-11-10 10:29:10,594 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 406 flow. Second operand 6 states and 103 transitions. [2024-11-10 10:29:10,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 69 transitions, 521 flow [2024-11-10 10:29:10,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 492 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-10 10:29:10,597 INFO L231 Difference]: Finished difference. Result has 77 places, 43 transitions, 190 flow [2024-11-10 10:29:10,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=77, PETRI_TRANSITIONS=43} [2024-11-10 10:29:10,598 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2024-11-10 10:29:10,598 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 43 transitions, 190 flow [2024-11-10 10:29:10,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:10,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:10,598 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:10,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 10:29:10,599 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:10,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:10,599 INFO L85 PathProgramCache]: Analyzing trace with hash 39684659, now seen corresponding path program 1 times [2024-11-10 10:29:10,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142234658] [2024-11-10 10:29:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:10,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:10,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:10,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142234658] [2024-11-10 10:29:10,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142234658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:10,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206101284] [2024-11-10 10:29:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:10,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:10,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:10,724 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:10,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 10:29:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:10,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:29:10,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:10,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:10,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206101284] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:10,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:10,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2024-11-10 10:29:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259620853] [2024-11-10 10:29:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:10,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:29:10,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:29:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:10,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-10 10:29:10,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 43 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:10,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:10,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-10 10:29:10,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:11,048 INFO L124 PetriNetUnfolderBase]: 250/446 cut-off events. [2024-11-10 10:29:11,048 INFO L125 PetriNetUnfolderBase]: For 385/385 co-relation queries the response was YES. [2024-11-10 10:29:11,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 446 events. 250/446 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1651 event pairs, 102 based on Foata normal form. 15/456 useless extension candidates. Maximal degree in co-relation 1392. Up to 271 conditions per place. [2024-11-10 10:29:11,050 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 41 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2024-11-10 10:29:11,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 353 flow [2024-11-10 10:29:11,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-11-10 10:29:11,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-11-10 10:29:11,051 INFO L175 Difference]: Start difference. First operand has 77 places, 43 transitions, 190 flow. Second operand 7 states and 99 transitions. [2024-11-10 10:29:11,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 353 flow [2024-11-10 10:29:11,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 311 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-11-10 10:29:11,053 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 203 flow [2024-11-10 10:29:11,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-11-10 10:29:11,054 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-10 10:29:11,054 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 203 flow [2024-11-10 10:29:11,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:11,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:11,054 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:11,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 10:29:11,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-10 10:29:11,255 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:11,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2098459171, now seen corresponding path program 1 times [2024-11-10 10:29:11,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:11,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949792849] [2024-11-10 10:29:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:11,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:11,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949792849] [2024-11-10 10:29:11,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949792849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:11,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023528614] [2024-11-10 10:29:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:11,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:11,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:11,359 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:11,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 10:29:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:11,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:29:11,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023528614] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:11,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:11,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2024-11-10 10:29:11,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857061120] [2024-11-10 10:29:11,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:11,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:29:11,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:11,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:29:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:11,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-10 10:29:11,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:11,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:11,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-10 10:29:11,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:11,656 INFO L124 PetriNetUnfolderBase]: 282/519 cut-off events. [2024-11-10 10:29:11,656 INFO L125 PetriNetUnfolderBase]: For 366/368 co-relation queries the response was YES. [2024-11-10 10:29:11,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 519 events. 282/519 cut-off events. For 366/368 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2000 event pairs, 123 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 1551. Up to 300 conditions per place. [2024-11-10 10:29:11,659 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 46 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2024-11-10 10:29:11,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 390 flow [2024-11-10 10:29:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:11,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-11-10 10:29:11,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3246753246753247 [2024-11-10 10:29:11,660 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 203 flow. Second operand 7 states and 100 transitions. [2024-11-10 10:29:11,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 390 flow [2024-11-10 10:29:11,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:29:11,661 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 239 flow [2024-11-10 10:29:11,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-11-10 10:29:11,662 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-10 10:29:11,662 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 239 flow [2024-11-10 10:29:11,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:11,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:11,663 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:11,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:11,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:11,864 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:11,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash -113957372, now seen corresponding path program 1 times [2024-11-10 10:29:11,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:11,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437383520] [2024-11-10 10:29:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:12,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:12,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437383520] [2024-11-10 10:29:12,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437383520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:12,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305821434] [2024-11-10 10:29:12,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:12,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:12,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:12,800 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:12,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 10:29:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:12,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 10:29:12,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:13,255 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:13,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:13,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:13,787 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:29:13,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-10 10:29:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:13,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305821434] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:13,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:13,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-10 10:29:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387908797] [2024-11-10 10:29:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:13,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:13,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 10:29:14,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:14,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 239 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:14,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:14,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:14,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:14,951 INFO L124 PetriNetUnfolderBase]: 436/786 cut-off events. [2024-11-10 10:29:14,955 INFO L125 PetriNetUnfolderBase]: For 1021/1065 co-relation queries the response was YES. [2024-11-10 10:29:14,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 786 events. 436/786 cut-off events. For 1021/1065 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3438 event pairs, 55 based on Foata normal form. 5/786 useless extension candidates. Maximal degree in co-relation 2629. Up to 244 conditions per place. [2024-11-10 10:29:14,959 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 101 selfloop transitions, 28 changer transitions 10/148 dead transitions. [2024-11-10 10:29:14,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 148 transitions, 968 flow [2024-11-10 10:29:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:29:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:29:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 280 transitions. [2024-11-10 10:29:14,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-10 10:29:14,965 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 239 flow. Second operand 14 states and 280 transitions. [2024-11-10 10:29:14,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 148 transitions, 968 flow [2024-11-10 10:29:14,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 148 transitions, 961 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:14,972 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 497 flow [2024-11-10 10:29:14,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=497, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-11-10 10:29:14,973 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2024-11-10 10:29:14,973 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 497 flow [2024-11-10 10:29:14,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:14,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:14,973 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:14,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:15,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:15,175 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:15,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash 709865274, now seen corresponding path program 2 times [2024-11-10 10:29:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942042821] [2024-11-10 10:29:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:16,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:16,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942042821] [2024-11-10 10:29:16,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942042821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:16,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85208378] [2024-11-10 10:29:16,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:16,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:16,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:16,031 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:16,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 10:29:16,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:29:16,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:16,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:16,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:16,199 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:16,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:16,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:16,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85208378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:16,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:16,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:16,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396194104] [2024-11-10 10:29:16,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:16,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:16,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:16,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:16,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:16,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 497 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:16,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:16,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:16,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:16,689 INFO L124 PetriNetUnfolderBase]: 525/937 cut-off events. [2024-11-10 10:29:16,689 INFO L125 PetriNetUnfolderBase]: For 3452/3505 co-relation queries the response was YES. [2024-11-10 10:29:16,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 937 events. 525/937 cut-off events. For 3452/3505 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4367 event pairs, 195 based on Foata normal form. 7/938 useless extension candidates. Maximal degree in co-relation 3981. Up to 578 conditions per place. [2024-11-10 10:29:16,694 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 75 selfloop transitions, 29 changer transitions 17/130 dead transitions. [2024-11-10 10:29:16,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 130 transitions, 1205 flow [2024-11-10 10:29:16,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:29:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:29:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-11-10 10:29:16,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4256198347107438 [2024-11-10 10:29:16,696 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 497 flow. Second operand 11 states and 206 transitions. [2024-11-10 10:29:16,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 130 transitions, 1205 flow [2024-11-10 10:29:16,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 130 transitions, 1161 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-11-10 10:29:16,704 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 832 flow [2024-11-10 10:29:16,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=832, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2024-11-10 10:29:16,705 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 56 predicate places. [2024-11-10 10:29:16,705 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 832 flow [2024-11-10 10:29:16,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:16,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:16,705 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:16,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:16,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 10:29:16,906 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:16,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -203340180, now seen corresponding path program 3 times [2024-11-10 10:29:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:16,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196688854] [2024-11-10 10:29:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:17,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196688854] [2024-11-10 10:29:17,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196688854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279724910] [2024-11-10 10:29:17,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:17,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:17,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:17,613 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:17,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 10:29:17,684 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:29:17,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:17,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:17,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:17,870 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:17,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:17,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279724910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:17,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:17,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052720082] [2024-11-10 10:29:17,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:17,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:17,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:17,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:17,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:17,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 832 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:17,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:17,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:17,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:18,354 INFO L124 PetriNetUnfolderBase]: 510/910 cut-off events. [2024-11-10 10:29:18,354 INFO L125 PetriNetUnfolderBase]: For 4221/4272 co-relation queries the response was YES. [2024-11-10 10:29:18,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 910 events. 510/910 cut-off events. For 4221/4272 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4221 event pairs, 130 based on Foata normal form. 5/909 useless extension candidates. Maximal degree in co-relation 4170. Up to 380 conditions per place. [2024-11-10 10:29:18,359 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 103 selfloop transitions, 26 changer transitions 18/156 dead transitions. [2024-11-10 10:29:18,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 156 transitions, 1518 flow [2024-11-10 10:29:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:29:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:29:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-11-10 10:29:18,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4412878787878788 [2024-11-10 10:29:18,361 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 832 flow. Second operand 12 states and 233 transitions. [2024-11-10 10:29:18,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 156 transitions, 1518 flow [2024-11-10 10:29:18,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 156 transitions, 1401 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-11-10 10:29:18,371 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 782 flow [2024-11-10 10:29:18,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=782, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-11-10 10:29:18,371 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2024-11-10 10:29:18,371 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 782 flow [2024-11-10 10:29:18,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:18,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:18,372 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:18,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:18,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-10 10:29:18,572 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:18,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash 721537772, now seen corresponding path program 4 times [2024-11-10 10:29:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:18,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052658088] [2024-11-10 10:29:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:19,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:19,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052658088] [2024-11-10 10:29:19,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052658088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:19,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140351817] [2024-11-10 10:29:19,184 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:19,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:19,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:19,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:19,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 10:29:19,261 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:19,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:19,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:29:19,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:19,598 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:19,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:19,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:20,156 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:29:20,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-11-10 10:29:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:20,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140351817] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:20,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:20,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 15] total 36 [2024-11-10 10:29:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411475442] [2024-11-10 10:29:20,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:20,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 10:29:20,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:29:20,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 782 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:20,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:20,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:29:20,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:21,316 INFO L124 PetriNetUnfolderBase]: 610/1076 cut-off events. [2024-11-10 10:29:21,317 INFO L125 PetriNetUnfolderBase]: For 4674/4674 co-relation queries the response was YES. [2024-11-10 10:29:21,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 1076 events. 610/1076 cut-off events. For 4674/4674 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5099 event pairs, 81 based on Foata normal form. 1/1073 useless extension candidates. Maximal degree in co-relation 4939. Up to 484 conditions per place. [2024-11-10 10:29:21,322 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 102 selfloop transitions, 64 changer transitions 16/189 dead transitions. [2024-11-10 10:29:21,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 189 transitions, 1864 flow [2024-11-10 10:29:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 10:29:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 10:29:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 317 transitions. [2024-11-10 10:29:21,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3791866028708134 [2024-11-10 10:29:21,327 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 782 flow. Second operand 19 states and 317 transitions. [2024-11-10 10:29:21,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 189 transitions, 1864 flow [2024-11-10 10:29:21,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 189 transitions, 1746 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:21,338 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 1223 flow [2024-11-10 10:29:21,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1223, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2024-11-10 10:29:21,339 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 78 predicate places. [2024-11-10 10:29:21,339 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 1223 flow [2024-11-10 10:29:21,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:21,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:21,340 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:21,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-10 10:29:21,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-10 10:29:21,543 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:21,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:21,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1477874676, now seen corresponding path program 5 times [2024-11-10 10:29:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:21,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839012638] [2024-11-10 10:29:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:21,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:22,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:22,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839012638] [2024-11-10 10:29:22,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839012638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:22,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887464075] [2024-11-10 10:29:22,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:22,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:22,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:22,126 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:22,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 10:29:22,194 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:22,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:22,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-10 10:29:22,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:22,641 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 10:29:22,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-11-10 10:29:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:22,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:23,132 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:29:23,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-10 10:29:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:23,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887464075] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:23,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:23,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 15] total 35 [2024-11-10 10:29:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229811500] [2024-11-10 10:29:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:23,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 10:29:23,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:23,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 1223 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:23,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:23,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:23,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:24,022 INFO L124 PetriNetUnfolderBase]: 549/985 cut-off events. [2024-11-10 10:29:24,022 INFO L125 PetriNetUnfolderBase]: For 5044/5091 co-relation queries the response was YES. [2024-11-10 10:29:24,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 985 events. 549/985 cut-off events. For 5044/5091 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4624 event pairs, 82 based on Foata normal form. 5/982 useless extension candidates. Maximal degree in co-relation 4904. Up to 526 conditions per place. [2024-11-10 10:29:24,028 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 102 selfloop transitions, 58 changer transitions 6/176 dead transitions. [2024-11-10 10:29:24,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 176 transitions, 1971 flow [2024-11-10 10:29:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:29:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:29:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 267 transitions. [2024-11-10 10:29:24,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43344155844155846 [2024-11-10 10:29:24,029 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 1223 flow. Second operand 14 states and 267 transitions. [2024-11-10 10:29:24,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 176 transitions, 1971 flow [2024-11-10 10:29:24,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 176 transitions, 1885 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-11-10 10:29:24,043 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 1459 flow [2024-11-10 10:29:24,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1459, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2024-11-10 10:29:24,047 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 90 predicate places. [2024-11-10 10:29:24,047 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 1459 flow [2024-11-10 10:29:24,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:24,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:24,047 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:24,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-10 10:29:24,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:24,252 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:24,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:24,252 INFO L85 PathProgramCache]: Analyzing trace with hash 830400610, now seen corresponding path program 6 times [2024-11-10 10:29:24,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:24,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258345778] [2024-11-10 10:29:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:24,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:24,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:24,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258345778] [2024-11-10 10:29:24,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258345778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:24,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513268310] [2024-11-10 10:29:24,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:24,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:24,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:24,838 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:24,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 10:29:24,910 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-10 10:29:24,910 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:24,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:24,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:25,077 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:25,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:25,133 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:25,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513268310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:25,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:25,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:25,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714024450] [2024-11-10 10:29:25,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:25,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:25,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:25,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:25,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:25,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 1459 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:25,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:25,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:25,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:25,567 INFO L124 PetriNetUnfolderBase]: 565/1020 cut-off events. [2024-11-10 10:29:25,568 INFO L125 PetriNetUnfolderBase]: For 5642/5687 co-relation queries the response was YES. [2024-11-10 10:29:25,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 1020 events. 565/1020 cut-off events. For 5642/5687 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4940 event pairs, 193 based on Foata normal form. 6/1018 useless extension candidates. Maximal degree in co-relation 5264. Up to 622 conditions per place. [2024-11-10 10:29:25,577 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 94 selfloop transitions, 47 changer transitions 13/164 dead transitions. [2024-11-10 10:29:25,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 164 transitions, 2007 flow [2024-11-10 10:29:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:29:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:29:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-11-10 10:29:25,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42768595041322316 [2024-11-10 10:29:25,578 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 1459 flow. Second operand 11 states and 207 transitions. [2024-11-10 10:29:25,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 164 transitions, 2007 flow [2024-11-10 10:29:25,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 164 transitions, 1903 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-11-10 10:29:25,596 INFO L231 Difference]: Finished difference. Result has 132 places, 121 transitions, 1484 flow [2024-11-10 10:29:25,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1484, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2024-11-10 10:29:25,597 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 96 predicate places. [2024-11-10 10:29:25,597 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 1484 flow [2024-11-10 10:29:25,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:25,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:25,597 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:25,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-10 10:29:25,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 10:29:25,802 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:25,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:25,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1735861362, now seen corresponding path program 7 times [2024-11-10 10:29:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:25,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203012196] [2024-11-10 10:29:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:25,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:26,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203012196] [2024-11-10 10:29:26,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203012196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:26,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95841195] [2024-11-10 10:29:26,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:26,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:26,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:26,468 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:26,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 10:29:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:26,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:29:26,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:26,873 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:26,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:26,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:27,493 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:29:27,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-10 10:29:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95841195] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:27,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:27,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 14] total 36 [2024-11-10 10:29:27,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762198085] [2024-11-10 10:29:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:27,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:27,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 10:29:27,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:27,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 1484 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:27,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:27,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:27,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:28,477 INFO L124 PetriNetUnfolderBase]: 538/966 cut-off events. [2024-11-10 10:29:28,478 INFO L125 PetriNetUnfolderBase]: For 5566/5611 co-relation queries the response was YES. [2024-11-10 10:29:28,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 966 events. 538/966 cut-off events. For 5566/5611 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4583 event pairs, 70 based on Foata normal form. 5/963 useless extension candidates. Maximal degree in co-relation 5064. Up to 486 conditions per place. [2024-11-10 10:29:28,484 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 98 selfloop transitions, 58 changer transitions 11/177 dead transitions. [2024-11-10 10:29:28,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 177 transitions, 2079 flow [2024-11-10 10:29:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:29:28,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:29:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 269 transitions. [2024-11-10 10:29:28,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4366883116883117 [2024-11-10 10:29:28,487 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 1484 flow. Second operand 14 states and 269 transitions. [2024-11-10 10:29:28,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 177 transitions, 2079 flow [2024-11-10 10:29:28,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 177 transitions, 2030 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-10 10:29:28,502 INFO L231 Difference]: Finished difference. Result has 136 places, 118 transitions, 1507 flow [2024-11-10 10:29:28,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1507, PETRI_PLACES=136, PETRI_TRANSITIONS=118} [2024-11-10 10:29:28,503 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 100 predicate places. [2024-11-10 10:29:28,503 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 118 transitions, 1507 flow [2024-11-10 10:29:28,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:28,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:28,504 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:28,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:28,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:28,705 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:28,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:28,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1674183008, now seen corresponding path program 8 times [2024-11-10 10:29:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255266811] [2024-11-10 10:29:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:29,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:29,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255266811] [2024-11-10 10:29:29,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255266811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:29,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243874736] [2024-11-10 10:29:29,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:29,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:29,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:29,275 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:29,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-10 10:29:29,343 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:29:29,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:29,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:29,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:29,455 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:29,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:29,545 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:29,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243874736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:29,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:29,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:29,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927008519] [2024-11-10 10:29:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:29,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:29,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:29,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:29,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:29,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:29,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 118 transitions, 1507 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:29,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:29,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:29,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:29,784 INFO L124 PetriNetUnfolderBase]: 531/959 cut-off events. [2024-11-10 10:29:29,784 INFO L125 PetriNetUnfolderBase]: For 5623/5668 co-relation queries the response was YES. [2024-11-10 10:29:29,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5094 conditions, 959 events. 531/959 cut-off events. For 5623/5668 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4583 event pairs, 202 based on Foata normal form. 5/956 useless extension candidates. Maximal degree in co-relation 5053. Up to 635 conditions per place. [2024-11-10 10:29:29,790 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 91 selfloop transitions, 36 changer transitions 12/149 dead transitions. [2024-11-10 10:29:29,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 149 transitions, 1915 flow [2024-11-10 10:29:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:29:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:29:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-11-10 10:29:29,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-11-10 10:29:29,792 INFO L175 Difference]: Start difference. First operand has 136 places, 118 transitions, 1507 flow. Second operand 9 states and 173 transitions. [2024-11-10 10:29:29,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 149 transitions, 1915 flow [2024-11-10 10:29:29,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 149 transitions, 1788 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-10 10:29:29,805 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 1372 flow [2024-11-10 10:29:29,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1372, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-11-10 10:29:29,806 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 92 predicate places. [2024-11-10 10:29:29,806 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 1372 flow [2024-11-10 10:29:29,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:29,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:29,806 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:29,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:30,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:30,011 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:30,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:30,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2087704326, now seen corresponding path program 9 times [2024-11-10 10:29:30,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:30,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233568513] [2024-11-10 10:29:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:30,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:30,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233568513] [2024-11-10 10:29:30,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233568513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:30,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428780576] [2024-11-10 10:29:30,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:30,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:30,651 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:30,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-10 10:29:30,720 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:29:30,720 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:30,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:30,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:30,818 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:30,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:30,903 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:30,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428780576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:30,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:30,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:30,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099474563] [2024-11-10 10:29:30,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:30,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:30,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:30,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:30,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:30,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 1372 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:30,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:30,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:30,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:31,214 INFO L124 PetriNetUnfolderBase]: 542/976 cut-off events. [2024-11-10 10:29:31,214 INFO L125 PetriNetUnfolderBase]: For 5502/5547 co-relation queries the response was YES. [2024-11-10 10:29:31,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5139 conditions, 976 events. 542/976 cut-off events. For 5502/5547 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4669 event pairs, 206 based on Foata normal form. 1/969 useless extension candidates. Maximal degree in co-relation 5098. Up to 641 conditions per place. [2024-11-10 10:29:31,220 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 76 selfloop transitions, 45 changer transitions 14/145 dead transitions. [2024-11-10 10:29:31,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 145 transitions, 1874 flow [2024-11-10 10:29:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-11-10 10:29:31,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-10 10:29:31,222 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 1372 flow. Second operand 10 states and 187 transitions. [2024-11-10 10:29:31,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 145 transitions, 1874 flow [2024-11-10 10:29:31,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 145 transitions, 1769 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-10 10:29:31,234 INFO L231 Difference]: Finished difference. Result has 126 places, 116 transitions, 1421 flow [2024-11-10 10:29:31,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1421, PETRI_PLACES=126, PETRI_TRANSITIONS=116} [2024-11-10 10:29:31,235 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 90 predicate places. [2024-11-10 10:29:31,235 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 116 transitions, 1421 flow [2024-11-10 10:29:31,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:31,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:31,236 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:31,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:31,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:31,436 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:31,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1985404250, now seen corresponding path program 10 times [2024-11-10 10:29:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477390096] [2024-11-10 10:29:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:31,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:31,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477390096] [2024-11-10 10:29:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477390096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686653924] [2024-11-10 10:29:31,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:31,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:31,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:31,971 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:31,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-10 10:29:32,051 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:32,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:32,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:29:32,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:32,457 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:32,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:32,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:32,856 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:29:32,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 90 [2024-11-10 10:29:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:32,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686653924] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:32,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:32,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 15] total 36 [2024-11-10 10:29:32,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487504277] [2024-11-10 10:29:32,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:32,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:32,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 10:29:32,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-10 10:29:32,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 116 transitions, 1421 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:32,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:32,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-10 10:29:32,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:34,032 INFO L124 PetriNetUnfolderBase]: 628/1113 cut-off events. [2024-11-10 10:29:34,032 INFO L125 PetriNetUnfolderBase]: For 6208/6219 co-relation queries the response was YES. [2024-11-10 10:29:34,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 1113 events. 628/1113 cut-off events. For 6208/6219 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5344 event pairs, 71 based on Foata normal form. 1/1106 useless extension candidates. Maximal degree in co-relation 5774. Up to 557 conditions per place. [2024-11-10 10:29:34,039 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 92 selfloop transitions, 87 changer transitions 6/194 dead transitions. [2024-11-10 10:29:34,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 194 transitions, 2346 flow [2024-11-10 10:29:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 10:29:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 10:29:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 325 transitions. [2024-11-10 10:29:34,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.388755980861244 [2024-11-10 10:29:34,041 INFO L175 Difference]: Start difference. First operand has 126 places, 116 transitions, 1421 flow. Second operand 19 states and 325 transitions. [2024-11-10 10:29:34,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 194 transitions, 2346 flow [2024-11-10 10:29:34,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 194 transitions, 2269 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:34,065 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 1847 flow [2024-11-10 10:29:34,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1847, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-11-10 10:29:34,068 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 107 predicate places. [2024-11-10 10:29:34,068 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 1847 flow [2024-11-10 10:29:34,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:34,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:34,068 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:34,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:34,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:34,274 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:34,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1060360844, now seen corresponding path program 11 times [2024-11-10 10:29:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:34,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497347858] [2024-11-10 10:29:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:34,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:34,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497347858] [2024-11-10 10:29:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497347858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144240068] [2024-11-10 10:29:34,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:34,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:34,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:34,858 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:34,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-10 10:29:34,934 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:34,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:34,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-10 10:29:34,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:35,395 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 10:29:35,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-11-10 10:29:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:35,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:35,821 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:29:35,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 90 [2024-11-10 10:29:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:35,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144240068] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:35,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:35,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 15] total 35 [2024-11-10 10:29:35,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366301322] [2024-11-10 10:29:35,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:35,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:35,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 10:29:35,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:35,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 1847 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:35,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:35,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:35,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:36,781 INFO L124 PetriNetUnfolderBase]: 600/1075 cut-off events. [2024-11-10 10:29:36,781 INFO L125 PetriNetUnfolderBase]: For 7086/7119 co-relation queries the response was YES. [2024-11-10 10:29:36,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6046 conditions, 1075 events. 600/1075 cut-off events. For 7086/7119 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5211 event pairs, 74 based on Foata normal form. 3/1064 useless extension candidates. Maximal degree in co-relation 6000. Up to 566 conditions per place. [2024-11-10 10:29:36,788 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 87 selfloop transitions, 75 changer transitions 9/184 dead transitions. [2024-11-10 10:29:36,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 184 transitions, 2422 flow [2024-11-10 10:29:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:29:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:29:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 274 transitions. [2024-11-10 10:29:36,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-11-10 10:29:36,789 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 1847 flow. Second operand 15 states and 274 transitions. [2024-11-10 10:29:36,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 184 transitions, 2422 flow [2024-11-10 10:29:36,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 184 transitions, 2383 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-10 10:29:36,808 INFO L231 Difference]: Finished difference. Result has 155 places, 138 transitions, 1968 flow [2024-11-10 10:29:36,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1968, PETRI_PLACES=155, PETRI_TRANSITIONS=138} [2024-11-10 10:29:36,809 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 119 predicate places. [2024-11-10 10:29:36,809 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 138 transitions, 1968 flow [2024-11-10 10:29:36,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:36,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:36,809 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:36,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:37,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-10 10:29:37,014 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:37,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash -786344416, now seen corresponding path program 12 times [2024-11-10 10:29:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:37,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635117004] [2024-11-10 10:29:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:37,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:37,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:37,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635117004] [2024-11-10 10:29:37,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635117004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:37,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554835612] [2024-11-10 10:29:37,536 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:37,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:37,538 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:37,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-10 10:29:37,615 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-10 10:29:37,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:37,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:37,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:37,729 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:37,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:37,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:37,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554835612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:37,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:37,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234768501] [2024-11-10 10:29:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:37,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:37,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:37,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 138 transitions, 1968 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:37,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:37,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:37,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:38,108 INFO L124 PetriNetUnfolderBase]: 592/1069 cut-off events. [2024-11-10 10:29:38,108 INFO L125 PetriNetUnfolderBase]: For 7803/7834 co-relation queries the response was YES. [2024-11-10 10:29:38,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6176 conditions, 1069 events. 592/1069 cut-off events. For 7803/7834 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5231 event pairs, 212 based on Foata normal form. 3/1058 useless extension candidates. Maximal degree in co-relation 6128. Up to 694 conditions per place. [2024-11-10 10:29:38,115 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 88 selfloop transitions, 48 changer transitions 13/162 dead transitions. [2024-11-10 10:29:38,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 162 transitions, 2353 flow [2024-11-10 10:29:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:29:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:29:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-11-10 10:29:38,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40702479338842973 [2024-11-10 10:29:38,115 INFO L175 Difference]: Start difference. First operand has 155 places, 138 transitions, 1968 flow. Second operand 11 states and 197 transitions. [2024-11-10 10:29:38,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 162 transitions, 2353 flow [2024-11-10 10:29:38,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 162 transitions, 2163 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-10 10:29:38,133 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 1788 flow [2024-11-10 10:29:38,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1788, PETRI_PLACES=151, PETRI_TRANSITIONS=133} [2024-11-10 10:29:38,133 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 115 predicate places. [2024-11-10 10:29:38,133 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 1788 flow [2024-11-10 10:29:38,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:38,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:38,134 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:38,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-10 10:29:38,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-10 10:29:38,338 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:38,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash 453669238, now seen corresponding path program 13 times [2024-11-10 10:29:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291999023] [2024-11-10 10:29:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:39,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:39,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291999023] [2024-11-10 10:29:39,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291999023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:39,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147955058] [2024-11-10 10:29:39,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:39,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:39,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:39,025 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:39,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-10 10:29:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:39,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:29:39,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:39,451 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:39,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:39,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:39,998 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:29:39,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-11-10 10:29:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147955058] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:40,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:40,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 14] total 34 [2024-11-10 10:29:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013907434] [2024-11-10 10:29:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:40,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 10:29:40,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:40,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 133 transitions, 1788 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:40,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:40,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:40,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:41,073 INFO L124 PetriNetUnfolderBase]: 716/1287 cut-off events. [2024-11-10 10:29:41,074 INFO L125 PetriNetUnfolderBase]: For 9265/9295 co-relation queries the response was YES. [2024-11-10 10:29:41,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7244 conditions, 1287 events. 716/1287 cut-off events. For 9265/9295 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6505 event pairs, 83 based on Foata normal form. 3/1282 useless extension candidates. Maximal degree in co-relation 7196. Up to 584 conditions per place. [2024-11-10 10:29:41,085 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 123 selfloop transitions, 82 changer transitions 10/228 dead transitions. [2024-11-10 10:29:41,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 228 transitions, 2993 flow [2024-11-10 10:29:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:29:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:29:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 312 transitions. [2024-11-10 10:29:41,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41711229946524064 [2024-11-10 10:29:41,087 INFO L175 Difference]: Start difference. First operand has 151 places, 133 transitions, 1788 flow. Second operand 17 states and 312 transitions. [2024-11-10 10:29:41,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 228 transitions, 2993 flow [2024-11-10 10:29:41,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 228 transitions, 2867 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:41,110 INFO L231 Difference]: Finished difference. Result has 163 places, 167 transitions, 2453 flow [2024-11-10 10:29:41,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2453, PETRI_PLACES=163, PETRI_TRANSITIONS=167} [2024-11-10 10:29:41,111 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 127 predicate places. [2024-11-10 10:29:41,111 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 167 transitions, 2453 flow [2024-11-10 10:29:41,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:41,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:41,111 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:41,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:41,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-10 10:29:41,312 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:41,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1625287510, now seen corresponding path program 14 times [2024-11-10 10:29:41,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:41,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138428650] [2024-11-10 10:29:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:41,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138428650] [2024-11-10 10:29:41,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138428650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806771412] [2024-11-10 10:29:41,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:41,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:41,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:41,879 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:41,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-10 10:29:41,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:29:41,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:41,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:41,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:42,048 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:42,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:42,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806771412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:42,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:42,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:42,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398217374] [2024-11-10 10:29:42,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:42,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:42,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:42,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:42,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:42,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 167 transitions, 2453 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:42,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:42,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:42,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:42,465 INFO L124 PetriNetUnfolderBase]: 734/1317 cut-off events. [2024-11-10 10:29:42,465 INFO L125 PetriNetUnfolderBase]: For 11100/11134 co-relation queries the response was YES. [2024-11-10 10:29:42,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7922 conditions, 1317 events. 734/1317 cut-off events. For 11100/11134 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6708 event pairs, 252 based on Foata normal form. 7/1316 useless extension candidates. Maximal degree in co-relation 7866. Up to 813 conditions per place. [2024-11-10 10:29:42,474 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 123 selfloop transitions, 51 changer transitions 15/202 dead transitions. [2024-11-10 10:29:42,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 202 transitions, 3117 flow [2024-11-10 10:29:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-11-10 10:29:42,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-11-10 10:29:42,476 INFO L175 Difference]: Start difference. First operand has 163 places, 167 transitions, 2453 flow. Second operand 10 states and 185 transitions. [2024-11-10 10:29:42,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 202 transitions, 3117 flow [2024-11-10 10:29:42,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 202 transitions, 2961 flow, removed 78 selfloop flow, removed 1 redundant places. [2024-11-10 10:29:42,508 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 2480 flow [2024-11-10 10:29:42,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2480, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2024-11-10 10:29:42,509 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 135 predicate places. [2024-11-10 10:29:42,509 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 2480 flow [2024-11-10 10:29:42,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:42,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:42,509 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:42,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-10 10:29:42,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:42,710 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:42,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:42,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1130363264, now seen corresponding path program 15 times [2024-11-10 10:29:42,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:42,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010011719] [2024-11-10 10:29:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:42,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:43,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:43,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010011719] [2024-11-10 10:29:43,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010011719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:43,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217087284] [2024-11-10 10:29:43,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:43,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:43,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:43,236 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:43,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-10 10:29:43,309 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:29:43,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:43,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:43,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:43,484 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:43,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:43,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:43,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217087284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:43,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:43,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:43,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77533753] [2024-11-10 10:29:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:43,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:43,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:43,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 170 transitions, 2480 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:43,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:43,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:43,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:43,937 INFO L124 PetriNetUnfolderBase]: 748/1349 cut-off events. [2024-11-10 10:29:43,938 INFO L125 PetriNetUnfolderBase]: For 11061/11095 co-relation queries the response was YES. [2024-11-10 10:29:43,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8022 conditions, 1349 events. 748/1349 cut-off events. For 11061/11095 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6974 event pairs, 243 based on Foata normal form. 7/1348 useless extension candidates. Maximal degree in co-relation 7964. Up to 816 conditions per place. [2024-11-10 10:29:43,956 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 129 selfloop transitions, 59 changer transitions 10/211 dead transitions. [2024-11-10 10:29:43,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 211 transitions, 3193 flow [2024-11-10 10:29:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:29:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:29:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-11-10 10:29:43,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-11-10 10:29:43,964 INFO L175 Difference]: Start difference. First operand has 171 places, 170 transitions, 2480 flow. Second operand 12 states and 213 transitions. [2024-11-10 10:29:43,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 211 transitions, 3193 flow [2024-11-10 10:29:43,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 211 transitions, 3089 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:43,999 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 2674 flow [2024-11-10 10:29:43,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2674, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2024-11-10 10:29:43,999 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 145 predicate places. [2024-11-10 10:29:43,999 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 2674 flow [2024-11-10 10:29:44,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:44,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:44,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:44,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-10 10:29:44,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-10 10:29:44,200 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:44,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash 964264446, now seen corresponding path program 16 times [2024-11-10 10:29:44,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:44,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968276375] [2024-11-10 10:29:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:44,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:44,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:44,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968276375] [2024-11-10 10:29:44,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968276375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:44,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470135995] [2024-11-10 10:29:44,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:44,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:44,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:44,776 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:44,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-10 10:29:44,865 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:44,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:44,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:29:44,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:45,248 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:45,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:45,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:45,748 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:29:45,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-10 10:29:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:45,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470135995] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:45,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:45,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 14] total 34 [2024-11-10 10:29:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24680354] [2024-11-10 10:29:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:45,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 10:29:45,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-10 10:29:45,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 2674 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:45,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:45,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-10 10:29:45,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:46,802 INFO L124 PetriNetUnfolderBase]: 816/1458 cut-off events. [2024-11-10 10:29:46,803 INFO L125 PetriNetUnfolderBase]: For 11989/12003 co-relation queries the response was YES. [2024-11-10 10:29:46,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8727 conditions, 1458 events. 816/1458 cut-off events. For 11989/12003 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7530 event pairs, 86 based on Foata normal form. 5/1461 useless extension candidates. Maximal degree in co-relation 8664. Up to 658 conditions per place. [2024-11-10 10:29:46,814 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 130 selfloop transitions, 116 changer transitions 8/263 dead transitions. [2024-11-10 10:29:46,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 263 transitions, 4050 flow [2024-11-10 10:29:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:29:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:29:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 253 transitions. [2024-11-10 10:29:46,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-10 10:29:46,815 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 2674 flow. Second operand 14 states and 253 transitions. [2024-11-10 10:29:46,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 263 transitions, 4050 flow [2024-11-10 10:29:46,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 263 transitions, 3986 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-10 10:29:46,853 INFO L231 Difference]: Finished difference. Result has 195 places, 207 transitions, 3424 flow [2024-11-10 10:29:46,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3424, PETRI_PLACES=195, PETRI_TRANSITIONS=207} [2024-11-10 10:29:46,855 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 159 predicate places. [2024-11-10 10:29:46,856 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 207 transitions, 3424 flow [2024-11-10 10:29:46,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:46,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:46,856 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:46,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:47,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-10 10:29:47,057 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:47,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -120249410, now seen corresponding path program 17 times [2024-11-10 10:29:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153567045] [2024-11-10 10:29:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:47,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153567045] [2024-11-10 10:29:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153567045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41300916] [2024-11-10 10:29:47,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:47,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:47,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:47,787 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:47,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-10 10:29:47,863 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:47,863 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:47,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:29:47,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:48,168 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:48,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:48,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:48,752 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:29:48,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-11-10 10:29:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41300916] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:48,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:48,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14, 14] total 35 [2024-11-10 10:29:48,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077322082] [2024-11-10 10:29:48,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:48,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:48,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 10:29:48,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:48,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 207 transitions, 3424 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:48,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:48,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:48,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:49,812 INFO L124 PetriNetUnfolderBase]: 777/1391 cut-off events. [2024-11-10 10:29:49,812 INFO L125 PetriNetUnfolderBase]: For 13200/13238 co-relation queries the response was YES. [2024-11-10 10:29:49,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 1391 events. 777/1391 cut-off events. For 13200/13238 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7175 event pairs, 84 based on Foata normal form. 11/1394 useless extension candidates. Maximal degree in co-relation 8841. Up to 637 conditions per place. [2024-11-10 10:29:49,828 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 119 selfloop transitions, 112 changer transitions 12/256 dead transitions. [2024-11-10 10:29:49,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 256 transitions, 4131 flow [2024-11-10 10:29:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:29:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:29:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 279 transitions. [2024-11-10 10:29:49,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-11-10 10:29:49,833 INFO L175 Difference]: Start difference. First operand has 195 places, 207 transitions, 3424 flow. Second operand 15 states and 279 transitions. [2024-11-10 10:29:49,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 256 transitions, 4131 flow [2024-11-10 10:29:49,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 256 transitions, 4115 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:49,883 INFO L231 Difference]: Finished difference. Result has 209 places, 201 transitions, 3545 flow [2024-11-10 10:29:49,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3545, PETRI_PLACES=209, PETRI_TRANSITIONS=201} [2024-11-10 10:29:49,884 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 173 predicate places. [2024-11-10 10:29:49,884 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 201 transitions, 3545 flow [2024-11-10 10:29:49,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:49,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:49,884 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:49,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-10 10:29:50,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-10 10:29:50,089 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:50,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash -310806398, now seen corresponding path program 18 times [2024-11-10 10:29:50,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:50,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437470871] [2024-11-10 10:29:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:50,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:50,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:50,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437470871] [2024-11-10 10:29:50,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437470871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:50,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082040310] [2024-11-10 10:29:50,611 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:50,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:50,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:50,612 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:50,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-10 10:29:50,692 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-10 10:29:50,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:50,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:50,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:50,809 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:50,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:50,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:50,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082040310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:50,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:50,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:50,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829560575] [2024-11-10 10:29:50,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:50,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:50,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:50,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:50,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 201 transitions, 3545 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:50,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:50,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:50,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:51,330 INFO L124 PetriNetUnfolderBase]: 763/1365 cut-off events. [2024-11-10 10:29:51,330 INFO L125 PetriNetUnfolderBase]: For 14226/14264 co-relation queries the response was YES. [2024-11-10 10:29:51,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 1365 events. 763/1365 cut-off events. For 14226/14264 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7033 event pairs, 231 based on Foata normal form. 11/1368 useless extension candidates. Maximal degree in co-relation 8963. Up to 801 conditions per place. [2024-11-10 10:29:51,342 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 134 selfloop transitions, 67 changer transitions 15/229 dead transitions. [2024-11-10 10:29:51,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 229 transitions, 4101 flow [2024-11-10 10:29:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:29:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:29:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-11-10 10:29:51,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-11-10 10:29:51,343 INFO L175 Difference]: Start difference. First operand has 209 places, 201 transitions, 3545 flow. Second operand 11 states and 196 transitions. [2024-11-10 10:29:51,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 229 transitions, 4101 flow [2024-11-10 10:29:51,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 229 transitions, 3876 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-10 10:29:51,392 INFO L231 Difference]: Finished difference. Result has 202 places, 195 transitions, 3339 flow [2024-11-10 10:29:51,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3320, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3339, PETRI_PLACES=202, PETRI_TRANSITIONS=195} [2024-11-10 10:29:51,393 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 166 predicate places. [2024-11-10 10:29:51,393 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 195 transitions, 3339 flow [2024-11-10 10:29:51,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:51,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:51,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:51,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-10 10:29:51,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:51,594 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:51,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:51,594 INFO L85 PathProgramCache]: Analyzing trace with hash 73581766, now seen corresponding path program 19 times [2024-11-10 10:29:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925536013] [2024-11-10 10:29:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:52,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:52,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925536013] [2024-11-10 10:29:52,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925536013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:52,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523478359] [2024-11-10 10:29:52,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:52,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:52,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:52,281 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:52,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-10 10:29:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:52,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:29:52,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:52,755 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:52,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:52,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:53,169 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:29:53,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-11-10 10:29:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:53,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523478359] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:53,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:53,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 14] total 34 [2024-11-10 10:29:53,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575533023] [2024-11-10 10:29:53,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:53,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:53,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:53,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 10:29:53,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:53,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 195 transitions, 3339 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:53,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:53,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:53,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:53,888 INFO L124 PetriNetUnfolderBase]: 742/1317 cut-off events. [2024-11-10 10:29:53,889 INFO L125 PetriNetUnfolderBase]: For 13479/13517 co-relation queries the response was YES. [2024-11-10 10:29:53,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8662 conditions, 1317 events. 742/1317 cut-off events. For 13479/13517 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6669 event pairs, 88 based on Foata normal form. 11/1320 useless extension candidates. Maximal degree in co-relation 8593. Up to 627 conditions per place. [2024-11-10 10:29:53,898 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 110 selfloop transitions, 104 changer transitions 10/237 dead transitions. [2024-11-10 10:29:53,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 237 transitions, 3982 flow [2024-11-10 10:29:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:29:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:29:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 247 transitions. [2024-11-10 10:29:53,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-10 10:29:53,899 INFO L175 Difference]: Start difference. First operand has 202 places, 195 transitions, 3339 flow. Second operand 13 states and 247 transitions. [2024-11-10 10:29:53,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 237 transitions, 3982 flow [2024-11-10 10:29:53,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 237 transitions, 3802 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-10 10:29:53,944 INFO L231 Difference]: Finished difference. Result has 201 places, 193 transitions, 3351 flow [2024-11-10 10:29:53,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3351, PETRI_PLACES=201, PETRI_TRANSITIONS=193} [2024-11-10 10:29:53,944 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 165 predicate places. [2024-11-10 10:29:53,945 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 193 transitions, 3351 flow [2024-11-10 10:29:53,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:53,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:53,945 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:53,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-10 10:29:54,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-10 10:29:54,146 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:54,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1601343038, now seen corresponding path program 20 times [2024-11-10 10:29:54,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:54,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908100901] [2024-11-10 10:29:54,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:54,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:54,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908100901] [2024-11-10 10:29:54,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908100901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:54,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336902052] [2024-11-10 10:29:54,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:54,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:54,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:54,672 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:54,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-10 10:29:54,756 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:29:54,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:54,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:29:54,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:54,914 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:29:54,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-10 10:29:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:54,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:29:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336902052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:54,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:29:54,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-10 10:29:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301942377] [2024-11-10 10:29:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:54,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:29:54,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:29:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:29:54,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:54,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 193 transitions, 3351 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:54,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:54,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:54,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:55,461 INFO L124 PetriNetUnfolderBase]: 779/1394 cut-off events. [2024-11-10 10:29:55,462 INFO L125 PetriNetUnfolderBase]: For 14327/14365 co-relation queries the response was YES. [2024-11-10 10:29:55,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9080 conditions, 1394 events. 779/1394 cut-off events. For 14327/14365 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7174 event pairs, 206 based on Foata normal form. 11/1397 useless extension candidates. Maximal degree in co-relation 9011. Up to 693 conditions per place. [2024-11-10 10:29:55,472 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 155 selfloop transitions, 60 changer transitions 17/245 dead transitions. [2024-11-10 10:29:55,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 245 transitions, 4150 flow [2024-11-10 10:29:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:29:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:29:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-11-10 10:29:55,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40734265734265734 [2024-11-10 10:29:55,473 INFO L175 Difference]: Start difference. First operand has 201 places, 193 transitions, 3351 flow. Second operand 13 states and 233 transitions. [2024-11-10 10:29:55,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 245 transitions, 4150 flow [2024-11-10 10:29:55,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 245 transitions, 3932 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-10 10:29:55,520 INFO L231 Difference]: Finished difference. Result has 203 places, 194 transitions, 3373 flow [2024-11-10 10:29:55,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3373, PETRI_PLACES=203, PETRI_TRANSITIONS=194} [2024-11-10 10:29:55,521 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 167 predicate places. [2024-11-10 10:29:55,521 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 194 transitions, 3373 flow [2024-11-10 10:29:55,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:55,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:55,521 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:55,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:55,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:55,722 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:55,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:55,722 INFO L85 PathProgramCache]: Analyzing trace with hash -612621471, now seen corresponding path program 1 times [2024-11-10 10:29:55,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:55,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371388223] [2024-11-10 10:29:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:55,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371388223] [2024-11-10 10:29:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371388223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:55,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:29:55,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105485329] [2024-11-10 10:29:55,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:55,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:55,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:29:55,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:55,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 194 transitions, 3373 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:55,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:55,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:55,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:56,254 INFO L124 PetriNetUnfolderBase]: 795/1420 cut-off events. [2024-11-10 10:29:56,254 INFO L125 PetriNetUnfolderBase]: For 15125/15159 co-relation queries the response was YES. [2024-11-10 10:29:56,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9324 conditions, 1420 events. 795/1420 cut-off events. For 15125/15159 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7330 event pairs, 155 based on Foata normal form. 31/1445 useless extension candidates. Maximal degree in co-relation 9250. Up to 522 conditions per place. [2024-11-10 10:29:56,266 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 170 selfloop transitions, 74 changer transitions 0/257 dead transitions. [2024-11-10 10:29:56,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 257 transitions, 4423 flow [2024-11-10 10:29:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-11-10 10:29:56,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-10 10:29:56,267 INFO L175 Difference]: Start difference. First operand has 203 places, 194 transitions, 3373 flow. Second operand 10 states and 192 transitions. [2024-11-10 10:29:56,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 257 transitions, 4423 flow [2024-11-10 10:29:56,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 257 transitions, 4251 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-11-10 10:29:56,323 INFO L231 Difference]: Finished difference. Result has 201 places, 198 transitions, 3460 flow [2024-11-10 10:29:56,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3460, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2024-11-10 10:29:56,324 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 165 predicate places. [2024-11-10 10:29:56,324 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 3460 flow [2024-11-10 10:29:56,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:56,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:56,324 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:56,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-10 10:29:56,324 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:56,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash 356441505, now seen corresponding path program 2 times [2024-11-10 10:29:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:56,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419964110] [2024-11-10 10:29:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:56,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:56,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419964110] [2024-11-10 10:29:56,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419964110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436100146] [2024-11-10 10:29:56,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:56,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:56,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:56,505 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:56,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-10 10:29:56,585 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:56,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:56,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 10:29:56,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:56,656 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-10 10:29:56,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-10 10:29:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:56,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:56,744 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:29:56,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-10 10:29:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:56,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436100146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:56,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:56,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-10 10:29:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096044308] [2024-11-10 10:29:56,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:56,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 10:29:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:56,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 10:29:56,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:29:56,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:56,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 3460 flow. Second operand has 17 states, 17 states have (on average 13.647058823529411) internal successors, (232), 17 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:56,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:56,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:56,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:57,274 INFO L124 PetriNetUnfolderBase]: 1123/2014 cut-off events. [2024-11-10 10:29:57,274 INFO L125 PetriNetUnfolderBase]: For 21663/21712 co-relation queries the response was YES. [2024-11-10 10:29:57,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12799 conditions, 2014 events. 1123/2014 cut-off events. For 21663/21712 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11249 event pairs, 292 based on Foata normal form. 42/2048 useless extension candidates. Maximal degree in co-relation 12728. Up to 916 conditions per place. [2024-11-10 10:29:57,291 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 206 selfloop transitions, 87 changer transitions 0/306 dead transitions. [2024-11-10 10:29:57,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 306 transitions, 5315 flow [2024-11-10 10:29:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:29:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:29:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-11-10 10:29:57,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44507575757575757 [2024-11-10 10:29:57,293 INFO L175 Difference]: Start difference. First operand has 201 places, 198 transitions, 3460 flow. Second operand 12 states and 235 transitions. [2024-11-10 10:29:57,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 306 transitions, 5315 flow [2024-11-10 10:29:57,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 306 transitions, 5059 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-11-10 10:29:57,374 INFO L231 Difference]: Finished difference. Result has 207 places, 214 transitions, 3743 flow [2024-11-10 10:29:57,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3236, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3743, PETRI_PLACES=207, PETRI_TRANSITIONS=214} [2024-11-10 10:29:57,374 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 171 predicate places. [2024-11-10 10:29:57,375 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 214 transitions, 3743 flow [2024-11-10 10:29:57,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.647058823529411) internal successors, (232), 17 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:57,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:57,375 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:57,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:57,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-10 10:29:57,580 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:57,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:57,580 INFO L85 PathProgramCache]: Analyzing trace with hash 626562727, now seen corresponding path program 3 times [2024-11-10 10:29:57,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:57,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763041776] [2024-11-10 10:29:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:57,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:57,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:57,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763041776] [2024-11-10 10:29:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763041776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:57,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267612428] [2024-11-10 10:29:57,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:57,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:57,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:57,768 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:57,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-10 10:29:57,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:29:57,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:57,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 10:29:57,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:57,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:29:57,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-10 10:29:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:57,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:58,027 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:29:58,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-10 10:29:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:58,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267612428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:58,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:58,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 18 [2024-11-10 10:29:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779643958] [2024-11-10 10:29:58,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:58,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:29:58,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:29:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:29:58,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:58,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 214 transitions, 3743 flow. Second operand has 18 states, 18 states have (on average 13.555555555555555) internal successors, (244), 18 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:58,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:58,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:58,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:58,870 INFO L124 PetriNetUnfolderBase]: 1282/2359 cut-off events. [2024-11-10 10:29:58,870 INFO L125 PetriNetUnfolderBase]: For 25847/25928 co-relation queries the response was YES. [2024-11-10 10:29:58,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14486 conditions, 2359 events. 1282/2359 cut-off events. For 25847/25928 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14001 event pairs, 387 based on Foata normal form. 59/2410 useless extension candidates. Maximal degree in co-relation 14414. Up to 1169 conditions per place. [2024-11-10 10:29:58,890 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 225 selfloop transitions, 96 changer transitions 0/334 dead transitions. [2024-11-10 10:29:58,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 334 transitions, 5522 flow [2024-11-10 10:29:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 10:29:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 10:29:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 328 transitions. [2024-11-10 10:29:58,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-11-10 10:29:58,891 INFO L175 Difference]: Start difference. First operand has 207 places, 214 transitions, 3743 flow. Second operand 18 states and 328 transitions. [2024-11-10 10:29:58,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 334 transitions, 5522 flow [2024-11-10 10:29:58,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 334 transitions, 5302 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-11-10 10:29:58,979 INFO L231 Difference]: Finished difference. Result has 224 places, 230 transitions, 4048 flow [2024-11-10 10:29:58,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4048, PETRI_PLACES=224, PETRI_TRANSITIONS=230} [2024-11-10 10:29:58,980 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 188 predicate places. [2024-11-10 10:29:58,980 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 230 transitions, 4048 flow [2024-11-10 10:29:58,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.555555555555555) internal successors, (244), 18 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:58,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:58,980 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:58,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:59,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:59,185 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:59,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash -635748097, now seen corresponding path program 4 times [2024-11-10 10:29:59,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:59,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533518344] [2024-11-10 10:29:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:59,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:29:59,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:59,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533518344] [2024-11-10 10:29:59,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533518344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:59,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:59,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:29:59,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17494427] [2024-11-10 10:29:59,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:59,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:59,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:29:59,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:29:59,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 230 transitions, 4048 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:59,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:59,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:29:59,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:59,985 INFO L124 PetriNetUnfolderBase]: 1178/2130 cut-off events. [2024-11-10 10:29:59,985 INFO L125 PetriNetUnfolderBase]: For 23875/23955 co-relation queries the response was YES. [2024-11-10 10:29:59,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13777 conditions, 2130 events. 1178/2130 cut-off events. For 23875/23955 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12152 event pairs, 480 based on Foata normal form. 26/2139 useless extension candidates. Maximal degree in co-relation 13698. Up to 1569 conditions per place. [2024-11-10 10:30:00,008 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 164 selfloop transitions, 68 changer transitions 5/250 dead transitions. [2024-11-10 10:30:00,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 250 transitions, 4559 flow [2024-11-10 10:30:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:30:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:30:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-11-10 10:30:00,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-11-10 10:30:00,010 INFO L175 Difference]: Start difference. First operand has 224 places, 230 transitions, 4048 flow. Second operand 10 states and 175 transitions. [2024-11-10 10:30:00,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 250 transitions, 4559 flow [2024-11-10 10:30:00,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 250 transitions, 4423 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-10 10:30:00,121 INFO L231 Difference]: Finished difference. Result has 222 places, 223 transitions, 3890 flow [2024-11-10 10:30:00,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3810, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3890, PETRI_PLACES=222, PETRI_TRANSITIONS=223} [2024-11-10 10:30:00,122 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 186 predicate places. [2024-11-10 10:30:00,122 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 223 transitions, 3890 flow [2024-11-10 10:30:00,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:00,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:00,122 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:00,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-10 10:30:00,123 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:00,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1806166283, now seen corresponding path program 5 times [2024-11-10 10:30:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:00,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797552546] [2024-11-10 10:30:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:00,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:00,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797552546] [2024-11-10 10:30:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797552546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885021840] [2024-11-10 10:30:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:00,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:00,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:00,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 223 transitions, 3890 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:00,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:00,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:00,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:00,839 INFO L124 PetriNetUnfolderBase]: 1315/2357 cut-off events. [2024-11-10 10:30:00,839 INFO L125 PetriNetUnfolderBase]: For 31726/31804 co-relation queries the response was YES. [2024-11-10 10:30:00,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15650 conditions, 2357 events. 1315/2357 cut-off events. For 31726/31804 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13650 event pairs, 477 based on Foata normal form. 34/2376 useless extension candidates. Maximal degree in co-relation 15572. Up to 1623 conditions per place. [2024-11-10 10:30:00,861 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 186 selfloop transitions, 69 changer transitions 0/268 dead transitions. [2024-11-10 10:30:00,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 268 transitions, 4969 flow [2024-11-10 10:30:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:30:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:30:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-11-10 10:30:00,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-11-10 10:30:00,862 INFO L175 Difference]: Start difference. First operand has 222 places, 223 transitions, 3890 flow. Second operand 9 states and 175 transitions. [2024-11-10 10:30:00,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 268 transitions, 4969 flow [2024-11-10 10:30:00,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 268 transitions, 4794 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-10 10:30:00,974 INFO L231 Difference]: Finished difference. Result has 219 places, 230 transitions, 4027 flow [2024-11-10 10:30:00,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4027, PETRI_PLACES=219, PETRI_TRANSITIONS=230} [2024-11-10 10:30:00,975 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 183 predicate places. [2024-11-10 10:30:00,975 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 230 transitions, 4027 flow [2024-11-10 10:30:00,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:00,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:00,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:00,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-10 10:30:00,975 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:00,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:00,975 INFO L85 PathProgramCache]: Analyzing trace with hash 361740199, now seen corresponding path program 6 times [2024-11-10 10:30:00,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:00,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134490677] [2024-11-10 10:30:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:00,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:01,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134490677] [2024-11-10 10:30:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134490677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441770760] [2024-11-10 10:30:01,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:30:01,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:01,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:01,176 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:01,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-10 10:30:01,259 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 10:30:01,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:01,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 10:30:01,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:01,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:30:01,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-10 10:30:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:01,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:01,401 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:30:01,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-10 10:30:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441770760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:01,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:01,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-10 10:30:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020609612] [2024-11-10 10:30:01,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:01,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 10:30:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 10:30:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:30:01,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:01,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 230 transitions, 4027 flow. Second operand has 17 states, 17 states have (on average 13.588235294117647) internal successors, (231), 17 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:01,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:01,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:01,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:02,194 INFO L124 PetriNetUnfolderBase]: 1417/2555 cut-off events. [2024-11-10 10:30:02,194 INFO L125 PetriNetUnfolderBase]: For 37311/37413 co-relation queries the response was YES. [2024-11-10 10:30:02,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17140 conditions, 2555 events. 1417/2555 cut-off events. For 37311/37413 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15281 event pairs, 529 based on Foata normal form. 34/2572 useless extension candidates. Maximal degree in co-relation 17061. Up to 1783 conditions per place. [2024-11-10 10:30:02,222 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 194 selfloop transitions, 76 changer transitions 0/283 dead transitions. [2024-11-10 10:30:02,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 283 transitions, 5111 flow [2024-11-10 10:30:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:30:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:30:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 246 transitions. [2024-11-10 10:30:02,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39935064935064934 [2024-11-10 10:30:02,224 INFO L175 Difference]: Start difference. First operand has 219 places, 230 transitions, 4027 flow. Second operand 14 states and 246 transitions. [2024-11-10 10:30:02,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 283 transitions, 5111 flow [2024-11-10 10:30:02,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 283 transitions, 4955 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-11-10 10:30:02,354 INFO L231 Difference]: Finished difference. Result has 230 places, 241 transitions, 4345 flow [2024-11-10 10:30:02,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3894, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4345, PETRI_PLACES=230, PETRI_TRANSITIONS=241} [2024-11-10 10:30:02,354 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 194 predicate places. [2024-11-10 10:30:02,355 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 241 transitions, 4345 flow [2024-11-10 10:30:02,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.588235294117647) internal successors, (231), 17 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:02,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:02,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:02,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-10 10:30:02,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-10 10:30:02,560 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:02,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2104101369, now seen corresponding path program 7 times [2024-11-10 10:30:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:02,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335998491] [2024-11-10 10:30:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:02,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:02,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:02,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335998491] [2024-11-10 10:30:02,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335998491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:02,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:02,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:02,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154369756] [2024-11-10 10:30:02,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:02,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:02,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:02,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:02,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 241 transitions, 4345 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:02,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:02,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:02,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:03,218 INFO L124 PetriNetUnfolderBase]: 1395/2543 cut-off events. [2024-11-10 10:30:03,219 INFO L125 PetriNetUnfolderBase]: For 33580/33670 co-relation queries the response was YES. [2024-11-10 10:30:03,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16708 conditions, 2543 events. 1395/2543 cut-off events. For 33580/33670 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15345 event pairs, 565 based on Foata normal form. 34/2556 useless extension candidates. Maximal degree in co-relation 16626. Up to 1901 conditions per place. [2024-11-10 10:30:03,244 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 178 selfloop transitions, 73 changer transitions 0/264 dead transitions. [2024-11-10 10:30:03,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 264 transitions, 5032 flow [2024-11-10 10:30:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:30:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:30:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-11-10 10:30:03,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-11-10 10:30:03,245 INFO L175 Difference]: Start difference. First operand has 230 places, 241 transitions, 4345 flow. Second operand 9 states and 169 transitions. [2024-11-10 10:30:03,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 264 transitions, 5032 flow [2024-11-10 10:30:03,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 264 transitions, 4895 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-11-10 10:30:03,387 INFO L231 Difference]: Finished difference. Result has 233 places, 242 transitions, 4395 flow [2024-11-10 10:30:03,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4395, PETRI_PLACES=233, PETRI_TRANSITIONS=242} [2024-11-10 10:30:03,388 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 197 predicate places. [2024-11-10 10:30:03,388 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 242 transitions, 4395 flow [2024-11-10 10:30:03,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:03,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:03,389 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:03,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-10 10:30:03,389 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:03,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:03,389 INFO L85 PathProgramCache]: Analyzing trace with hash -699871529, now seen corresponding path program 8 times [2024-11-10 10:30:03,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:03,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551093812] [2024-11-10 10:30:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:03,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:03,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551093812] [2024-11-10 10:30:03,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551093812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:03,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:03,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:03,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202454275] [2024-11-10 10:30:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:03,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:03,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:03,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:03,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 242 transitions, 4395 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:03,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:03,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:03,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:04,071 INFO L124 PetriNetUnfolderBase]: 1361/2479 cut-off events. [2024-11-10 10:30:04,071 INFO L125 PetriNetUnfolderBase]: For 29280/29376 co-relation queries the response was YES. [2024-11-10 10:30:04,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16220 conditions, 2479 events. 1361/2479 cut-off events. For 29280/29376 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14833 event pairs, 578 based on Foata normal form. 18/2476 useless extension candidates. Maximal degree in co-relation 16136. Up to 1879 conditions per place. [2024-11-10 10:30:04,100 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 170 selfloop transitions, 67 changer transitions 5/255 dead transitions. [2024-11-10 10:30:04,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 255 transitions, 4888 flow [2024-11-10 10:30:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:30:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:30:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-11-10 10:30:04,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2024-11-10 10:30:04,102 INFO L175 Difference]: Start difference. First operand has 233 places, 242 transitions, 4395 flow. Second operand 10 states and 177 transitions. [2024-11-10 10:30:04,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 255 transitions, 4888 flow [2024-11-10 10:30:04,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 255 transitions, 4756 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-10 10:30:04,236 INFO L231 Difference]: Finished difference. Result has 236 places, 237 transitions, 4262 flow [2024-11-10 10:30:04,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4262, PETRI_PLACES=236, PETRI_TRANSITIONS=237} [2024-11-10 10:30:04,237 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 200 predicate places. [2024-11-10 10:30:04,237 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 237 transitions, 4262 flow [2024-11-10 10:30:04,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:04,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:04,238 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:04,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-10 10:30:04,238 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:04,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1824483355, now seen corresponding path program 9 times [2024-11-10 10:30:04,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:04,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858934417] [2024-11-10 10:30:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:04,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:04,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858934417] [2024-11-10 10:30:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858934417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:04,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:04,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:04,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100872121] [2024-11-10 10:30:04,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:04,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:04,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:04,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 237 transitions, 4262 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:04,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:04,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:04,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:04,870 INFO L124 PetriNetUnfolderBase]: 1352/2472 cut-off events. [2024-11-10 10:30:04,871 INFO L125 PetriNetUnfolderBase]: For 28766/28850 co-relation queries the response was YES. [2024-11-10 10:30:04,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16009 conditions, 2472 events. 1352/2472 cut-off events. For 28766/28850 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14799 event pairs, 565 based on Foata normal form. 18/2469 useless extension candidates. Maximal degree in co-relation 15926. Up to 1873 conditions per place. [2024-11-10 10:30:04,961 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 169 selfloop transitions, 64 changer transitions 5/251 dead transitions. [2024-11-10 10:30:04,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 251 transitions, 4764 flow [2024-11-10 10:30:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:30:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:30:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-11-10 10:30:04,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-11-10 10:30:04,962 INFO L175 Difference]: Start difference. First operand has 236 places, 237 transitions, 4262 flow. Second operand 10 states and 175 transitions. [2024-11-10 10:30:04,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 251 transitions, 4764 flow [2024-11-10 10:30:05,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 251 transitions, 4636 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:30:05,073 INFO L231 Difference]: Finished difference. Result has 235 places, 233 transitions, 4150 flow [2024-11-10 10:30:05,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4078, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4150, PETRI_PLACES=235, PETRI_TRANSITIONS=233} [2024-11-10 10:30:05,074 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 199 predicate places. [2024-11-10 10:30:05,074 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 233 transitions, 4150 flow [2024-11-10 10:30:05,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:05,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:05,074 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:05,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-10 10:30:05,074 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:05,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1584137009, now seen corresponding path program 10 times [2024-11-10 10:30:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:05,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540634121] [2024-11-10 10:30:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:05,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:05,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:05,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540634121] [2024-11-10 10:30:05,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540634121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:05,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:05,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:05,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793561710] [2024-11-10 10:30:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:05,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:05,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:05,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 233 transitions, 4150 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:05,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:05,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:05,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:05,685 INFO L124 PetriNetUnfolderBase]: 1273/2311 cut-off events. [2024-11-10 10:30:05,686 INFO L125 PetriNetUnfolderBase]: For 27430/27514 co-relation queries the response was YES. [2024-11-10 10:30:05,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15127 conditions, 2311 events. 1273/2311 cut-off events. For 27430/27514 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13528 event pairs, 520 based on Foata normal form. 22/2316 useless extension candidates. Maximal degree in co-relation 15044. Up to 1739 conditions per place. [2024-11-10 10:30:05,708 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 167 selfloop transitions, 56 changer transitions 11/247 dead transitions. [2024-11-10 10:30:05,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 247 transitions, 4602 flow [2024-11-10 10:30:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:30:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:30:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-11-10 10:30:05,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.384297520661157 [2024-11-10 10:30:05,709 INFO L175 Difference]: Start difference. First operand has 235 places, 233 transitions, 4150 flow. Second operand 11 states and 186 transitions. [2024-11-10 10:30:05,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 247 transitions, 4602 flow [2024-11-10 10:30:05,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 247 transitions, 4464 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-10 10:30:05,820 INFO L231 Difference]: Finished difference. Result has 231 places, 224 transitions, 3922 flow [2024-11-10 10:30:05,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3922, PETRI_PLACES=231, PETRI_TRANSITIONS=224} [2024-11-10 10:30:05,821 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 195 predicate places. [2024-11-10 10:30:05,821 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 224 transitions, 3922 flow [2024-11-10 10:30:05,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:05,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:05,821 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:05,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-10 10:30:05,822 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:05,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash 241795106, now seen corresponding path program 1 times [2024-11-10 10:30:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:05,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193385676] [2024-11-10 10:30:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:05,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:05,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193385676] [2024-11-10 10:30:05,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193385676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:05,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:05,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:05,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764359973] [2024-11-10 10:30:05,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:05,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:05,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:06,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:06,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 224 transitions, 3922 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:06,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:06,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:06,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:06,499 INFO L124 PetriNetUnfolderBase]: 1349/2435 cut-off events. [2024-11-10 10:30:06,499 INFO L125 PetriNetUnfolderBase]: For 29766/29855 co-relation queries the response was YES. [2024-11-10 10:30:06,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16151 conditions, 2435 events. 1349/2435 cut-off events. For 29766/29855 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14347 event pairs, 526 based on Foata normal form. 31/2451 useless extension candidates. Maximal degree in co-relation 16069. Up to 1775 conditions per place. [2024-11-10 10:30:06,520 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 189 selfloop transitions, 66 changer transitions 0/268 dead transitions. [2024-11-10 10:30:06,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 268 transitions, 5025 flow [2024-11-10 10:30:06,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:30:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:30:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-11-10 10:30:06,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-11-10 10:30:06,522 INFO L175 Difference]: Start difference. First operand has 231 places, 224 transitions, 3922 flow. Second operand 9 states and 169 transitions. [2024-11-10 10:30:06,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 268 transitions, 5025 flow [2024-11-10 10:30:06,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 268 transitions, 4842 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-11-10 10:30:06,637 INFO L231 Difference]: Finished difference. Result has 220 places, 234 transitions, 4133 flow [2024-11-10 10:30:06,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4133, PETRI_PLACES=220, PETRI_TRANSITIONS=234} [2024-11-10 10:30:06,638 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 184 predicate places. [2024-11-10 10:30:06,638 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 234 transitions, 4133 flow [2024-11-10 10:30:06,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:06,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:06,638 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:06,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-10 10:30:06,638 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:06,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash -513306360, now seen corresponding path program 2 times [2024-11-10 10:30:06,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:06,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323198999] [2024-11-10 10:30:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:06,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:06,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:06,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323198999] [2024-11-10 10:30:06,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323198999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:06,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:06,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:06,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648032895] [2024-11-10 10:30:06,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:06,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:06,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:06,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:06,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:06,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 234 transitions, 4133 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:06,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:06,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:06,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:07,304 INFO L124 PetriNetUnfolderBase]: 1337/2412 cut-off events. [2024-11-10 10:30:07,304 INFO L125 PetriNetUnfolderBase]: For 29295/29393 co-relation queries the response was YES. [2024-11-10 10:30:07,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15976 conditions, 2412 events. 1337/2412 cut-off events. For 29295/29393 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14245 event pairs, 448 based on Foata normal form. 46/2441 useless extension candidates. Maximal degree in co-relation 15897. Up to 1498 conditions per place. [2024-11-10 10:30:07,327 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 181 selfloop transitions, 69 changer transitions 20/283 dead transitions. [2024-11-10 10:30:07,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 283 transitions, 4909 flow [2024-11-10 10:30:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:30:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:30:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-11-10 10:30:07,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-10 10:30:07,328 INFO L175 Difference]: Start difference. First operand has 220 places, 234 transitions, 4133 flow. Second operand 12 states and 220 transitions. [2024-11-10 10:30:07,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 283 transitions, 4909 flow [2024-11-10 10:30:07,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 283 transitions, 4803 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-10 10:30:07,450 INFO L231 Difference]: Finished difference. Result has 228 places, 227 transitions, 4024 flow [2024-11-10 10:30:07,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4024, PETRI_PLACES=228, PETRI_TRANSITIONS=227} [2024-11-10 10:30:07,451 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 192 predicate places. [2024-11-10 10:30:07,451 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 227 transitions, 4024 flow [2024-11-10 10:30:07,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:07,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:07,455 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:07,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-10 10:30:07,456 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:07,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1003276280, now seen corresponding path program 3 times [2024-11-10 10:30:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:07,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916920075] [2024-11-10 10:30:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:07,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:07,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916920075] [2024-11-10 10:30:07,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916920075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:07,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:07,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:07,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244269549] [2024-11-10 10:30:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:07,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:07,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:07,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:07,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:07,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 227 transitions, 4024 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:07,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:07,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:07,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:08,065 INFO L124 PetriNetUnfolderBase]: 1335/2405 cut-off events. [2024-11-10 10:30:08,065 INFO L125 PetriNetUnfolderBase]: For 30554/30649 co-relation queries the response was YES. [2024-11-10 10:30:08,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16145 conditions, 2405 events. 1335/2405 cut-off events. For 30554/30649 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14094 event pairs, 505 based on Foata normal form. 45/2435 useless extension candidates. Maximal degree in co-relation 16064. Up to 1738 conditions per place. [2024-11-10 10:30:08,089 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 170 selfloop transitions, 75 changer transitions 0/258 dead transitions. [2024-11-10 10:30:08,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 258 transitions, 4803 flow [2024-11-10 10:30:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:30:08,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:30:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-11-10 10:30:08,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-10 10:30:08,090 INFO L175 Difference]: Start difference. First operand has 228 places, 227 transitions, 4024 flow. Second operand 9 states and 165 transitions. [2024-11-10 10:30:08,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 258 transitions, 4803 flow [2024-11-10 10:30:08,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 258 transitions, 4649 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-11-10 10:30:08,204 INFO L231 Difference]: Finished difference. Result has 218 places, 230 transitions, 4105 flow [2024-11-10 10:30:08,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3880, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4105, PETRI_PLACES=218, PETRI_TRANSITIONS=230} [2024-11-10 10:30:08,205 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 182 predicate places. [2024-11-10 10:30:08,205 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 230 transitions, 4105 flow [2024-11-10 10:30:08,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:08,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:08,205 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:08,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-10 10:30:08,206 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:08,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash 774147454, now seen corresponding path program 4 times [2024-11-10 10:30:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:08,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441583013] [2024-11-10 10:30:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:08,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441583013] [2024-11-10 10:30:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441583013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:08,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:08,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903302800] [2024-11-10 10:30:08,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:08,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:08,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:08,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:08,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:08,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:08,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 230 transitions, 4105 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:08,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:08,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:08,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:08,813 INFO L124 PetriNetUnfolderBase]: 1328/2390 cut-off events. [2024-11-10 10:30:08,813 INFO L125 PetriNetUnfolderBase]: For 28846/28944 co-relation queries the response was YES. [2024-11-10 10:30:08,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15958 conditions, 2390 events. 1328/2390 cut-off events. For 28846/28944 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14011 event pairs, 496 based on Foata normal form. 41/2414 useless extension candidates. Maximal degree in co-relation 15882. Up to 1707 conditions per place. [2024-11-10 10:30:08,834 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 163 selfloop transitions, 73 changer transitions 9/258 dead transitions. [2024-11-10 10:30:08,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 258 transitions, 4718 flow [2024-11-10 10:30:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:30:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:30:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-11-10 10:30:08,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-11-10 10:30:08,836 INFO L175 Difference]: Start difference. First operand has 218 places, 230 transitions, 4105 flow. Second operand 11 states and 192 transitions. [2024-11-10 10:30:08,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 258 transitions, 4718 flow [2024-11-10 10:30:08,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 258 transitions, 4608 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-10 10:30:08,946 INFO L231 Difference]: Finished difference. Result has 224 places, 225 transitions, 4033 flow [2024-11-10 10:30:08,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3951, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4033, PETRI_PLACES=224, PETRI_TRANSITIONS=225} [2024-11-10 10:30:08,947 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 188 predicate places. [2024-11-10 10:30:08,947 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 225 transitions, 4033 flow [2024-11-10 10:30:08,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:08,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:08,947 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:08,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-11-10 10:30:08,948 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:08,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash 724468986, now seen corresponding path program 5 times [2024-11-10 10:30:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:08,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968423848] [2024-11-10 10:30:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:08,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:09,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:09,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968423848] [2024-11-10 10:30:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968423848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:09,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:09,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:09,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015301118] [2024-11-10 10:30:09,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:09,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:09,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:09,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:09,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 225 transitions, 4033 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:09,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:09,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:09,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:09,592 INFO L124 PetriNetUnfolderBase]: 1310/2356 cut-off events. [2024-11-10 10:30:09,593 INFO L125 PetriNetUnfolderBase]: For 29341/29439 co-relation queries the response was YES. [2024-11-10 10:30:09,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15745 conditions, 2356 events. 1310/2356 cut-off events. For 29341/29439 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13745 event pairs, 493 based on Foata normal form. 41/2380 useless extension candidates. Maximal degree in co-relation 15667. Up to 1702 conditions per place. [2024-11-10 10:30:09,612 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 159 selfloop transitions, 70 changer transitions 6/248 dead transitions. [2024-11-10 10:30:09,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 248 transitions, 4588 flow [2024-11-10 10:30:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:30:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:30:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-11-10 10:30:09,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-11-10 10:30:09,613 INFO L175 Difference]: Start difference. First operand has 224 places, 225 transitions, 4033 flow. Second operand 10 states and 174 transitions. [2024-11-10 10:30:09,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 248 transitions, 4588 flow [2024-11-10 10:30:09,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 248 transitions, 4420 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-11-10 10:30:09,710 INFO L231 Difference]: Finished difference. Result has 219 places, 221 transitions, 3911 flow [2024-11-10 10:30:09,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3911, PETRI_PLACES=219, PETRI_TRANSITIONS=221} [2024-11-10 10:30:09,711 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 183 predicate places. [2024-11-10 10:30:09,711 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 221 transitions, 3911 flow [2024-11-10 10:30:09,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:09,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:09,711 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:09,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-11-10 10:30:09,711 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:09,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1407572088, now seen corresponding path program 6 times [2024-11-10 10:30:09,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:09,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071061477] [2024-11-10 10:30:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:09,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:09,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:09,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071061477] [2024-11-10 10:30:09,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071061477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:09,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:09,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471609516] [2024-11-10 10:30:09,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:09,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:09,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:09,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:09,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:09,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 221 transitions, 3911 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:09,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:09,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:09,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:10,404 INFO L124 PetriNetUnfolderBase]: 1326/2379 cut-off events. [2024-11-10 10:30:10,405 INFO L125 PetriNetUnfolderBase]: For 29501/29599 co-relation queries the response was YES. [2024-11-10 10:30:10,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15869 conditions, 2379 events. 1326/2379 cut-off events. For 29501/29599 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13901 event pairs, 501 based on Foata normal form. 28/2390 useless extension candidates. Maximal degree in co-relation 15795. Up to 1714 conditions per place. [2024-11-10 10:30:10,421 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 168 selfloop transitions, 63 changer transitions 0/244 dead transitions. [2024-11-10 10:30:10,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 244 transitions, 4607 flow [2024-11-10 10:30:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:30:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:30:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-11-10 10:30:10,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-10 10:30:10,422 INFO L175 Difference]: Start difference. First operand has 219 places, 221 transitions, 3911 flow. Second operand 9 states and 162 transitions. [2024-11-10 10:30:10,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 244 transitions, 4607 flow [2024-11-10 10:30:10,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 244 transitions, 4365 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-10 10:30:10,511 INFO L231 Difference]: Finished difference. Result has 212 places, 224 transitions, 3891 flow [2024-11-10 10:30:10,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3891, PETRI_PLACES=212, PETRI_TRANSITIONS=224} [2024-11-10 10:30:10,511 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 176 predicate places. [2024-11-10 10:30:10,512 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 224 transitions, 3891 flow [2024-11-10 10:30:10,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:10,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:10,512 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:10,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-11-10 10:30:10,512 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:10,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1173306184, now seen corresponding path program 7 times [2024-11-10 10:30:10,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:10,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636615901] [2024-11-10 10:30:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:10,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:10,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636615901] [2024-11-10 10:30:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636615901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:10,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827282920] [2024-11-10 10:30:10,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:10,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:10,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:10,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 224 transitions, 3891 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:10,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:10,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:10,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:11,126 INFO L124 PetriNetUnfolderBase]: 1314/2377 cut-off events. [2024-11-10 10:30:11,127 INFO L125 PetriNetUnfolderBase]: For 28043/28138 co-relation queries the response was YES. [2024-11-10 10:30:11,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15522 conditions, 2377 events. 1314/2377 cut-off events. For 28043/28138 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13943 event pairs, 508 based on Foata normal form. 27/2389 useless extension candidates. Maximal degree in co-relation 15448. Up to 1714 conditions per place. [2024-11-10 10:30:11,148 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 168 selfloop transitions, 63 changer transitions 0/244 dead transitions. [2024-11-10 10:30:11,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 244 transitions, 4501 flow [2024-11-10 10:30:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:30:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:30:11,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-11-10 10:30:11,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-11-10 10:30:11,149 INFO L175 Difference]: Start difference. First operand has 212 places, 224 transitions, 3891 flow. Second operand 9 states and 163 transitions. [2024-11-10 10:30:11,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 244 transitions, 4501 flow [2024-11-10 10:30:11,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 244 transitions, 4406 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-10 10:30:11,255 INFO L231 Difference]: Finished difference. Result has 215 places, 224 transitions, 3932 flow [2024-11-10 10:30:11,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3796, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3932, PETRI_PLACES=215, PETRI_TRANSITIONS=224} [2024-11-10 10:30:11,257 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 179 predicate places. [2024-11-10 10:30:11,257 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 224 transitions, 3932 flow [2024-11-10 10:30:11,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:11,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:11,257 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:11,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-11-10 10:30:11,257 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:11,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1733086548, now seen corresponding path program 8 times [2024-11-10 10:30:11,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:11,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979484726] [2024-11-10 10:30:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:11,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:30:11,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:11,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979484726] [2024-11-10 10:30:11,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979484726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:11,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:11,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:30:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722157979] [2024-11-10 10:30:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:11,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:30:11,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:30:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:30:11,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:30:11,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 224 transitions, 3932 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:11,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:11,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:30:11,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:11,966 INFO L124 PetriNetUnfolderBase]: 1307/2362 cut-off events. [2024-11-10 10:30:11,967 INFO L125 PetriNetUnfolderBase]: For 28348/28442 co-relation queries the response was YES. [2024-11-10 10:30:11,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15441 conditions, 2362 events. 1307/2362 cut-off events. For 28348/28442 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13869 event pairs, 493 based on Foata normal form. 21/2366 useless extension candidates. Maximal degree in co-relation 15366. Up to 1683 conditions per place. [2024-11-10 10:30:11,992 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 162 selfloop transitions, 59 changer transitions 9/243 dead transitions. [2024-11-10 10:30:11,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 243 transitions, 4451 flow [2024-11-10 10:30:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:30:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:30:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-11-10 10:30:11,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-11-10 10:30:11,993 INFO L175 Difference]: Start difference. First operand has 215 places, 224 transitions, 3932 flow. Second operand 11 states and 187 transitions. [2024-11-10 10:30:11,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 243 transitions, 4451 flow [2024-11-10 10:30:12,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 243 transitions, 4369 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-10 10:30:12,109 INFO L231 Difference]: Finished difference. Result has 219 places, 218 transitions, 3854 flow [2024-11-10 10:30:12,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3807, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3854, PETRI_PLACES=219, PETRI_TRANSITIONS=218} [2024-11-10 10:30:12,109 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 183 predicate places. [2024-11-10 10:30:12,110 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 218 transitions, 3854 flow [2024-11-10 10:30:12,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:12,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:12,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:12,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-11-10 10:30:12,110 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:12,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:12,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1249822752, now seen corresponding path program 9 times [2024-11-10 10:30:12,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:12,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187384051] [2024-11-10 10:30:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:12,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat