./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-poker-hand-symm.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-poker-hand-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:24:59,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:24:59,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:24:59,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:24:59,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:24:59,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:24:59,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:24:59,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:24:59,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:24:59,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:24:59,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:24:59,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:24:59,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:24:59,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:24:59,524 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:24:59,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:24:59,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:24:59,525 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:24:59,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:24:59,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:24:59,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:24:59,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:24:59,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:24:59,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:24:59,532 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:24:59,532 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:24:59,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:24:59,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:24:59,533 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:24:59,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:24:59,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:24:59,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:24:59,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:24:59,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:24:59,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:24:59,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:24:59,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:24:59,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:24:59,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:24:59,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:24:59,537 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:24:59,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:24:59,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2024-11-16 19:24:59,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:24:59,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:24:59,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:24:59,846 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:24:59,847 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:24:59,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-16 19:25:01,341 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:25:01,572 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:25:01,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-16 19:25:01,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c863dd00a/35c216d20bd247c08c4e8bc2d4dbf597/FLAGa2ba09807 [2024-11-16 19:25:01,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c863dd00a/35c216d20bd247c08c4e8bc2d4dbf597 [2024-11-16 19:25:01,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:25:01,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:25:01,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:25:01,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:25:01,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:25:01,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:01" (1/1) ... [2024-11-16 19:25:01,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38eb504c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:01, skipping insertion in model container [2024-11-16 19:25:01,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:01" (1/1) ... [2024-11-16 19:25:01,961 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:25:02,285 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-poker-hand-symm.wvr.c[12847,12860] [2024-11-16 19:25:02,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:25:02,310 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:25:02,371 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-poker-hand-symm.wvr.c[12847,12860] [2024-11-16 19:25:02,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:25:02,394 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:25:02,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02 WrapperNode [2024-11-16 19:25:02,395 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:25:02,396 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:25:02,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:25:02,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:25:02,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,504 INFO L138 Inliner]: procedures = 24, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1547 [2024-11-16 19:25:02,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:25:02,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:25:02,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:25:02,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:25:02,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,532 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,570 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-11-16 19:25:02,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,626 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:25:02,650 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:25:02,651 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:25:02,651 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:25:02,652 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (1/1) ... [2024-11-16 19:25:02,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:25:02,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:02,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:25:02,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:25:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:25:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:25:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:25:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:25:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:25:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:25:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:25:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:25:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:25:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:25:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:25:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:25:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:25:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:25:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:25:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:25:02,758 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:25:02,964 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:25:02,966 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:25:04,672 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:25:04,672 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:25:06,294 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:25:06,295 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:25:06,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:06 BoogieIcfgContainer [2024-11-16 19:25:06,296 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:25:06,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:25:06,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:25:06,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:25:06,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:25:01" (1/3) ... [2024-11-16 19:25:06,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5762b574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:06, skipping insertion in model container [2024-11-16 19:25:06,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:02" (2/3) ... [2024-11-16 19:25:06,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5762b574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:06, skipping insertion in model container [2024-11-16 19:25:06,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:06" (3/3) ... [2024-11-16 19:25:06,308 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-11-16 19:25:06,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:25:06,325 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:25:06,325 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:25:06,743 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:25:06,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 118 transitions, 250 flow [2024-11-16 19:25:06,874 INFO L124 PetriNetUnfolderBase]: 36/116 cut-off events. [2024-11-16 19:25:06,875 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:25:06,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 116 events. 36/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 259 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 78. Up to 7 conditions per place. [2024-11-16 19:25:06,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 118 transitions, 250 flow [2024-11-16 19:25:06,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 115 transitions, 242 flow [2024-11-16 19:25:06,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:25:06,907 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;@26c8462d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:25:06,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 19:25:06,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:25:06,977 INFO L124 PetriNetUnfolderBase]: 36/114 cut-off events. [2024-11-16 19:25:06,977 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:25:06,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:06,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:06,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:06,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:06,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1274304882, now seen corresponding path program 1 times [2024-11-16 19:25:06,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:06,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848127379] [2024-11-16 19:25:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:07,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:07,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848127379] [2024-11-16 19:25:07,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848127379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:07,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:07,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:25:07,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114057739] [2024-11-16 19:25:07,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:07,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:25:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:25:07,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:25:07,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:07,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 115 transitions, 242 flow. Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 19:25:07,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:07,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:07,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:08,896 INFO L124 PetriNetUnfolderBase]: 2502/3754 cut-off events. [2024-11-16 19:25:08,896 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-16 19:25:08,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7570 conditions, 3754 events. 2502/3754 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17730 event pairs, 1702 based on Foata normal form. 8/2970 useless extension candidates. Maximal degree in co-relation 7372. Up to 3738 conditions per place. [2024-11-16 19:25:08,922 INFO L140 encePairwiseOnDemand]: 106/118 looper letters, 86 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2024-11-16 19:25:08,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 103 transitions, 390 flow [2024-11-16 19:25:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:25:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:25:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 136 transitions. [2024-11-16 19:25:08,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-11-16 19:25:08,939 INFO L175 Difference]: Start difference. First operand has 86 places, 115 transitions, 242 flow. Second operand 2 states and 136 transitions. [2024-11-16 19:25:08,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 103 transitions, 390 flow [2024-11-16 19:25:08,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:08,948 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 210 flow [2024-11-16 19:25:08,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=210, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2024-11-16 19:25:08,954 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2024-11-16 19:25:08,954 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 210 flow [2024-11-16 19:25:08,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 19:25:08,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:08,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:08,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:25:08,956 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:08,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2103938680, now seen corresponding path program 1 times [2024-11-16 19:25:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608033943] [2024-11-16 19:25:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:08,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:09,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:09,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608033943] [2024-11-16 19:25:09,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608033943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:09,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:09,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:25:09,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154337027] [2024-11-16 19:25:09,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:09,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:09,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 118 [2024-11-16 19:25:09,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:09,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:09,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 118 [2024-11-16 19:25:09,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:10,635 INFO L124 PetriNetUnfolderBase]: 2502/3758 cut-off events. [2024-11-16 19:25:10,635 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-16 19:25:10,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7533 conditions, 3758 events. 2502/3758 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17728 event pairs, 1702 based on Foata normal form. 0/2958 useless extension candidates. Maximal degree in co-relation 7530. Up to 3746 conditions per place. [2024-11-16 19:25:10,655 INFO L140 encePairwiseOnDemand]: 112/118 looper letters, 92 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-16 19:25:10,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 105 transitions, 406 flow [2024-11-16 19:25:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-16 19:25:10,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3700564971751412 [2024-11-16 19:25:10,658 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 210 flow. Second operand 3 states and 131 transitions. [2024-11-16 19:25:10,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 105 transitions, 406 flow [2024-11-16 19:25:10,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:10,662 INFO L231 Difference]: Finished difference. Result has 86 places, 105 transitions, 234 flow [2024-11-16 19:25:10,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=86, PETRI_TRANSITIONS=105} [2024-11-16 19:25:10,663 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2024-11-16 19:25:10,663 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 105 transitions, 234 flow [2024-11-16 19:25:10,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:10,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:10,664 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:10,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:25:10,665 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:10,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:10,666 INFO L85 PathProgramCache]: Analyzing trace with hash -437100066, now seen corresponding path program 1 times [2024-11-16 19:25:10,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:10,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425154023] [2024-11-16 19:25:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:10,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:25:10,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425154023] [2024-11-16 19:25:10,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425154023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:10,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:10,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:25:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223520782] [2024-11-16 19:25:10,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:10,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:10,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:10,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:10,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 118 [2024-11-16 19:25:10,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 19:25:10,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:10,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 118 [2024-11-16 19:25:10,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:12,145 INFO L124 PetriNetUnfolderBase]: 2502/3766 cut-off events. [2024-11-16 19:25:12,145 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-16 19:25:12,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 3766 events. 2502/3766 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17719 event pairs, 1702 based on Foata normal form. 0/2966 useless extension candidates. Maximal degree in co-relation 7552. Up to 3748 conditions per place. [2024-11-16 19:25:12,167 INFO L140 encePairwiseOnDemand]: 106/118 looper letters, 92 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2024-11-16 19:25:12,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 442 flow [2024-11-16 19:25:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-16 19:25:12,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3813559322033898 [2024-11-16 19:25:12,169 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 234 flow. Second operand 3 states and 135 transitions. [2024-11-16 19:25:12,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 442 flow [2024-11-16 19:25:12,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 109 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:12,173 INFO L231 Difference]: Finished difference. Result has 88 places, 109 transitions, 278 flow [2024-11-16 19:25:12,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=88, PETRI_TRANSITIONS=109} [2024-11-16 19:25:12,174 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2024-11-16 19:25:12,174 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 109 transitions, 278 flow [2024-11-16 19:25:12,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 19:25:12,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:12,175 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:12,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:25:12,175 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:12,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2012325380, now seen corresponding path program 1 times [2024-11-16 19:25:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:12,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215935982] [2024-11-16 19:25:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:12,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:25:12,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:12,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215935982] [2024-11-16 19:25:12,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215935982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:12,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770964168] [2024-11-16 19:25:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:12,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:12,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:12,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:12,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:25:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:12,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:25:12,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:25:12,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:25:13,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770964168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:13,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-16 19:25:13,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862646176] [2024-11-16 19:25:13,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:13,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:25:13,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:13,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:25:13,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:25:13,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 118 [2024-11-16 19:25:13,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 278 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:13,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:13,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 118 [2024-11-16 19:25:13,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:14,284 INFO L124 PetriNetUnfolderBase]: 2502/3802 cut-off events. [2024-11-16 19:25:14,285 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-16 19:25:14,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 3802 events. 2502/3802 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17722 event pairs, 1702 based on Foata normal form. 0/3002 useless extension candidates. Maximal degree in co-relation 7634. Up to 3746 conditions per place. [2024-11-16 19:25:14,307 INFO L140 encePairwiseOnDemand]: 94/118 looper letters, 86 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-11-16 19:25:14,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 570 flow [2024-11-16 19:25:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:25:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:25:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-11-16 19:25:14,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23728813559322035 [2024-11-16 19:25:14,312 INFO L175 Difference]: Start difference. First operand has 88 places, 109 transitions, 278 flow. Second operand 8 states and 224 transitions. [2024-11-16 19:25:14,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 570 flow [2024-11-16 19:25:14,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:14,317 INFO L231 Difference]: Finished difference. Result has 99 places, 127 transitions, 486 flow [2024-11-16 19:25:14,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=99, PETRI_TRANSITIONS=127} [2024-11-16 19:25:14,318 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 13 predicate places. [2024-11-16 19:25:14,318 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 127 transitions, 486 flow [2024-11-16 19:25:14,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:14,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:14,321 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:14,342 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 19:25:14,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:14,526 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:14,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash 623755896, now seen corresponding path program 1 times [2024-11-16 19:25:14,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:14,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822019929] [2024-11-16 19:25:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:14,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 19:25:14,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:14,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822019929] [2024-11-16 19:25:14,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822019929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977355840] [2024-11-16 19:25:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:14,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:14,910 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 19:25:14,913 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 19:25:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:15,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:25:15,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 19:25:15,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 19:25:15,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977355840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:15,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:15,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-16 19:25:15,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099863731] [2024-11-16 19:25:15,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:15,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:25:15,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:25:15,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:25:15,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 118 [2024-11-16 19:25:15,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 127 transitions, 486 flow. Second operand has 17 states, 17 states have (on average 14.352941176470589) internal successors, (244), 17 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:15,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:15,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 118 [2024-11-16 19:25:15,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:16,790 INFO L124 PetriNetUnfolderBase]: 2502/3826 cut-off events. [2024-11-16 19:25:16,790 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-11-16 19:25:16,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7779 conditions, 3826 events. 2502/3826 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17739 event pairs, 1702 based on Foata normal form. 4/3034 useless extension candidates. Maximal degree in co-relation 7768. Up to 3746 conditions per place. [2024-11-16 19:25:16,812 INFO L140 encePairwiseOnDemand]: 94/118 looper letters, 86 selfloop transitions, 44 changer transitions 0/139 dead transitions. [2024-11-16 19:25:16,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 814 flow [2024-11-16 19:25:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:25:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:25:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 318 transitions. [2024-11-16 19:25:16,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.1684322033898305 [2024-11-16 19:25:16,815 INFO L175 Difference]: Start difference. First operand has 99 places, 127 transitions, 486 flow. Second operand 16 states and 318 transitions. [2024-11-16 19:25:16,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 814 flow [2024-11-16 19:25:16,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 790 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:16,821 INFO L231 Difference]: Finished difference. Result has 117 places, 139 transitions, 682 flow [2024-11-16 19:25:16,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=682, PETRI_PLACES=117, PETRI_TRANSITIONS=139} [2024-11-16 19:25:16,823 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 31 predicate places. [2024-11-16 19:25:16,823 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 139 transitions, 682 flow [2024-11-16 19:25:16,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.352941176470589) internal successors, (244), 17 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:16,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:16,824 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:16,844 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 19:25:17,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:17,025 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:17,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1957519153, now seen corresponding path program 2 times [2024-11-16 19:25:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:17,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324235667] [2024-11-16 19:25:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-16 19:25:17,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:17,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324235667] [2024-11-16 19:25:17,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324235667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:17,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576918418] [2024-11-16 19:25:17,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:25:17,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:17,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:17,463 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 19:25:17,464 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 19:25:17,896 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:25:17,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:17,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 19:25:17,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:17,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:25:17,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-11-16 19:25:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-16 19:25:18,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:25:18,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576918418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:18,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:25:18,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-16 19:25:18,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741918538] [2024-11-16 19:25:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:18,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:18,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:18,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:25:18,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:18,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 139 transitions, 682 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 19:25:18,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:18,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:18,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:20,229 INFO L124 PetriNetUnfolderBase]: 3916/5970 cut-off events. [2024-11-16 19:25:20,229 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-16 19:25:20,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12137 conditions, 5970 events. 3916/5970 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 30516 event pairs, 1412 based on Foata normal form. 1/4767 useless extension candidates. Maximal degree in co-relation 12121. Up to 3014 conditions per place. [2024-11-16 19:25:20,256 INFO L140 encePairwiseOnDemand]: 97/118 looper letters, 197 selfloop transitions, 22 changer transitions 9/245 dead transitions. [2024-11-16 19:25:20,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 245 transitions, 1356 flow [2024-11-16 19:25:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 289 transitions. [2024-11-16 19:25:20,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48983050847457626 [2024-11-16 19:25:20,258 INFO L175 Difference]: Start difference. First operand has 117 places, 139 transitions, 682 flow. Second operand 5 states and 289 transitions. [2024-11-16 19:25:20,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 245 transitions, 1356 flow [2024-11-16 19:25:20,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 245 transitions, 1256 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-11-16 19:25:20,264 INFO L231 Difference]: Finished difference. Result has 117 places, 157 transitions, 725 flow [2024-11-16 19:25:20,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=117, PETRI_TRANSITIONS=157} [2024-11-16 19:25:20,265 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 31 predicate places. [2024-11-16 19:25:20,266 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 157 transitions, 725 flow [2024-11-16 19:25:20,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 19:25:20,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:20,266 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:20,286 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 19:25:20,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:20,471 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:20,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2004833547, now seen corresponding path program 3 times [2024-11-16 19:25:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:20,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702118656] [2024-11-16 19:25:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-16 19:25:20,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:20,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702118656] [2024-11-16 19:25:20,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702118656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:20,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855815095] [2024-11-16 19:25:20,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:25:20,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:20,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:20,882 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 19:25:20,883 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 19:25:21,264 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:25:21,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:21,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 19:25:21,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:21,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:25:21,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-11-16 19:25:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-16 19:25:21,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:25:21,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855815095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:21,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:25:21,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-16 19:25:21,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056887562] [2024-11-16 19:25:21,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:21,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:21,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:25:21,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:21,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 157 transitions, 725 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 19:25:21,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:21,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:21,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:22,896 INFO L124 PetriNetUnfolderBase]: 4031/6186 cut-off events. [2024-11-16 19:25:22,896 INFO L125 PetriNetUnfolderBase]: For 1063/1063 co-relation queries the response was YES. [2024-11-16 19:25:22,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14862 conditions, 6186 events. 4031/6186 cut-off events. For 1063/1063 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 32322 event pairs, 1421 based on Foata normal form. 1/4951 useless extension candidates. Maximal degree in co-relation 14842. Up to 3289 conditions per place. [2024-11-16 19:25:23,009 INFO L140 encePairwiseOnDemand]: 97/118 looper letters, 195 selfloop transitions, 22 changer transitions 9/243 dead transitions. [2024-11-16 19:25:23,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 243 transitions, 1376 flow [2024-11-16 19:25:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 287 transitions. [2024-11-16 19:25:23,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4864406779661017 [2024-11-16 19:25:23,012 INFO L175 Difference]: Start difference. First operand has 117 places, 157 transitions, 725 flow. Second operand 5 states and 287 transitions. [2024-11-16 19:25:23,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 243 transitions, 1376 flow [2024-11-16 19:25:23,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 243 transitions, 1370 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:23,028 INFO L231 Difference]: Finished difference. Result has 122 places, 157 transitions, 777 flow [2024-11-16 19:25:23,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=777, PETRI_PLACES=122, PETRI_TRANSITIONS=157} [2024-11-16 19:25:23,029 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 36 predicate places. [2024-11-16 19:25:23,030 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 157 transitions, 777 flow [2024-11-16 19:25:23,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 19:25:23,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:23,030 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:23,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:25:23,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:23,231 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:23,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1911585029, now seen corresponding path program 1 times [2024-11-16 19:25:23,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:23,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274546793] [2024-11-16 19:25:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:23,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-16 19:25:23,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:23,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274546793] [2024-11-16 19:25:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274546793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:23,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608765912] [2024-11-16 19:25:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:23,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:23,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:23,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:25:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:24,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 19:25:24,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-16 19:25:24,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-16 19:25:24,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608765912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:24,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:24,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-16 19:25:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85246647] [2024-11-16 19:25:24,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:24,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 19:25:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 19:25:24,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=205, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:25:24,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 118 [2024-11-16 19:25:24,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 157 transitions, 777 flow. Second operand has 20 states, 20 states have (on average 14.25) internal successors, (285), 20 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 19:25:24,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:24,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 118 [2024-11-16 19:25:24,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:26,455 INFO L124 PetriNetUnfolderBase]: 4018/6190 cut-off events. [2024-11-16 19:25:26,456 INFO L125 PetriNetUnfolderBase]: For 2962/2962 co-relation queries the response was YES. [2024-11-16 19:25:26,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15780 conditions, 6190 events. 4018/6190 cut-off events. For 2962/2962 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 31952 event pairs, 2846 based on Foata normal form. 14/4968 useless extension candidates. Maximal degree in co-relation 15758. Up to 6080 conditions per place. [2024-11-16 19:25:26,493 INFO L140 encePairwiseOnDemand]: 100/118 looper letters, 104 selfloop transitions, 58 changer transitions 0/171 dead transitions. [2024-11-16 19:25:26,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 171 transitions, 1185 flow [2024-11-16 19:25:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:25:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:25:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 312 transitions. [2024-11-16 19:25:26,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.18886198547215496 [2024-11-16 19:25:26,496 INFO L175 Difference]: Start difference. First operand has 122 places, 157 transitions, 777 flow. Second operand 14 states and 312 transitions. [2024-11-16 19:25:26,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 171 transitions, 1185 flow [2024-11-16 19:25:26,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 171 transitions, 1160 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-16 19:25:26,514 INFO L231 Difference]: Finished difference. Result has 139 places, 171 transitions, 1064 flow [2024-11-16 19:25:26,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1064, PETRI_PLACES=139, PETRI_TRANSITIONS=171} [2024-11-16 19:25:26,515 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 53 predicate places. [2024-11-16 19:25:26,515 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 171 transitions, 1064 flow [2024-11-16 19:25:26,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.25) internal successors, (285), 20 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 19:25:26,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:26,516 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 12, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:26,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 19:25:26,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:26,717 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:26,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1384461822, now seen corresponding path program 2 times [2024-11-16 19:25:26,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515924392] [2024-11-16 19:25:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:26,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 19:25:27,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:27,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515924392] [2024-11-16 19:25:27,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515924392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:27,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977560806] [2024-11-16 19:25:27,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:25:27,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:27,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:27,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:27,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:25:28,055 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:25:28,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:28,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:25:28,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2024-11-16 19:25:28,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:25:28,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977560806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:28,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:25:28,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2024-11-16 19:25:28,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435119875] [2024-11-16 19:25:28,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:28,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:28,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-11-16 19:25:28,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:28,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 171 transitions, 1064 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:25:28,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:28,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:28,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:29,499 INFO L124 PetriNetUnfolderBase]: 4109/6411 cut-off events. [2024-11-16 19:25:29,499 INFO L125 PetriNetUnfolderBase]: For 2075/2075 co-relation queries the response was YES. [2024-11-16 19:25:29,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16159 conditions, 6411 events. 4109/6411 cut-off events. For 2075/2075 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 34669 event pairs, 1034 based on Foata normal form. 73/5194 useless extension candidates. Maximal degree in co-relation 16130. Up to 4990 conditions per place. [2024-11-16 19:25:29,541 INFO L140 encePairwiseOnDemand]: 102/118 looper letters, 180 selfloop transitions, 20 changer transitions 2/219 dead transitions. [2024-11-16 19:25:29,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 219 transitions, 1600 flow [2024-11-16 19:25:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2024-11-16 19:25:29,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536723163841808 [2024-11-16 19:25:29,543 INFO L175 Difference]: Start difference. First operand has 139 places, 171 transitions, 1064 flow. Second operand 3 states and 190 transitions. [2024-11-16 19:25:29,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 219 transitions, 1600 flow [2024-11-16 19:25:29,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 219 transitions, 1540 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-16 19:25:29,561 INFO L231 Difference]: Finished difference. Result has 138 places, 187 transitions, 1190 flow [2024-11-16 19:25:29,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1190, PETRI_PLACES=138, PETRI_TRANSITIONS=187} [2024-11-16 19:25:29,563 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 52 predicate places. [2024-11-16 19:25:29,563 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 187 transitions, 1190 flow [2024-11-16 19:25:29,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:25:29,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:29,564 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 12, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:29,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 19:25:29,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:29,765 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:29,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:29,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1598875858, now seen corresponding path program 3 times [2024-11-16 19:25:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:29,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799730043] [2024-11-16 19:25:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 19:25:30,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799730043] [2024-11-16 19:25:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799730043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101248266] [2024-11-16 19:25:30,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:25:30,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:30,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:30,491 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:30,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:25:30,966 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:25:30,966 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:30,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 19:25:30,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:31,200 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-16 19:25:31,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 9 [2024-11-16 19:25:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2024-11-16 19:25:31,228 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:25:31,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101248266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:31,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:25:31,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2024-11-16 19:25:31,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885975170] [2024-11-16 19:25:31,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:31,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:25:31,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:31,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:25:31,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2024-11-16 19:25:31,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:31,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 187 transitions, 1190 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 19:25:31,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:31,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:31,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:33,366 INFO L124 PetriNetUnfolderBase]: 4883/7758 cut-off events. [2024-11-16 19:25:33,367 INFO L125 PetriNetUnfolderBase]: For 3869/3869 co-relation queries the response was YES. [2024-11-16 19:25:33,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20466 conditions, 7758 events. 4883/7758 cut-off events. For 3869/3869 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 45051 event pairs, 856 based on Foata normal form. 3/6289 useless extension candidates. Maximal degree in co-relation 20435. Up to 2335 conditions per place. [2024-11-16 19:25:33,418 INFO L140 encePairwiseOnDemand]: 94/118 looper letters, 273 selfloop transitions, 65 changer transitions 14/369 dead transitions. [2024-11-16 19:25:33,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 369 transitions, 2424 flow [2024-11-16 19:25:33,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 410 transitions. [2024-11-16 19:25:33,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4963680387409201 [2024-11-16 19:25:33,421 INFO L175 Difference]: Start difference. First operand has 138 places, 187 transitions, 1190 flow. Second operand 7 states and 410 transitions. [2024-11-16 19:25:33,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 369 transitions, 2424 flow [2024-11-16 19:25:33,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 369 transitions, 2376 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:33,448 INFO L231 Difference]: Finished difference. Result has 146 places, 220 transitions, 1581 flow [2024-11-16 19:25:33,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1581, PETRI_PLACES=146, PETRI_TRANSITIONS=220} [2024-11-16 19:25:33,451 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 60 predicate places. [2024-11-16 19:25:33,451 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 220 transitions, 1581 flow [2024-11-16 19:25:33,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 19:25:33,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:33,451 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 12, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:33,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 19:25:33,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:33,652 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:33,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash -541777404, now seen corresponding path program 1 times [2024-11-16 19:25:33,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:33,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74913241] [2024-11-16 19:25:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:33,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 19:25:34,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74913241] [2024-11-16 19:25:34,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74913241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167327054] [2024-11-16 19:25:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:34,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:34,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:34,262 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:34,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:25:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:34,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 19:25:34,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 19:25:35,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 19:25:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167327054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:35,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:35,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2024-11-16 19:25:35,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105398527] [2024-11-16 19:25:35,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:35,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 19:25:35,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:35,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 19:25:35,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1054, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 19:25:35,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 118 [2024-11-16 19:25:35,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 220 transitions, 1581 flow. Second operand has 41 states, 41 states have (on average 13.097560975609756) internal successors, (537), 41 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 19:25:35,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:35,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 118 [2024-11-16 19:25:35,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:37,477 INFO L124 PetriNetUnfolderBase]: 4883/7762 cut-off events. [2024-11-16 19:25:37,477 INFO L125 PetriNetUnfolderBase]: For 7800/7800 co-relation queries the response was YES. [2024-11-16 19:25:37,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23013 conditions, 7762 events. 4883/7762 cut-off events. For 7800/7800 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 44667 event pairs, 3621 based on Foata normal form. 2/6292 useless extension candidates. Maximal degree in co-relation 22978. Up to 7646 conditions per place. [2024-11-16 19:25:37,527 INFO L140 encePairwiseOnDemand]: 100/118 looper letters, 153 selfloop transitions, 60 changer transitions 0/222 dead transitions. [2024-11-16 19:25:37,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 222 transitions, 2023 flow [2024-11-16 19:25:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 19:25:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-16 19:25:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 368 transitions. [2024-11-16 19:25:37,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.15593220338983052 [2024-11-16 19:25:37,531 INFO L175 Difference]: Start difference. First operand has 146 places, 220 transitions, 1581 flow. Second operand 20 states and 368 transitions. [2024-11-16 19:25:37,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 222 transitions, 2023 flow [2024-11-16 19:25:37,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 222 transitions, 2013 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:37,591 INFO L231 Difference]: Finished difference. Result has 166 places, 222 transitions, 1719 flow [2024-11-16 19:25:37,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1719, PETRI_PLACES=166, PETRI_TRANSITIONS=222} [2024-11-16 19:25:37,593 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 80 predicate places. [2024-11-16 19:25:37,593 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 222 transitions, 1719 flow [2024-11-16 19:25:37,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 13.097560975609756) internal successors, (537), 41 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 19:25:37,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:37,594 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:37,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 19:25:37,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 19:25:37,798 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:37,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash -133892049, now seen corresponding path program 1 times [2024-11-16 19:25:37,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:37,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901778069] [2024-11-16 19:25:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:37,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:25:38,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:38,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901778069] [2024-11-16 19:25:38,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901778069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:38,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:38,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:25:38,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774081951] [2024-11-16 19:25:38,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:38,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:38,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:38,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:38,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:38,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 222 transitions, 1719 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:25:38,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:38,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:38,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:40,734 INFO L124 PetriNetUnfolderBase]: 5031/8076 cut-off events. [2024-11-16 19:25:40,735 INFO L125 PetriNetUnfolderBase]: For 7886/7886 co-relation queries the response was YES. [2024-11-16 19:25:40,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23667 conditions, 8076 events. 5031/8076 cut-off events. For 7886/7886 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 47100 event pairs, 3236 based on Foata normal form. 80/6634 useless extension candidates. Maximal degree in co-relation 23630. Up to 6663 conditions per place. [2024-11-16 19:25:40,771 INFO L140 encePairwiseOnDemand]: 115/118 looper letters, 239 selfloop transitions, 6 changer transitions 2/264 dead transitions. [2024-11-16 19:25:40,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 264 transitions, 2373 flow [2024-11-16 19:25:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:40,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-11-16 19:25:40,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5169491525423728 [2024-11-16 19:25:40,773 INFO L175 Difference]: Start difference. First operand has 166 places, 222 transitions, 1719 flow. Second operand 3 states and 183 transitions. [2024-11-16 19:25:40,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 264 transitions, 2373 flow [2024-11-16 19:25:40,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 264 transitions, 2173 flow, removed 16 selfloop flow, removed 18 redundant places. [2024-11-16 19:25:40,839 INFO L231 Difference]: Finished difference. Result has 151 places, 222 transitions, 1545 flow [2024-11-16 19:25:40,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1545, PETRI_PLACES=151, PETRI_TRANSITIONS=222} [2024-11-16 19:25:40,841 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 65 predicate places. [2024-11-16 19:25:40,842 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 222 transitions, 1545 flow [2024-11-16 19:25:40,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:25:40,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:40,843 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:40,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 19:25:40,844 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:40,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1014514737, now seen corresponding path program 2 times [2024-11-16 19:25:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946555333] [2024-11-16 19:25:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:25:41,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:41,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946555333] [2024-11-16 19:25:41,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946555333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:41,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:41,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:25:41,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968049841] [2024-11-16 19:25:41,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:41,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:41,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:41,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:41,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:41,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 222 transitions, 1545 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:25:41,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:41,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:41,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:43,625 INFO L124 PetriNetUnfolderBase]: 4867/7999 cut-off events. [2024-11-16 19:25:43,625 INFO L125 PetriNetUnfolderBase]: For 8362/8362 co-relation queries the response was YES. [2024-11-16 19:25:43,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22931 conditions, 7999 events. 4867/7999 cut-off events. For 8362/8362 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 48919 event pairs, 2208 based on Foata normal form. 266/6713 useless extension candidates. Maximal degree in co-relation 22893. Up to 3990 conditions per place. [2024-11-16 19:25:43,662 INFO L140 encePairwiseOnDemand]: 104/118 looper letters, 213 selfloop transitions, 7 changer transitions 22/259 dead transitions. [2024-11-16 19:25:43,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 259 transitions, 2077 flow [2024-11-16 19:25:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-16 19:25:43,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5621468926553672 [2024-11-16 19:25:43,664 INFO L175 Difference]: Start difference. First operand has 151 places, 222 transitions, 1545 flow. Second operand 3 states and 199 transitions. [2024-11-16 19:25:43,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 259 transitions, 2077 flow [2024-11-16 19:25:43,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 259 transitions, 2071 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:43,725 INFO L231 Difference]: Finished difference. Result has 154 places, 211 transitions, 1506 flow [2024-11-16 19:25:43,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1506, PETRI_PLACES=154, PETRI_TRANSITIONS=211} [2024-11-16 19:25:43,726 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 68 predicate places. [2024-11-16 19:25:43,726 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 211 transitions, 1506 flow [2024-11-16 19:25:43,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:43,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:43,728 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:43,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 19:25:43,728 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:43,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash -715791095, now seen corresponding path program 1 times [2024-11-16 19:25:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756483468] [2024-11-16 19:25:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:43,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:25:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:44,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756483468] [2024-11-16 19:25:44,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756483468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:44,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:44,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:25:44,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358383522] [2024-11-16 19:25:44,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:44,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:44,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:44,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:44,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 211 transitions, 1506 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:44,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:44,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:44,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:45,827 INFO L124 PetriNetUnfolderBase]: 4661/7655 cut-off events. [2024-11-16 19:25:45,827 INFO L125 PetriNetUnfolderBase]: For 9008/9008 co-relation queries the response was YES. [2024-11-16 19:25:45,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22442 conditions, 7655 events. 4661/7655 cut-off events. For 9008/9008 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 45693 event pairs, 3202 based on Foata normal form. 74/6217 useless extension candidates. Maximal degree in co-relation 22403. Up to 6463 conditions per place. [2024-11-16 19:25:45,866 INFO L140 encePairwiseOnDemand]: 115/118 looper letters, 209 selfloop transitions, 4 changer transitions 12/242 dead transitions. [2024-11-16 19:25:45,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 242 transitions, 2030 flow [2024-11-16 19:25:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2024-11-16 19:25:45,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2024-11-16 19:25:45,868 INFO L175 Difference]: Start difference. First operand has 154 places, 211 transitions, 1506 flow. Second operand 3 states and 180 transitions. [2024-11-16 19:25:45,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 242 transitions, 2030 flow [2024-11-16 19:25:45,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 242 transitions, 2019 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:45,914 INFO L231 Difference]: Finished difference. Result has 156 places, 206 transitions, 1472 flow [2024-11-16 19:25:45,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1472, PETRI_PLACES=156, PETRI_TRANSITIONS=206} [2024-11-16 19:25:45,915 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 70 predicate places. [2024-11-16 19:25:45,915 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 206 transitions, 1472 flow [2024-11-16 19:25:45,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:45,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:45,915 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:45,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 19:25:45,916 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:45,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash 678532091, now seen corresponding path program 1 times [2024-11-16 19:25:45,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:45,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486885449] [2024-11-16 19:25:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:45,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:25:46,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486885449] [2024-11-16 19:25:46,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486885449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:46,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:46,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052064652] [2024-11-16 19:25:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:46,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:46,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:46,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:46,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 206 transitions, 1472 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:46,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:46,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:46,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:48,599 INFO L124 PetriNetUnfolderBase]: 4848/8026 cut-off events. [2024-11-16 19:25:48,599 INFO L125 PetriNetUnfolderBase]: For 8817/8817 co-relation queries the response was YES. [2024-11-16 19:25:48,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23575 conditions, 8026 events. 4848/8026 cut-off events. For 8817/8817 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 49120 event pairs, 1717 based on Foata normal form. 1/6470 useless extension candidates. Maximal degree in co-relation 23535. Up to 5053 conditions per place. [2024-11-16 19:25:48,639 INFO L140 encePairwiseOnDemand]: 99/118 looper letters, 235 selfloop transitions, 31 changer transitions 12/295 dead transitions. [2024-11-16 19:25:48,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 295 transitions, 2312 flow [2024-11-16 19:25:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2024-11-16 19:25:48,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48135593220338985 [2024-11-16 19:25:48,641 INFO L175 Difference]: Start difference. First operand has 156 places, 206 transitions, 1472 flow. Second operand 5 states and 284 transitions. [2024-11-16 19:25:48,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 295 transitions, 2312 flow [2024-11-16 19:25:48,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 295 transitions, 2274 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-16 19:25:48,692 INFO L231 Difference]: Finished difference. Result has 159 places, 206 transitions, 1508 flow [2024-11-16 19:25:48,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1508, PETRI_PLACES=159, PETRI_TRANSITIONS=206} [2024-11-16 19:25:48,693 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 73 predicate places. [2024-11-16 19:25:48,693 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 206 transitions, 1508 flow [2024-11-16 19:25:48,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:48,694 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:48,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 19:25:48,694 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:48,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash -640339425, now seen corresponding path program 2 times [2024-11-16 19:25:48,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:48,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676787479] [2024-11-16 19:25:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:25:49,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:49,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676787479] [2024-11-16 19:25:49,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676787479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:49,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:49,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132201894] [2024-11-16 19:25:49,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:49,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:49,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:49,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:49,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 206 transitions, 1508 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:49,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:49,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:49,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:51,668 INFO L124 PetriNetUnfolderBase]: 5006/8343 cut-off events. [2024-11-16 19:25:51,668 INFO L125 PetriNetUnfolderBase]: For 10132/10132 co-relation queries the response was YES. [2024-11-16 19:25:51,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24664 conditions, 8343 events. 5006/8343 cut-off events. For 10132/10132 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 52103 event pairs, 3961 based on Foata normal form. 5/6751 useless extension candidates. Maximal degree in co-relation 24623. Up to 7872 conditions per place. [2024-11-16 19:25:51,716 INFO L140 encePairwiseOnDemand]: 114/118 looper letters, 218 selfloop transitions, 4 changer transitions 9/248 dead transitions. [2024-11-16 19:25:51,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 248 transitions, 2130 flow [2024-11-16 19:25:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:25:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:25:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-16 19:25:51,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4300847457627119 [2024-11-16 19:25:51,717 INFO L175 Difference]: Start difference. First operand has 159 places, 206 transitions, 1508 flow. Second operand 4 states and 203 transitions. [2024-11-16 19:25:51,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 248 transitions, 2130 flow [2024-11-16 19:25:51,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 248 transitions, 2094 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-16 19:25:51,755 INFO L231 Difference]: Finished difference. Result has 161 places, 206 transitions, 1492 flow [2024-11-16 19:25:51,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1492, PETRI_PLACES=161, PETRI_TRANSITIONS=206} [2024-11-16 19:25:51,756 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 75 predicate places. [2024-11-16 19:25:51,756 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 206 transitions, 1492 flow [2024-11-16 19:25:51,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:51,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:51,757 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:51,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 19:25:51,757 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:51,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash -893102218, now seen corresponding path program 1 times [2024-11-16 19:25:51,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:51,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866314753] [2024-11-16 19:25:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:51,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-16 19:25:52,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866314753] [2024-11-16 19:25:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866314753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:25:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674655333] [2024-11-16 19:25:52,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:52,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:52,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:52,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 206 transitions, 1492 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:52,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:52,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:52,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:54,083 INFO L124 PetriNetUnfolderBase]: 4938/8211 cut-off events. [2024-11-16 19:25:54,084 INFO L125 PetriNetUnfolderBase]: For 8519/8519 co-relation queries the response was YES. [2024-11-16 19:25:54,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24406 conditions, 8211 events. 4938/8211 cut-off events. For 8519/8519 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 50827 event pairs, 3891 based on Foata normal form. 9/6633 useless extension candidates. Maximal degree in co-relation 24363. Up to 7823 conditions per place. [2024-11-16 19:25:54,129 INFO L140 encePairwiseOnDemand]: 114/118 looper letters, 183 selfloop transitions, 0 changer transitions 36/236 dead transitions. [2024-11-16 19:25:54,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 236 transitions, 1983 flow [2024-11-16 19:25:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-11-16 19:25:54,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-16 19:25:54,130 INFO L175 Difference]: Start difference. First operand has 161 places, 206 transitions, 1492 flow. Second operand 3 states and 177 transitions. [2024-11-16 19:25:54,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 236 transitions, 1983 flow [2024-11-16 19:25:54,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 236 transitions, 1948 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:54,165 INFO L231 Difference]: Finished difference. Result has 158 places, 200 transitions, 1414 flow [2024-11-16 19:25:54,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1414, PETRI_PLACES=158, PETRI_TRANSITIONS=200} [2024-11-16 19:25:54,166 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 72 predicate places. [2024-11-16 19:25:54,166 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 200 transitions, 1414 flow [2024-11-16 19:25:54,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:54,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:54,166 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:54,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 19:25:54,167 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:54,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1881712185, now seen corresponding path program 1 times [2024-11-16 19:25:54,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:54,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375014966] [2024-11-16 19:25:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:54,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:25:55,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375014966] [2024-11-16 19:25:55,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375014966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:55,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:55,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:25:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898824644] [2024-11-16 19:25:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:55,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:55,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:55,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 200 transitions, 1414 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:55,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:55,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:55,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:57,184 INFO L124 PetriNetUnfolderBase]: 4795/8092 cut-off events. [2024-11-16 19:25:57,184 INFO L125 PetriNetUnfolderBase]: For 7125/7125 co-relation queries the response was YES. [2024-11-16 19:25:57,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23227 conditions, 8092 events. 4795/8092 cut-off events. For 7125/7125 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 51089 event pairs, 3412 based on Foata normal form. 54/6731 useless extension candidates. Maximal degree in co-relation 23187. Up to 6519 conditions per place. [2024-11-16 19:25:57,227 INFO L140 encePairwiseOnDemand]: 108/118 looper letters, 224 selfloop transitions, 12 changer transitions 6/259 dead transitions. [2024-11-16 19:25:57,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 259 transitions, 2098 flow [2024-11-16 19:25:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2024-11-16 19:25:57,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5734463276836158 [2024-11-16 19:25:57,228 INFO L175 Difference]: Start difference. First operand has 158 places, 200 transitions, 1414 flow. Second operand 3 states and 203 transitions. [2024-11-16 19:25:57,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 259 transitions, 2098 flow [2024-11-16 19:25:57,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 259 transitions, 2067 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:57,256 INFO L231 Difference]: Finished difference. Result has 157 places, 200 transitions, 1450 flow [2024-11-16 19:25:57,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1450, PETRI_PLACES=157, PETRI_TRANSITIONS=200} [2024-11-16 19:25:57,257 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 71 predicate places. [2024-11-16 19:25:57,257 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 200 transitions, 1450 flow [2024-11-16 19:25:57,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:57,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:57,257 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:57,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 19:25:57,258 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:57,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash 151435801, now seen corresponding path program 2 times [2024-11-16 19:25:57,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:57,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598877] [2024-11-16 19:25:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:25:58,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598877] [2024-11-16 19:25:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:58,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:25:58,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455387622] [2024-11-16 19:25:58,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:58,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:58,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:58,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:58,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:58,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:25:58,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 200 transitions, 1450 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:58,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:58,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:25:58,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:59,883 INFO L124 PetriNetUnfolderBase]: 4520/7641 cut-off events. [2024-11-16 19:25:59,883 INFO L125 PetriNetUnfolderBase]: For 8779/8779 co-relation queries the response was YES. [2024-11-16 19:25:59,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21524 conditions, 7641 events. 4520/7641 cut-off events. For 8779/8779 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47753 event pairs, 2573 based on Foata normal form. 100/6357 useless extension candidates. Maximal degree in co-relation 21483. Up to 3896 conditions per place. [2024-11-16 19:25:59,942 INFO L140 encePairwiseOnDemand]: 108/118 looper letters, 209 selfloop transitions, 6 changer transitions 5/237 dead transitions. [2024-11-16 19:25:59,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 237 transitions, 1914 flow [2024-11-16 19:25:59,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2024-11-16 19:25:59,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451977401129944 [2024-11-16 19:25:59,943 INFO L175 Difference]: Start difference. First operand has 157 places, 200 transitions, 1450 flow. Second operand 3 states and 193 transitions. [2024-11-16 19:25:59,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 237 transitions, 1914 flow [2024-11-16 19:25:59,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 237 transitions, 1910 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:59,972 INFO L231 Difference]: Finished difference. Result has 158 places, 188 transitions, 1312 flow [2024-11-16 19:25:59,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1312, PETRI_PLACES=158, PETRI_TRANSITIONS=188} [2024-11-16 19:25:59,973 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 72 predicate places. [2024-11-16 19:25:59,973 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 188 transitions, 1312 flow [2024-11-16 19:25:59,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:59,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:59,973 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:59,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 19:25:59,973 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:59,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:59,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1255550366, now seen corresponding path program 1 times [2024-11-16 19:25:59,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:59,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030421786] [2024-11-16 19:25:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:26:00,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030421786] [2024-11-16 19:26:00,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030421786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:00,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:00,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111221329] [2024-11-16 19:26:00,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:00,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:00,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:00,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:26:00,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 188 transitions, 1312 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:00,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:00,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:26:00,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:02,610 INFO L124 PetriNetUnfolderBase]: 4703/8056 cut-off events. [2024-11-16 19:26:02,610 INFO L125 PetriNetUnfolderBase]: For 7350/7350 co-relation queries the response was YES. [2024-11-16 19:26:02,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22443 conditions, 8056 events. 4703/8056 cut-off events. For 7350/7350 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 52052 event pairs, 2606 based on Foata normal form. 59/6668 useless extension candidates. Maximal degree in co-relation 22402. Up to 4127 conditions per place. [2024-11-16 19:26:02,654 INFO L140 encePairwiseOnDemand]: 108/118 looper letters, 203 selfloop transitions, 12 changer transitions 5/237 dead transitions. [2024-11-16 19:26:02,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 237 transitions, 1924 flow [2024-11-16 19:26:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2024-11-16 19:26:02,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451977401129944 [2024-11-16 19:26:02,656 INFO L175 Difference]: Start difference. First operand has 158 places, 188 transitions, 1312 flow. Second operand 3 states and 193 transitions. [2024-11-16 19:26:02,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 237 transitions, 1924 flow [2024-11-16 19:26:02,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 237 transitions, 1874 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 19:26:02,684 INFO L231 Difference]: Finished difference. Result has 157 places, 188 transitions, 1328 flow [2024-11-16 19:26:02,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1328, PETRI_PLACES=157, PETRI_TRANSITIONS=188} [2024-11-16 19:26:02,685 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 71 predicate places. [2024-11-16 19:26:02,685 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 188 transitions, 1328 flow [2024-11-16 19:26:02,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:02,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:02,685 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:02,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 19:26:02,686 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:02,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:02,686 INFO L85 PathProgramCache]: Analyzing trace with hash 780082770, now seen corresponding path program 2 times [2024-11-16 19:26:02,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:02,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600169713] [2024-11-16 19:26:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:02,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:26:03,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:03,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600169713] [2024-11-16 19:26:03,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600169713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:03,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:03,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389558914] [2024-11-16 19:26:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:03,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:03,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:03,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:03,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:26:03,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 188 transitions, 1328 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:03,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:03,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:26:03,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:05,306 INFO L124 PetriNetUnfolderBase]: 4666/7993 cut-off events. [2024-11-16 19:26:05,306 INFO L125 PetriNetUnfolderBase]: For 7994/7994 co-relation queries the response was YES. [2024-11-16 19:26:05,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21664 conditions, 7993 events. 4666/7993 cut-off events. For 7994/7994 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 51571 event pairs, 3690 based on Foata normal form. 27/6573 useless extension candidates. Maximal degree in co-relation 21626. Up to 6922 conditions per place. [2024-11-16 19:26:05,341 INFO L140 encePairwiseOnDemand]: 108/118 looper letters, 199 selfloop transitions, 4 changer transitions 9/229 dead transitions. [2024-11-16 19:26:05,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 229 transitions, 1809 flow [2024-11-16 19:26:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-11-16 19:26:05,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53954802259887 [2024-11-16 19:26:05,342 INFO L175 Difference]: Start difference. First operand has 157 places, 188 transitions, 1328 flow. Second operand 3 states and 191 transitions. [2024-11-16 19:26:05,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 229 transitions, 1809 flow [2024-11-16 19:26:05,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 229 transitions, 1803 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:26:05,363 INFO L231 Difference]: Finished difference. Result has 158 places, 182 transitions, 1238 flow [2024-11-16 19:26:05,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1238, PETRI_PLACES=158, PETRI_TRANSITIONS=182} [2024-11-16 19:26:05,364 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 72 predicate places. [2024-11-16 19:26:05,364 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 182 transitions, 1238 flow [2024-11-16 19:26:05,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:05,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:05,365 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:05,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 19:26:05,365 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:05,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1187375859, now seen corresponding path program 1 times [2024-11-16 19:26:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:05,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463869585] [2024-11-16 19:26:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:26:05,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:05,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463869585] [2024-11-16 19:26:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463869585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:05,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:05,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:05,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866301543] [2024-11-16 19:26:05,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:05,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:05,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:05,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:05,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:05,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:26:05,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 182 transitions, 1238 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:05,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:05,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:26:05,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:07,171 INFO L124 PetriNetUnfolderBase]: 4580/7862 cut-off events. [2024-11-16 19:26:07,171 INFO L125 PetriNetUnfolderBase]: For 7054/7054 co-relation queries the response was YES. [2024-11-16 19:26:07,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21191 conditions, 7862 events. 4580/7862 cut-off events. For 7054/7054 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 50736 event pairs, 2978 based on Foata normal form. 41/6464 useless extension candidates. Maximal degree in co-relation 21153. Up to 4831 conditions per place. [2024-11-16 19:26:07,200 INFO L140 encePairwiseOnDemand]: 112/118 looper letters, 192 selfloop transitions, 5 changer transitions 14/228 dead transitions. [2024-11-16 19:26:07,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 228 transitions, 1776 flow [2024-11-16 19:26:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-11-16 19:26:07,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310734463276836 [2024-11-16 19:26:07,201 INFO L175 Difference]: Start difference. First operand has 158 places, 182 transitions, 1238 flow. Second operand 3 states and 188 transitions. [2024-11-16 19:26:07,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 228 transitions, 1776 flow [2024-11-16 19:26:07,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 228 transitions, 1771 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:07,220 INFO L231 Difference]: Finished difference. Result has 159 places, 179 transitions, 1200 flow [2024-11-16 19:26:07,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1200, PETRI_PLACES=159, PETRI_TRANSITIONS=179} [2024-11-16 19:26:07,221 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 73 predicate places. [2024-11-16 19:26:07,221 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 179 transitions, 1200 flow [2024-11-16 19:26:07,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:07,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:07,222 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:07,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-16 19:26:07,222 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:07,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:07,223 INFO L85 PathProgramCache]: Analyzing trace with hash 281241159, now seen corresponding path program 1 times [2024-11-16 19:26:07,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:07,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690747866] [2024-11-16 19:26:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:26:07,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690747866] [2024-11-16 19:26:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690747866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693031310] [2024-11-16 19:26:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:07,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:07,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:26:07,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 179 transitions, 1200 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:07,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:07,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:26:07,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:08,890 INFO L124 PetriNetUnfolderBase]: 4545/7794 cut-off events. [2024-11-16 19:26:08,891 INFO L125 PetriNetUnfolderBase]: For 6035/6035 co-relation queries the response was YES. [2024-11-16 19:26:08,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21137 conditions, 7794 events. 4545/7794 cut-off events. For 6035/6035 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 50113 event pairs, 3818 based on Foata normal form. 5/6365 useless extension candidates. Maximal degree in co-relation 21100. Up to 7232 conditions per place. [2024-11-16 19:26:08,939 INFO L140 encePairwiseOnDemand]: 115/118 looper letters, 185 selfloop transitions, 2 changer transitions 20/224 dead transitions. [2024-11-16 19:26:08,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 224 transitions, 1739 flow [2024-11-16 19:26:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-11-16 19:26:08,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.519774011299435 [2024-11-16 19:26:08,940 INFO L175 Difference]: Start difference. First operand has 159 places, 179 transitions, 1200 flow. Second operand 3 states and 184 transitions. [2024-11-16 19:26:08,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 224 transitions, 1739 flow [2024-11-16 19:26:08,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 224 transitions, 1731 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:08,971 INFO L231 Difference]: Finished difference. Result has 159 places, 178 transitions, 1183 flow [2024-11-16 19:26:08,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=159, PETRI_TRANSITIONS=178} [2024-11-16 19:26:08,972 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 73 predicate places. [2024-11-16 19:26:08,972 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 178 transitions, 1183 flow [2024-11-16 19:26:08,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:08,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:08,972 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:08,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-16 19:26:08,973 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:08,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1146357648, now seen corresponding path program 1 times [2024-11-16 19:26:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170594704] [2024-11-16 19:26:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:08,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-16 19:26:09,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:09,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170594704] [2024-11-16 19:26:09,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170594704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:09,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:09,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:09,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403321864] [2024-11-16 19:26:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:09,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:09,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:26:09,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 178 transitions, 1183 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:09,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:09,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:26:09,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:10,816 INFO L124 PetriNetUnfolderBase]: 3532/6015 cut-off events. [2024-11-16 19:26:10,816 INFO L125 PetriNetUnfolderBase]: For 4934/4934 co-relation queries the response was YES. [2024-11-16 19:26:10,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16357 conditions, 6015 events. 3532/6015 cut-off events. For 4934/4934 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 36129 event pairs, 1672 based on Foata normal form. 77/4873 useless extension candidates. Maximal degree in co-relation 16320. Up to 3088 conditions per place. [2024-11-16 19:26:10,846 INFO L140 encePairwiseOnDemand]: 106/118 looper letters, 166 selfloop transitions, 6 changer transitions 14/203 dead transitions. [2024-11-16 19:26:10,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 203 transitions, 1564 flow [2024-11-16 19:26:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-11-16 19:26:10,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5056497175141242 [2024-11-16 19:26:10,847 INFO L175 Difference]: Start difference. First operand has 159 places, 178 transitions, 1183 flow. Second operand 3 states and 179 transitions. [2024-11-16 19:26:10,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 203 transitions, 1564 flow [2024-11-16 19:26:10,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 203 transitions, 1546 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-16 19:26:10,873 INFO L231 Difference]: Finished difference. Result has 160 places, 163 transitions, 1058 flow [2024-11-16 19:26:10,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1058, PETRI_PLACES=160, PETRI_TRANSITIONS=163} [2024-11-16 19:26:10,873 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 74 predicate places. [2024-11-16 19:26:10,873 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 163 transitions, 1058 flow [2024-11-16 19:26:10,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:10,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:10,874 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:10,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-16 19:26:10,874 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:10,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:10,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2070665271, now seen corresponding path program 1 times [2024-11-16 19:26:10,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:10,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519155830] [2024-11-16 19:26:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:10,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:26:11,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:11,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519155830] [2024-11-16 19:26:11,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519155830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:11,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:11,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:11,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148802587] [2024-11-16 19:26:11,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:11,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:11,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:11,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:11,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:26:11,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 163 transitions, 1058 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:11,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:11,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:26:11,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:12,305 INFO L124 PetriNetUnfolderBase]: 2749/4701 cut-off events. [2024-11-16 19:26:12,305 INFO L125 PetriNetUnfolderBase]: For 3735/3735 co-relation queries the response was YES. [2024-11-16 19:26:12,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12606 conditions, 4701 events. 2749/4701 cut-off events. For 3735/3735 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 26231 event pairs, 2334 based on Foata normal form. 1/3937 useless extension candidates. Maximal degree in co-relation 12569. Up to 4453 conditions per place. [2024-11-16 19:26:12,322 INFO L140 encePairwiseOnDemand]: 115/118 looper letters, 149 selfloop transitions, 1 changer transitions 19/186 dead transitions. [2024-11-16 19:26:12,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 186 transitions, 1447 flow [2024-11-16 19:26:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:26:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:26:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-11-16 19:26:12,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3707627118644068 [2024-11-16 19:26:12,324 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 1058 flow. Second operand 4 states and 175 transitions. [2024-11-16 19:26:12,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 186 transitions, 1447 flow [2024-11-16 19:26:12,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 186 transitions, 1427 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:12,337 INFO L231 Difference]: Finished difference. Result has 153 places, 161 transitions, 1022 flow [2024-11-16 19:26:12,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1022, PETRI_PLACES=153, PETRI_TRANSITIONS=161} [2024-11-16 19:26:12,337 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 67 predicate places. [2024-11-16 19:26:12,338 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 161 transitions, 1022 flow [2024-11-16 19:26:12,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:12,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:12,338 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:12,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-16 19:26:12,338 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:12,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash -255403612, now seen corresponding path program 1 times [2024-11-16 19:26:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:12,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773265532] [2024-11-16 19:26:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-16 19:26:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773265532] [2024-11-16 19:26:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773265532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:12,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:12,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:12,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722464663] [2024-11-16 19:26:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:12,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:12,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 118 [2024-11-16 19:26:12,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 161 transitions, 1022 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:12,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:12,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 118 [2024-11-16 19:26:12,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand