./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:24:47,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:24:47,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:24:47,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:24:47,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:24:47,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:24:47,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:24:47,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:24:47,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:24:47,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:24:47,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:24:47,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:24:47,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:24:47,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:24:47,176 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:24:47,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:24:47,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:24:47,179 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:24:47,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:24:47,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:24:47,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:24:47,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:24:47,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:24:47,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:24:47,180 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:24:47,180 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:24:47,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:24:47,181 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:24:47,181 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:24:47,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:24:47,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:24:47,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:24:47,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:24:47,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:24:47,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:24:47,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:24:47,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:24:47,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:24:47,183 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:24:47,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:24:47,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:24:47,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:24:47,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-11-16 19:24:47,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:24:47,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:24:47,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:24:47,403 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:24:47,403 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:24:47,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-16 19:24:48,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:24:48,711 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:24:48,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-16 19:24:48,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294d962a2/4781f4ca1217490398ab63894bb3c014/FLAGa494e29e9 [2024-11-16 19:24:48,730 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294d962a2/4781f4ca1217490398ab63894bb3c014 [2024-11-16 19:24:48,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:24:48,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:24:48,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:24:48,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:24:48,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:24:48,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:24:48" (1/1) ... [2024-11-16 19:24:48,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb21c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:48, skipping insertion in model container [2024-11-16 19:24:48,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:24:48" (1/1) ... [2024-11-16 19:24:48,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:24:48,962 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-nzb-file-subst.wvr.c[6540,6553] [2024-11-16 19:24:48,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:24:48,975 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:24:49,004 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-nzb-file-subst.wvr.c[6540,6553] [2024-11-16 19:24:49,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:24:49,022 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:24:49,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49 WrapperNode [2024-11-16 19:24:49,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:24:49,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:24:49,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:24:49,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:24:49,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,070 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 597 [2024-11-16 19:24:49,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:24:49,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:24:49,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:24:49,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:24:49,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,109 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-16 19:24:49,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,132 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:24:49,148 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:24:49,148 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:24:49,148 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:24:49,149 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (1/1) ... [2024-11-16 19:24:49,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:24:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:24:49,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:24:49,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:24:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:24:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:24:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:24:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:24:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:24:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:24:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:24:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:24:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:24:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:24:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:24:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:24:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:24:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:24:49,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:24:49,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:24:49,223 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:24:49,329 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:24:49,331 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:24:49,917 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:24:49,917 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:24:50,510 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:24:50,511 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:24:50,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:24:50 BoogieIcfgContainer [2024-11-16 19:24:50,511 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:24:50,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:24:50,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:24:50,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:24:50,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:24:48" (1/3) ... [2024-11-16 19:24:50,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17493c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:24:50, skipping insertion in model container [2024-11-16 19:24:50,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:49" (2/3) ... [2024-11-16 19:24:50,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17493c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:24:50, skipping insertion in model container [2024-11-16 19:24:50,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:24:50" (3/3) ... [2024-11-16 19:24:50,520 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-11-16 19:24:50,533 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:24:50,534 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:24:50,534 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:24:50,626 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:24:50,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 58 transitions, 137 flow [2024-11-16 19:24:50,701 INFO L124 PetriNetUnfolderBase]: 15/55 cut-off events. [2024-11-16 19:24:50,702 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:24:50,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 15/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-11-16 19:24:50,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 58 transitions, 137 flow [2024-11-16 19:24:50,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 54 transitions, 126 flow [2024-11-16 19:24:50,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:24:50,724 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;@765c792e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:24:50,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:24:50,750 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:24:50,750 INFO L124 PetriNetUnfolderBase]: 15/53 cut-off events. [2024-11-16 19:24:50,750 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:24:50,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:50,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:50,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:24:50,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash -228536793, now seen corresponding path program 1 times [2024-11-16 19:24:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704834979] [2024-11-16 19:24:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:50,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:24:50,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704834979] [2024-11-16 19:24:50,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704834979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:50,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:50,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:24:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857124452] [2024-11-16 19:24:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:50,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:24:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:24:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:24:51,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:24:51,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:51,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:51,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:24:51,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:51,620 INFO L124 PetriNetUnfolderBase]: 2373/3240 cut-off events. [2024-11-16 19:24:51,620 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-11-16 19:24:51,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3240 events. 2373/3240 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12295 event pairs, 1692 based on Foata normal form. 3/2565 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2024-11-16 19:24:51,638 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 41 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-11-16 19:24:51,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 196 flow [2024-11-16 19:24:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:24:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:24:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 67 transitions. [2024-11-16 19:24:51,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2024-11-16 19:24:51,648 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 126 flow. Second operand 2 states and 67 transitions. [2024-11-16 19:24:51,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 196 flow [2024-11-16 19:24:51,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:24:51,654 INFO L231 Difference]: Finished difference. Result has 44 places, 48 transitions, 102 flow [2024-11-16 19:24:51,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2024-11-16 19:24:51,660 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2024-11-16 19:24:51,660 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 102 flow [2024-11-16 19:24:51,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:51,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:51,661 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:51,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:24:51,661 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:24:51,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:51,662 INFO L85 PathProgramCache]: Analyzing trace with hash 667890922, now seen corresponding path program 1 times [2024-11-16 19:24:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:51,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466037978] [2024-11-16 19:24:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:51,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:24:51,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:51,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466037978] [2024-11-16 19:24:51,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466037978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:51,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:51,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:24:51,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139341855] [2024-11-16 19:24:51,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:51,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:24:51,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:24:51,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:24:51,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 58 [2024-11-16 19:24:51,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:51,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:51,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 58 [2024-11-16 19:24:51,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:52,310 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-11-16 19:24:52,311 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-16 19:24:52,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 3246 events. 2373/3246 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12288 event pairs, 1692 based on Foata normal form. 0/2565 useless extension candidates. Maximal degree in co-relation 6542. Up to 3237 conditions per place. [2024-11-16 19:24:52,325 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 41 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-11-16 19:24:52,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 202 flow [2024-11-16 19:24:52,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:24:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:24:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-16 19:24:52,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40804597701149425 [2024-11-16 19:24:52,328 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 102 flow. Second operand 3 states and 71 transitions. [2024-11-16 19:24:52,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 202 flow [2024-11-16 19:24:52,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:24:52,332 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 138 flow [2024-11-16 19:24:52,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2024-11-16 19:24:52,333 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-11-16 19:24:52,333 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 138 flow [2024-11-16 19:24:52,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:52,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:52,333 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, 1] [2024-11-16 19:24:52,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:24:52,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:24:52,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash -176990546, now seen corresponding path program 1 times [2024-11-16 19:24:52,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:52,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878190983] [2024-11-16 19:24:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:52,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:24:52,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878190983] [2024-11-16 19:24:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878190983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:24:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61166482] [2024-11-16 19:24:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:52,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:24:52,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:24:52,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:24:52,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:24:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:52,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:24:52,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:24:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:24:52,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:24:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:24:52,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61166482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:24:52,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:24:52,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-16 19:24:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933486345] [2024-11-16 19:24:52,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:24:52,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:24:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:52,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:24:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:24:52,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 58 [2024-11-16 19:24:52,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 138 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:52,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:52,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 58 [2024-11-16 19:24:52,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:53,316 INFO L124 PetriNetUnfolderBase]: 2373/3264 cut-off events. [2024-11-16 19:24:53,316 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-16 19:24:53,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6598 conditions, 3264 events. 2373/3264 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12285 event pairs, 1692 based on Foata normal form. 0/2583 useless extension candidates. Maximal degree in co-relation 6593. Up to 3237 conditions per place. [2024-11-16 19:24:53,327 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 41 selfloop transitions, 15 changer transitions 0/60 dead transitions. [2024-11-16 19:24:53,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 286 flow [2024-11-16 19:24:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:24:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:24:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-11-16 19:24:53,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3074712643678161 [2024-11-16 19:24:53,328 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 138 flow. Second operand 6 states and 107 transitions. [2024-11-16 19:24:53,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 286 flow [2024-11-16 19:24:53,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:24:53,330 INFO L231 Difference]: Finished difference. Result has 54 places, 60 transitions, 240 flow [2024-11-16 19:24:53,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=54, PETRI_TRANSITIONS=60} [2024-11-16 19:24:53,330 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-11-16 19:24:53,330 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 60 transitions, 240 flow [2024-11-16 19:24:53,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:53,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:53,331 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:53,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 19:24:53,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:24:53,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:24:53,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1014346246, now seen corresponding path program 2 times [2024-11-16 19:24:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321989246] [2024-11-16 19:24:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 19:24:53,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:53,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321989246] [2024-11-16 19:24:53,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321989246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:24:53,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511961175] [2024-11-16 19:24:53,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:24:53,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:24:53,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:24:53,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:24:53,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:24:53,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:24:53,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:24:53,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:24:53,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:24:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 19:24:55,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:24:55,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511961175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:55,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:24:55,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-16 19:24:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342139450] [2024-11-16 19:24:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:55,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:24:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:24:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:24:55,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:24:55,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:55,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:55,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:24:55,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:56,246 INFO L124 PetriNetUnfolderBase]: 3141/4430 cut-off events. [2024-11-16 19:24:56,246 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-16 19:24:56,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8981 conditions, 4430 events. 3141/4430 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19279 event pairs, 1692 based on Foata normal form. 1/3581 useless extension candidates. Maximal degree in co-relation 8973. Up to 3132 conditions per place. [2024-11-16 19:24:56,261 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 93 selfloop transitions, 2 changer transitions 8/110 dead transitions. [2024-11-16 19:24:56,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 110 transitions, 558 flow [2024-11-16 19:24:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:24:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:24:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-11-16 19:24:56,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4896551724137931 [2024-11-16 19:24:56,263 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 240 flow. Second operand 5 states and 142 transitions. [2024-11-16 19:24:56,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 110 transitions, 558 flow [2024-11-16 19:24:56,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 534 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-16 19:24:56,266 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 231 flow [2024-11-16 19:24:56,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-11-16 19:24:56,267 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2024-11-16 19:24:56,268 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 231 flow [2024-11-16 19:24:56,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:56,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:56,268 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:56,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:24:56,468 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,SelfDestructingSolverStorable3 [2024-11-16 19:24:56,469 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:24:56,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -623720194, now seen corresponding path program 3 times [2024-11-16 19:24:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169177922] [2024-11-16 19:24:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 19:24:56,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:56,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169177922] [2024-11-16 19:24:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169177922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:24:56,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422578081] [2024-11-16 19:24:56,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:24:56,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:24:56,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:24:56,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:24:56,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:24:56,802 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:24:56,803 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:24:56,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:24:56,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:24:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 19:24:57,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:24:57,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422578081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:57,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:24:57,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-16 19:24:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241994007] [2024-11-16 19:24:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:57,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:24:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:24:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:24:57,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:24:57,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:57,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:57,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:24:57,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:59,092 INFO L124 PetriNetUnfolderBase]: 3904/5619 cut-off events. [2024-11-16 19:24:59,092 INFO L125 PetriNetUnfolderBase]: For 972/972 co-relation queries the response was YES. [2024-11-16 19:24:59,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11907 conditions, 5619 events. 3904/5619 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26247 event pairs, 2311 based on Foata normal form. 1/5113 useless extension candidates. Maximal degree in co-relation 11895. Up to 3990 conditions per place. [2024-11-16 19:24:59,116 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 89 selfloop transitions, 3 changer transitions 8/107 dead transitions. [2024-11-16 19:24:59,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 107 transitions, 545 flow [2024-11-16 19:24:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:24:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:24:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-11-16 19:24:59,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47586206896551725 [2024-11-16 19:24:59,118 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 231 flow. Second operand 5 states and 138 transitions. [2024-11-16 19:24:59,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 107 transitions, 545 flow [2024-11-16 19:24:59,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 107 transitions, 536 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-16 19:24:59,124 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 248 flow [2024-11-16 19:24:59,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-16 19:24:59,126 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 15 predicate places. [2024-11-16 19:24:59,126 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 248 flow [2024-11-16 19:24:59,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:59,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:59,128 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:59,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:24:59,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:24:59,329 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:24:59,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1422820956, now seen corresponding path program 4 times [2024-11-16 19:24:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:59,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952597672] [2024-11-16 19:24:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:59,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 19:24:59,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:59,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952597672] [2024-11-16 19:24:59,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952597672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:24:59,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252423024] [2024-11-16 19:24:59,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:24:59,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:24:59,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:24:59,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:24:59,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:24:59,684 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:24:59,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:24:59,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:24:59,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:24:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 19:24:59,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:24:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 19:24:59,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252423024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:24:59,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:24:59,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-16 19:24:59,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274235333] [2024-11-16 19:24:59,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:24:59,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:24:59,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:24:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:24:59,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 58 [2024-11-16 19:24:59,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 248 flow. Second operand has 17 states, 17 states have (on average 9.764705882352942) internal successors, (166), 17 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:59,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:59,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 58 [2024-11-16 19:24:59,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:00,474 INFO L124 PetriNetUnfolderBase]: 3875/5573 cut-off events. [2024-11-16 19:25:00,474 INFO L125 PetriNetUnfolderBase]: For 2223/2223 co-relation queries the response was YES. [2024-11-16 19:25:00,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12345 conditions, 5573 events. 3875/5573 cut-off events. For 2223/2223 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 25559 event pairs, 3170 based on Foata normal form. 3/5069 useless extension candidates. Maximal degree in co-relation 12331. Up to 5534 conditions per place. [2024-11-16 19:25:00,493 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 43 selfloop transitions, 18 changer transitions 0/65 dead transitions. [2024-11-16 19:25:00,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 388 flow [2024-11-16 19:25:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-11-16 19:25:00,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2733990147783251 [2024-11-16 19:25:00,495 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 248 flow. Second operand 7 states and 111 transitions. [2024-11-16 19:25:00,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 388 flow [2024-11-16 19:25:00,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 382 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:00,501 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 314 flow [2024-11-16 19:25:00,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=314, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-16 19:25:00,503 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2024-11-16 19:25:00,503 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 314 flow [2024-11-16 19:25:00,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.764705882352942) internal successors, (166), 17 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:00,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:00,504 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:00,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:00,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:00,704 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:00,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash -253622868, now seen corresponding path program 5 times [2024-11-16 19:25:00,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:00,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105203127] [2024-11-16 19:25:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:00,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 19:25:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105203127] [2024-11-16 19:25:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105203127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:02,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225115559] [2024-11-16 19:25:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:02,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:02,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:25:02,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:02,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:02,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:25:02,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:04,056 INFO L124 PetriNetUnfolderBase]: 8546/12305 cut-off events. [2024-11-16 19:25:04,056 INFO L125 PetriNetUnfolderBase]: For 2852/2852 co-relation queries the response was YES. [2024-11-16 19:25:04,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26518 conditions, 12305 events. 8546/12305 cut-off events. For 2852/2852 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 66633 event pairs, 2274 based on Foata normal form. 1/11066 useless extension candidates. Maximal degree in co-relation 26504. Up to 5462 conditions per place. [2024-11-16 19:25:04,094 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 139 selfloop transitions, 29 changer transitions 3/178 dead transitions. [2024-11-16 19:25:04,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 178 transitions, 951 flow [2024-11-16 19:25:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-11-16 19:25:04,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5467980295566502 [2024-11-16 19:25:04,096 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 314 flow. Second operand 7 states and 222 transitions. [2024-11-16 19:25:04,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 178 transitions, 951 flow [2024-11-16 19:25:04,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 178 transitions, 909 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-16 19:25:04,102 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 517 flow [2024-11-16 19:25:04,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2024-11-16 19:25:04,102 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2024-11-16 19:25:04,103 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 517 flow [2024-11-16 19:25:04,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:04,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:04,103 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:04,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:25:04,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:04,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash 600724584, now seen corresponding path program 6 times [2024-11-16 19:25:04,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:04,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147693790] [2024-11-16 19:25:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 19:25:05,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:05,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147693790] [2024-11-16 19:25:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147693790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:05,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:05,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:05,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979369674] [2024-11-16 19:25:05,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:05,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:05,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:05,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:05,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:25:05,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 517 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:05,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:05,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:25:05,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:07,661 INFO L124 PetriNetUnfolderBase]: 11301/16164 cut-off events. [2024-11-16 19:25:07,661 INFO L125 PetriNetUnfolderBase]: For 12807/12807 co-relation queries the response was YES. [2024-11-16 19:25:07,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41908 conditions, 16164 events. 11301/16164 cut-off events. For 12807/12807 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 89518 event pairs, 4506 based on Foata normal form. 1/15707 useless extension candidates. Maximal degree in co-relation 41890. Up to 8249 conditions per place. [2024-11-16 19:25:07,737 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 136 selfloop transitions, 45 changer transitions 2/190 dead transitions. [2024-11-16 19:25:07,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 190 transitions, 1262 flow [2024-11-16 19:25:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-16 19:25:07,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5551724137931034 [2024-11-16 19:25:07,739 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 517 flow. Second operand 5 states and 161 transitions. [2024-11-16 19:25:07,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 190 transitions, 1262 flow [2024-11-16 19:25:07,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 190 transitions, 1258 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:07,775 INFO L231 Difference]: Finished difference. Result has 82 places, 129 transitions, 946 flow [2024-11-16 19:25:07,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=946, PETRI_PLACES=82, PETRI_TRANSITIONS=129} [2024-11-16 19:25:07,776 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 33 predicate places. [2024-11-16 19:25:07,777 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 129 transitions, 946 flow [2024-11-16 19:25:07,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:07,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:07,777 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:07,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:25:07,778 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:07,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:07,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1353869160, now seen corresponding path program 7 times [2024-11-16 19:25:07,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:07,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781742246] [2024-11-16 19:25:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:07,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 19:25:09,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:09,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781742246] [2024-11-16 19:25:09,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781742246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:09,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:09,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:09,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273625897] [2024-11-16 19:25:09,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:09,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:09,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:09,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:09,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:09,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:25:09,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 129 transitions, 946 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:09,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:09,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:25:09,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:11,404 INFO L124 PetriNetUnfolderBase]: 11878/17054 cut-off events. [2024-11-16 19:25:11,404 INFO L125 PetriNetUnfolderBase]: For 28125/28125 co-relation queries the response was YES. [2024-11-16 19:25:11,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49606 conditions, 17054 events. 11878/17054 cut-off events. For 28125/28125 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 96592 event pairs, 5838 based on Foata normal form. 1/16597 useless extension candidates. Maximal degree in co-relation 49584. Up to 11067 conditions per place. [2024-11-16 19:25:11,485 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 170 selfloop transitions, 39 changer transitions 2/218 dead transitions. [2024-11-16 19:25:11,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 218 transitions, 1789 flow [2024-11-16 19:25:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-11-16 19:25:11,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-16 19:25:11,488 INFO L175 Difference]: Start difference. First operand has 82 places, 129 transitions, 946 flow. Second operand 5 states and 165 transitions. [2024-11-16 19:25:11,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 218 transitions, 1789 flow [2024-11-16 19:25:11,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 218 transitions, 1779 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:11,565 INFO L231 Difference]: Finished difference. Result has 89 places, 152 transitions, 1319 flow [2024-11-16 19:25:11,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1319, PETRI_PLACES=89, PETRI_TRANSITIONS=152} [2024-11-16 19:25:11,566 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-11-16 19:25:11,567 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 152 transitions, 1319 flow [2024-11-16 19:25:11,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:11,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:11,567 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:11,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 19:25:11,568 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:11,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1066735252, now seen corresponding path program 8 times [2024-11-16 19:25:11,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:11,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600843003] [2024-11-16 19:25:11,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:11,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 19:25:12,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:12,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600843003] [2024-11-16 19:25:12,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600843003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:12,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:12,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054997225] [2024-11-16 19:25:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:12,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:12,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:25:12,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 152 transitions, 1319 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:12,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:12,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:25:12,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:16,279 INFO L124 PetriNetUnfolderBase]: 14633/20945 cut-off events. [2024-11-16 19:25:16,279 INFO L125 PetriNetUnfolderBase]: For 49315/49315 co-relation queries the response was YES. [2024-11-16 19:25:16,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65170 conditions, 20945 events. 14633/20945 cut-off events. For 49315/49315 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 121130 event pairs, 5883 based on Foata normal form. 1/20388 useless extension candidates. Maximal degree in co-relation 65144. Up to 9790 conditions per place. [2024-11-16 19:25:16,361 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 182 selfloop transitions, 50 changer transitions 2/241 dead transitions. [2024-11-16 19:25:16,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 241 transitions, 2304 flow [2024-11-16 19:25:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-16 19:25:16,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5482758620689655 [2024-11-16 19:25:16,363 INFO L175 Difference]: Start difference. First operand has 89 places, 152 transitions, 1319 flow. Second operand 5 states and 159 transitions. [2024-11-16 19:25:16,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 241 transitions, 2304 flow [2024-11-16 19:25:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 241 transitions, 2296 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:16,488 INFO L231 Difference]: Finished difference. Result has 97 places, 180 transitions, 1831 flow [2024-11-16 19:25:16,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1831, PETRI_PLACES=97, PETRI_TRANSITIONS=180} [2024-11-16 19:25:16,489 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 48 predicate places. [2024-11-16 19:25:16,489 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 180 transitions, 1831 flow [2024-11-16 19:25:16,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:16,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:16,490 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:16,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 19:25:16,490 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:16,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash -582050187, now seen corresponding path program 1 times [2024-11-16 19:25:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288695022] [2024-11-16 19:25:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:16,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 19:25:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:16,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288695022] [2024-11-16 19:25:16,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288695022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:16,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:16,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:16,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585747358] [2024-11-16 19:25:16,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:16,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:16,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:16,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:25:16,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 180 transitions, 1831 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2024-11-16 19:25:16,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:16,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:25:16,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:20,683 INFO L124 PetriNetUnfolderBase]: 22256/31744 cut-off events. [2024-11-16 19:25:20,683 INFO L125 PetriNetUnfolderBase]: For 97524/97524 co-relation queries the response was YES. [2024-11-16 19:25:20,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103327 conditions, 31744 events. 22256/31744 cut-off events. For 97524/97524 co-relation queries the response was YES. Maximal size of possible extension queue 1161. Compared 194381 event pairs, 4042 based on Foata normal form. 3/30689 useless extension candidates. Maximal degree in co-relation 103297. Up to 11312 conditions per place. [2024-11-16 19:25:20,938 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 247 selfloop transitions, 42 changer transitions 57/353 dead transitions. [2024-11-16 19:25:20,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 353 transitions, 3905 flow [2024-11-16 19:25:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-11-16 19:25:20,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-11-16 19:25:20,939 INFO L175 Difference]: Start difference. First operand has 97 places, 180 transitions, 1831 flow. Second operand 6 states and 200 transitions. [2024-11-16 19:25:20,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 353 transitions, 3905 flow [2024-11-16 19:25:21,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 353 transitions, 3859 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:21,283 INFO L231 Difference]: Finished difference. Result has 106 places, 184 transitions, 1960 flow [2024-11-16 19:25:21,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1960, PETRI_PLACES=106, PETRI_TRANSITIONS=184} [2024-11-16 19:25:21,284 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 57 predicate places. [2024-11-16 19:25:21,284 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 184 transitions, 1960 flow [2024-11-16 19:25:21,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2024-11-16 19:25:21,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:21,285 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:21,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 19:25:21,285 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:21,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:21,285 INFO L85 PathProgramCache]: Analyzing trace with hash -365223855, now seen corresponding path program 1 times [2024-11-16 19:25:21,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:21,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357185516] [2024-11-16 19:25:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:21,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 19:25:21,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357185516] [2024-11-16 19:25:21,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357185516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:21,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:21,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154116862] [2024-11-16 19:25:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:21,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:21,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:21,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:25:21,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 184 transitions, 1960 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:21,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:21,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:25:21,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:26,436 INFO L124 PetriNetUnfolderBase]: 19804/28268 cut-off events. [2024-11-16 19:25:26,436 INFO L125 PetriNetUnfolderBase]: For 94593/94593 co-relation queries the response was YES. [2024-11-16 19:25:26,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95447 conditions, 28268 events. 19804/28268 cut-off events. For 94593/94593 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 170568 event pairs, 11240 based on Foata normal form. 4/28272 useless extension candidates. Maximal degree in co-relation 95412. Up to 21547 conditions per place. [2024-11-16 19:25:26,566 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 182 selfloop transitions, 7 changer transitions 43/239 dead transitions. [2024-11-16 19:25:26,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 239 transitions, 2750 flow [2024-11-16 19:25:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:25:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:25:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-16 19:25:26,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2024-11-16 19:25:26,567 INFO L175 Difference]: Start difference. First operand has 106 places, 184 transitions, 1960 flow. Second operand 4 states and 126 transitions. [2024-11-16 19:25:26,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 239 transitions, 2750 flow [2024-11-16 19:25:26,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 239 transitions, 2678 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:26,873 INFO L231 Difference]: Finished difference. Result has 106 places, 168 transitions, 1670 flow [2024-11-16 19:25:26,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1670, PETRI_PLACES=106, PETRI_TRANSITIONS=168} [2024-11-16 19:25:26,873 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 57 predicate places. [2024-11-16 19:25:26,874 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 168 transitions, 1670 flow [2024-11-16 19:25:26,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:26,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:26,874 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:26,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 19:25:26,874 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:26,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash -870001133, now seen corresponding path program 2 times [2024-11-16 19:25:26,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:26,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187519147] [2024-11-16 19:25:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:26,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 19:25:27,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187519147] [2024-11-16 19:25:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187519147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:27,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:27,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097005065] [2024-11-16 19:25:27,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:27,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:27,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:27,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:27,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:25:27,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 168 transitions, 1670 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2024-11-16 19:25:27,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:27,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:25:27,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:31,447 INFO L124 PetriNetUnfolderBase]: 19385/27538 cut-off events. [2024-11-16 19:25:31,448 INFO L125 PetriNetUnfolderBase]: For 80760/80760 co-relation queries the response was YES. [2024-11-16 19:25:31,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90258 conditions, 27538 events. 19385/27538 cut-off events. For 80760/80760 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 163720 event pairs, 6009 based on Foata normal form. 1/27539 useless extension candidates. Maximal degree in co-relation 90224. Up to 12497 conditions per place. [2024-11-16 19:25:31,580 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 219 selfloop transitions, 50 changer transitions 8/284 dead transitions. [2024-11-16 19:25:31,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 284 transitions, 2992 flow [2024-11-16 19:25:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:31,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-11-16 19:25:31,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5793103448275863 [2024-11-16 19:25:31,581 INFO L175 Difference]: Start difference. First operand has 106 places, 168 transitions, 1670 flow. Second operand 5 states and 168 transitions. [2024-11-16 19:25:31,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 284 transitions, 2992 flow [2024-11-16 19:25:31,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 284 transitions, 2902 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:31,731 INFO L231 Difference]: Finished difference. Result has 108 places, 185 transitions, 1987 flow [2024-11-16 19:25:31,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1987, PETRI_PLACES=108, PETRI_TRANSITIONS=185} [2024-11-16 19:25:31,732 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 59 predicate places. [2024-11-16 19:25:31,732 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 185 transitions, 1987 flow [2024-11-16 19:25:31,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2024-11-16 19:25:31,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:31,732 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:31,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 19:25:31,733 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:25:31,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1163954365, now seen corresponding path program 3 times [2024-11-16 19:25:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:31,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445661123] [2024-11-16 19:25:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 19:25:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445661123] [2024-11-16 19:25:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445661123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:31,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206647296] [2024-11-16 19:25:31,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:31,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:31,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2024-11-16 19:25:31,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 185 transitions, 1987 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2024-11-16 19:25:31,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:31,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2024-11-16 19:25:31,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand