./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-commit-1.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/popl20-commit-1.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 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:28:38,303 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:28:38,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:28:38,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:28:38,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:28:38,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:28:38,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:28:38,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:28:38,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:28:38,433 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:28:38,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:28:38,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:28:38,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:28:38,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:28:38,436 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:28:38,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:28:38,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:28:38,437 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:28:38,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:28:38,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:28:38,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:28:38,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:28:38,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:28:38,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:28:38,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:28:38,447 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:28:38,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:28:38,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:28:38,448 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:28:38,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:28:38,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:28:38,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:28:38,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:28:38,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:28:38,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:28:38,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:28:38,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:28:38,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:28:38,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:28:38,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:28:38,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:28:38,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:28:38,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2024-11-16 19:28:38,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:28:38,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:28:38,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:28:38,711 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:28:38,711 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:28:38,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-11-16 19:28:40,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:28:40,282 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:28:40,282 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-11-16 19:28:40,290 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4124ab207/2622929347c44e29964396da0999160d/FLAGdcc6597a8 [2024-11-16 19:28:40,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4124ab207/2622929347c44e29964396da0999160d [2024-11-16 19:28:40,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:28:40,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:28:40,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:28:40,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:28:40,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:28:40,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:40,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e5ee23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40, skipping insertion in model container [2024-11-16 19:28:40,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:40,702 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:28:40,908 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/popl20-commit-1.wvr.c[4643,4656] [2024-11-16 19:28:40,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:28:40,928 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:28:40,957 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/popl20-commit-1.wvr.c[4643,4656] [2024-11-16 19:28:40,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:28:40,975 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:28:40,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40 WrapperNode [2024-11-16 19:28:40,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:28:40,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:28:40,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:28:40,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:28:40,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:40,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,024 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 331 [2024-11-16 19:28:41,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:28:41,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:28:41,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:28:41,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:28:41,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,083 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-16 19:28:41,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,095 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:28:41,103 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:28:41,104 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:28:41,104 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:28:41,106 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (1/1) ... [2024-11-16 19:28:41,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:28:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:41,134 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 19:28:41,141 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 19:28:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:28:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:28:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:28:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:28:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:28:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:28:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:28:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:28:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:28:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:28:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:28:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:28:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:28:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:28:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:28:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:28:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:28:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:28:41,180 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 19:28:41,284 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:28:41,286 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:28:41,737 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:28:41,737 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:28:42,201 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:28:42,201 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:28:42,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:28:42 BoogieIcfgContainer [2024-11-16 19:28:42,202 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:28:42,205 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:28:42,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:28:42,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:28:42,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:28:40" (1/3) ... [2024-11-16 19:28:42,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566ff346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:28:42, skipping insertion in model container [2024-11-16 19:28:42,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:40" (2/3) ... [2024-11-16 19:28:42,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566ff346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:28:42, skipping insertion in model container [2024-11-16 19:28:42,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:28:42" (3/3) ... [2024-11-16 19:28:42,214 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-11-16 19:28:42,234 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:28:42,234 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:28:42,234 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:28:42,314 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:28:42,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 135 flow [2024-11-16 19:28:42,393 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2024-11-16 19:28:42,393 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:28:42,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 12/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-11-16 19:28:42,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 135 flow [2024-11-16 19:28:42,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 53 transitions, 124 flow [2024-11-16 19:28:42,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:28:42,423 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;@cd61a86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:28:42,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:28:42,446 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:28:42,446 INFO L124 PetriNetUnfolderBase]: 12/52 cut-off events. [2024-11-16 19:28:42,446 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:28:42,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:42,447 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:42,447 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:42,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:42,454 INFO L85 PathProgramCache]: Analyzing trace with hash 66512656, now seen corresponding path program 1 times [2024-11-16 19:28:42,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:42,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290164713] [2024-11-16 19:28:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:42,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:42,667 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 19:28:42,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:42,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290164713] [2024-11-16 19:28:42,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290164713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:42,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:42,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:42,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369129394] [2024-11-16 19:28:42,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:42,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:28:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:28:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:28:42,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-16 19:28:42,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 19:28:42,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:42,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-16 19:28:42,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:43,321 INFO L124 PetriNetUnfolderBase]: 2536/3631 cut-off events. [2024-11-16 19:28:43,321 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-16 19:28:43,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7448 conditions, 3631 events. 2536/3631 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16738 event pairs, 2134 based on Foata normal form. 3/3216 useless extension candidates. Maximal degree in co-relation 7035. Up to 3610 conditions per place. [2024-11-16 19:28:43,351 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 37 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-11-16 19:28:43,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 186 flow [2024-11-16 19:28:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:28:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:28:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 69 transitions. [2024-11-16 19:28:43,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-16 19:28:43,367 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 124 flow. Second operand 2 states and 69 transitions. [2024-11-16 19:28:43,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 186 flow [2024-11-16 19:28:43,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 174 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:28:43,379 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 100 flow [2024-11-16 19:28:43,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-16 19:28:43,386 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2024-11-16 19:28:43,387 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 100 flow [2024-11-16 19:28:43,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 19:28:43,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:43,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:43,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:28:43,388 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:43,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2057188753, now seen corresponding path program 1 times [2024-11-16 19:28:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033324268] [2024-11-16 19:28:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:43,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:43,752 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 19:28:43,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:43,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033324268] [2024-11-16 19:28:43,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033324268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:43,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:43,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148103210] [2024-11-16 19:28:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:43,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:43,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:43,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-16 19:28:43,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:43,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:43,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-16 19:28:43,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:44,345 INFO L124 PetriNetUnfolderBase]: 3499/4998 cut-off events. [2024-11-16 19:28:44,345 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-16 19:28:44,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10080 conditions, 4998 events. 3499/4998 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 25266 event pairs, 876 based on Foata normal form. 1/4374 useless extension candidates. Maximal degree in co-relation 10077. Up to 3852 conditions per place. [2024-11-16 19:28:44,375 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 56 selfloop transitions, 4 changer transitions 1/71 dead transitions. [2024-11-16 19:28:44,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 275 flow [2024-11-16 19:28:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-16 19:28:44,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5906432748538012 [2024-11-16 19:28:44,378 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 100 flow. Second operand 3 states and 101 transitions. [2024-11-16 19:28:44,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 275 flow [2024-11-16 19:28:44,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:28:44,384 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 126 flow [2024-11-16 19:28:44,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2024-11-16 19:28:44,385 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-11-16 19:28:44,386 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 126 flow [2024-11-16 19:28:44,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:44,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:44,386 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:44,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:28:44,387 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:44,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1156730453, now seen corresponding path program 1 times [2024-11-16 19:28:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946713098] [2024-11-16 19:28:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:44,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:44,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946713098] [2024-11-16 19:28:44,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946713098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:44,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:44,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:28:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103027731] [2024-11-16 19:28:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:44,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:44,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-16 19:28:44,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 19:28:44,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:44,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-16 19:28:44,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:45,216 INFO L124 PetriNetUnfolderBase]: 4888/7046 cut-off events. [2024-11-16 19:28:45,217 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-11-16 19:28:45,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15093 conditions, 7046 events. 4888/7046 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 35816 event pairs, 2384 based on Foata normal form. 165/6299 useless extension candidates. Maximal degree in co-relation 15088. Up to 3648 conditions per place. [2024-11-16 19:28:45,252 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 65 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-16 19:28:45,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 322 flow [2024-11-16 19:28:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-16 19:28:45,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-11-16 19:28:45,259 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 126 flow. Second operand 3 states and 105 transitions. [2024-11-16 19:28:45,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 322 flow [2024-11-16 19:28:45,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:28:45,262 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 130 flow [2024-11-16 19:28:45,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-16 19:28:45,264 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-11-16 19:28:45,264 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 130 flow [2024-11-16 19:28:45,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 19:28:45,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:45,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:45,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:28:45,265 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:45,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash -36171277, now seen corresponding path program 1 times [2024-11-16 19:28:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:45,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131485918] [2024-11-16 19:28:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:45,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:45,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:45,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131485918] [2024-11-16 19:28:45,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131485918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:45,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:45,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:28:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660383017] [2024-11-16 19:28:45,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:45,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:45,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:45,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:45,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-16 19:28:45,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 19:28:45,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:45,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-16 19:28:45,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:45,957 INFO L124 PetriNetUnfolderBase]: 3703/5368 cut-off events. [2024-11-16 19:28:45,957 INFO L125 PetriNetUnfolderBase]: For 660/660 co-relation queries the response was YES. [2024-11-16 19:28:45,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11743 conditions, 5368 events. 3703/5368 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 26203 event pairs, 1275 based on Foata normal form. 90/4779 useless extension candidates. Maximal degree in co-relation 11737. Up to 4000 conditions per place. [2024-11-16 19:28:45,995 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 54 selfloop transitions, 2 changer transitions 5/71 dead transitions. [2024-11-16 19:28:45,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 297 flow [2024-11-16 19:28:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-16 19:28:45,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5847953216374269 [2024-11-16 19:28:45,997 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 130 flow. Second operand 3 states and 100 transitions. [2024-11-16 19:28:45,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 297 flow [2024-11-16 19:28:45,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:28:46,001 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 136 flow [2024-11-16 19:28:46,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-16 19:28:46,002 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-11-16 19:28:46,003 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 136 flow [2024-11-16 19:28:46,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 19:28:46,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:46,004 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:46,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:28:46,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:46,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash 290870772, now seen corresponding path program 1 times [2024-11-16 19:28:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989331474] [2024-11-16 19:28:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:46,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989331474] [2024-11-16 19:28:46,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989331474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:46,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:46,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:46,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944722683] [2024-11-16 19:28:46,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:46,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:46,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:46,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-16 19:28:46,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:46,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:46,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-16 19:28:46,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:46,527 INFO L124 PetriNetUnfolderBase]: 2561/3742 cut-off events. [2024-11-16 19:28:46,527 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2024-11-16 19:28:46,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8254 conditions, 3742 events. 2561/3742 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16342 event pairs, 1346 based on Foata normal form. 62/3266 useless extension candidates. Maximal degree in co-relation 8247. Up to 2767 conditions per place. [2024-11-16 19:28:46,541 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 48 selfloop transitions, 2 changer transitions 7/67 dead transitions. [2024-11-16 19:28:46,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 287 flow [2024-11-16 19:28:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-16 19:28:46,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5497076023391813 [2024-11-16 19:28:46,543 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 136 flow. Second operand 3 states and 94 transitions. [2024-11-16 19:28:46,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 287 flow [2024-11-16 19:28:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:28:46,545 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 146 flow [2024-11-16 19:28:46,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-16 19:28:46,546 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-11-16 19:28:46,546 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 146 flow [2024-11-16 19:28:46,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:46,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:46,546 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] [2024-11-16 19:28:46,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:28:46,547 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:46,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash 572128732, now seen corresponding path program 1 times [2024-11-16 19:28:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:46,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566142063] [2024-11-16 19:28:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:46,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:46,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:46,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566142063] [2024-11-16 19:28:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566142063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:46,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:28:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557881245] [2024-11-16 19:28:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:46,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:28:46,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:46,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:28:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:28:46,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-16 19:28:46,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:46,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:46,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-16 19:28:46,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:47,232 INFO L124 PetriNetUnfolderBase]: 3171/4716 cut-off events. [2024-11-16 19:28:47,232 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2024-11-16 19:28:47,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10454 conditions, 4716 events. 3171/4716 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 22104 event pairs, 2856 based on Foata normal form. 56/4045 useless extension candidates. Maximal degree in co-relation 10446. Up to 3726 conditions per place. [2024-11-16 19:28:47,251 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 43 selfloop transitions, 2 changer transitions 29/81 dead transitions. [2024-11-16 19:28:47,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 81 transitions, 360 flow [2024-11-16 19:28:47,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:28:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:28:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-16 19:28:47,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4245614035087719 [2024-11-16 19:28:47,253 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 146 flow. Second operand 5 states and 121 transitions. [2024-11-16 19:28:47,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 81 transitions, 360 flow [2024-11-16 19:28:47,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:28:47,257 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 160 flow [2024-11-16 19:28:47,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-11-16 19:28:47,259 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-11-16 19:28:47,259 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 160 flow [2024-11-16 19:28:47,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:47,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:47,260 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:47,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:28:47,260 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:47,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash -334366471, now seen corresponding path program 1 times [2024-11-16 19:28:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:47,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888383531] [2024-11-16 19:28:47,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:47,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:28:47,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:47,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888383531] [2024-11-16 19:28:47,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888383531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:47,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:47,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:28:47,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129206278] [2024-11-16 19:28:47,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:47,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:28:47,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:47,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:28:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:28:47,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-16 19:28:47,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 19:28:47,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:47,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-16 19:28:47,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:47,898 INFO L124 PetriNetUnfolderBase]: 3337/4978 cut-off events. [2024-11-16 19:28:47,899 INFO L125 PetriNetUnfolderBase]: For 910/910 co-relation queries the response was YES. [2024-11-16 19:28:47,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11136 conditions, 4978 events. 3337/4978 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23733 event pairs, 3018 based on Foata normal form. 14/4238 useless extension candidates. Maximal degree in co-relation 11125. Up to 3723 conditions per place. [2024-11-16 19:28:47,915 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 42 selfloop transitions, 4 changer transitions 35/88 dead transitions. [2024-11-16 19:28:47,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 414 flow [2024-11-16 19:28:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:28:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:28:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-16 19:28:47,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44912280701754387 [2024-11-16 19:28:47,916 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 160 flow. Second operand 5 states and 128 transitions. [2024-11-16 19:28:47,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 414 flow [2024-11-16 19:28:47,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 406 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-16 19:28:47,919 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 180 flow [2024-11-16 19:28:47,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-11-16 19:28:47,920 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-11-16 19:28:47,920 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 180 flow [2024-11-16 19:28:47,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 19:28:47,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:47,920 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-16 19:28:47,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:28:47,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:47,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash 240775542, now seen corresponding path program 1 times [2024-11-16 19:28:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:47,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214042061] [2024-11-16 19:28:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:28:48,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:48,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214042061] [2024-11-16 19:28:48,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214042061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:48,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:48,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:28:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116035162] [2024-11-16 19:28:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:48,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:28:48,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:28:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:28:48,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-16 19:28:48,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 19:28:48,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:48,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-16 19:28:48,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:48,559 INFO L124 PetriNetUnfolderBase]: 3297/4906 cut-off events. [2024-11-16 19:28:48,559 INFO L125 PetriNetUnfolderBase]: For 802/802 co-relation queries the response was YES. [2024-11-16 19:28:48,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10889 conditions, 4906 events. 3297/4906 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23284 event pairs, 2984 based on Foata normal form. 10/4170 useless extension candidates. Maximal degree in co-relation 10877. Up to 3720 conditions per place. [2024-11-16 19:28:48,579 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 41 selfloop transitions, 6 changer transitions 25/79 dead transitions. [2024-11-16 19:28:48,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 392 flow [2024-11-16 19:28:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:28:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:28:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-16 19:28:48,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41754385964912283 [2024-11-16 19:28:48,580 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 180 flow. Second operand 5 states and 119 transitions. [2024-11-16 19:28:48,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 392 flow [2024-11-16 19:28:48,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 372 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-16 19:28:48,587 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 196 flow [2024-11-16 19:28:48,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-11-16 19:28:48,588 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-11-16 19:28:48,588 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 196 flow [2024-11-16 19:28:48,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 19:28:48,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:48,589 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-16 19:28:48,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:28:48,589 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:48,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:48,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1977251230, now seen corresponding path program 1 times [2024-11-16 19:28:48,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:48,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976012129] [2024-11-16 19:28:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:48,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:28:48,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976012129] [2024-11-16 19:28:48,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976012129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943850894] [2024-11-16 19:28:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:48,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:48,843 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 19:28:48,845 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 19:28:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:48,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:28:49,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:28:49,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:28:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943850894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:49,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:28:49,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 19:28:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316502312] [2024-11-16 19:28:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:49,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:28:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:28:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:28:49,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-16 19:28:49,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:49,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:49,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-16 19:28:49,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:49,869 INFO L124 PetriNetUnfolderBase]: 5255/7626 cut-off events. [2024-11-16 19:28:49,869 INFO L125 PetriNetUnfolderBase]: For 2202/2202 co-relation queries the response was YES. [2024-11-16 19:28:49,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17571 conditions, 7626 events. 5255/7626 cut-off events. For 2202/2202 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 35207 event pairs, 2749 based on Foata normal form. 156/6711 useless extension candidates. Maximal degree in co-relation 17558. Up to 2981 conditions per place. [2024-11-16 19:28:49,918 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 85 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2024-11-16 19:28:49,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 528 flow [2024-11-16 19:28:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:28:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:28:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-16 19:28:49,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6096491228070176 [2024-11-16 19:28:49,920 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 196 flow. Second operand 4 states and 139 transitions. [2024-11-16 19:28:49,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 528 flow [2024-11-16 19:28:49,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 506 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-16 19:28:49,927 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 237 flow [2024-11-16 19:28:49,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-16 19:28:49,928 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-11-16 19:28:49,928 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 237 flow [2024-11-16 19:28:49,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:49,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:49,929 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] [2024-11-16 19:28:49,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:28:50,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:50,131 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:50,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:50,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1993665834, now seen corresponding path program 1 times [2024-11-16 19:28:50,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:50,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443628907] [2024-11-16 19:28:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:50,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:28:50,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443628907] [2024-11-16 19:28:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443628907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400520567] [2024-11-16 19:28:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:50,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:50,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:50,394 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 19:28:50,395 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 19:28:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:50,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:28:50,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:28:50,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:28:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:28:50,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400520567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:28:50,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:28:50,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 19:28:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517914681] [2024-11-16 19:28:50,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:28:50,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:28:50,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:50,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:28:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:28:50,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-16 19:28:50,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 237 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 19:28:50,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:50,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-16 19:28:50,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:51,490 INFO L124 PetriNetUnfolderBase]: 6007/8824 cut-off events. [2024-11-16 19:28:51,490 INFO L125 PetriNetUnfolderBase]: For 4187/4187 co-relation queries the response was YES. [2024-11-16 19:28:51,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21997 conditions, 8824 events. 6007/8824 cut-off events. For 4187/4187 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 42873 event pairs, 5125 based on Foata normal form. 2/7541 useless extension candidates. Maximal degree in co-relation 21984. Up to 7604 conditions per place. [2024-11-16 19:28:51,534 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 51 selfloop transitions, 3 changer transitions 46/107 dead transitions. [2024-11-16 19:28:51,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 579 flow [2024-11-16 19:28:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:28:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:28:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-11-16 19:28:51,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39348370927318294 [2024-11-16 19:28:51,536 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 237 flow. Second operand 7 states and 157 transitions. [2024-11-16 19:28:51,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 579 flow [2024-11-16 19:28:51,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 107 transitions, 571 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-16 19:28:51,548 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 253 flow [2024-11-16 19:28:51,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2024-11-16 19:28:51,550 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-11-16 19:28:51,551 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 253 flow [2024-11-16 19:28:51,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 19:28:51,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:51,551 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-16 19:28:51,570 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 19:28:51,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 19:28:51,752 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:51,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash -841397083, now seen corresponding path program 2 times [2024-11-16 19:28:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:51,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670981045] [2024-11-16 19:28:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:51,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:28:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670981045] [2024-11-16 19:28:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670981045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676259556] [2024-11-16 19:28:51,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:28:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:51,950 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 19:28:51,952 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 19:28:52,088 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:28:52,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:28:52,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:28:52,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 19:28:52,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:28:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 19:28:52,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676259556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:28:52,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:28:52,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-16 19:28:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029880328] [2024-11-16 19:28:52,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:28:52,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:28:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:52,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:28:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:28:52,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-16 19:28:52,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 19:28:52,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:52,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-16 19:28:52,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:53,026 INFO L124 PetriNetUnfolderBase]: 6488/9671 cut-off events. [2024-11-16 19:28:53,026 INFO L125 PetriNetUnfolderBase]: For 5787/5787 co-relation queries the response was YES. [2024-11-16 19:28:53,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24181 conditions, 9671 events. 6488/9671 cut-off events. For 5787/5787 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 48719 event pairs, 5339 based on Foata normal form. 345/8635 useless extension candidates. Maximal degree in co-relation 24163. Up to 7600 conditions per place. [2024-11-16 19:28:53,078 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 49 selfloop transitions, 6 changer transitions 57/119 dead transitions. [2024-11-16 19:28:53,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 691 flow [2024-11-16 19:28:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:28:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:28:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-11-16 19:28:53,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3269537480063796 [2024-11-16 19:28:53,081 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 253 flow. Second operand 11 states and 205 transitions. [2024-11-16 19:28:53,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 691 flow [2024-11-16 19:28:53,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 673 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-16 19:28:53,089 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 273 flow [2024-11-16 19:28:53,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=273, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2024-11-16 19:28:53,090 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-11-16 19:28:53,090 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 273 flow [2024-11-16 19:28:53,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 19:28:53,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:53,091 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2024-11-16 19:28:53,108 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 19:28:53,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:53,292 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:53,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash 851247586, now seen corresponding path program 3 times [2024-11-16 19:28:53,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:53,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615482942] [2024-11-16 19:28:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:57,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615482942] [2024-11-16 19:28:57,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615482942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596724960] [2024-11-16 19:28:57,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:28:57,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:57,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:57,554 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 19:28:57,555 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 19:28:57,761 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 19:28:57,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:28:57,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-16 19:28:57,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:58,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 19:29:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:29:00,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:29:08,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:08,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 379 treesize of output 381 [2024-11-16 19:29:08,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-16 19:29:08,573 INFO L349 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2024-11-16 19:29:08,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 157 [2024-11-16 19:29:09,073 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:29:09,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 124 treesize of output 103 [2024-11-16 19:29:09,236 INFO L349 Elim1Store]: treesize reduction 5, result has 96.4 percent of original size [2024-11-16 19:29:09,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 649 treesize of output 610 [2024-11-16 19:29:13,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:13,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 755 treesize of output 735 [2024-11-16 19:29:13,554 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 19:29:13,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 73 treesize of output 61 [2024-11-16 19:29:13,770 INFO L349 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size [2024-11-16 19:29:13,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 203 treesize of output 254 [2024-11-16 19:29:15,522 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:29:15,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 124 treesize of output 103 [2024-11-16 19:29:16,656 INFO L349 Elim1Store]: treesize reduction 18, result has 95.3 percent of original size [2024-11-16 19:29:16,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 558 treesize of output 770 [2024-11-16 19:29:28,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:28,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 602 treesize of output 590 [2024-11-16 19:29:28,451 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:29:28,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 70 treesize of output 61 [2024-11-16 19:29:28,899 INFO L349 Elim1Store]: treesize reduction 10, result has 87.7 percent of original size [2024-11-16 19:29:28,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 212 [2024-11-16 19:29:29,997 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:29:29,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 124 treesize of output 103 [2024-11-16 19:29:31,336 INFO L349 Elim1Store]: treesize reduction 88, result has 70.2 percent of original size [2024-11-16 19:29:31,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1571 treesize of output 1270 [2024-11-16 19:29:34,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:34,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 456 treesize of output 452 [2024-11-16 19:29:34,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2024-11-16 19:29:34,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2024-11-16 19:29:34,512 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:29:34,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 70 treesize of output 61 [2024-11-16 19:29:34,585 INFO L349 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size [2024-11-16 19:29:34,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 328 treesize of output 319 [2024-11-16 19:29:35,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:35,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 609 treesize of output 597 [2024-11-16 19:29:35,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2024-11-16 19:29:35,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2024-11-16 19:29:35,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 19:29:35,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-16 19:29:35,527 INFO L349 Elim1Store]: treesize reduction 13, result has 87.4 percent of original size [2024-11-16 19:29:35,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 335 treesize of output 348 [2024-11-16 19:29:36,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:36,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 761 treesize of output 741 [2024-11-16 19:29:36,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 19:29:36,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-16 19:29:37,155 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:29:37,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 124 treesize of output 103 [2024-11-16 19:29:37,239 INFO L349 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2024-11-16 19:29:37,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 157 [2024-11-16 19:29:38,041 INFO L349 Elim1Store]: treesize reduction 132, result has 52.0 percent of original size [2024-11-16 19:29:38,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 405 treesize of output 433 [2024-11-16 19:29:38,210 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-16 19:29:38,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 521 treesize of output 1 [2024-11-16 19:29:38,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:38,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 375 treesize of output 377 [2024-11-16 19:29:38,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-16 19:29:38,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-16 19:29:38,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:38,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 61 treesize of output 65 [2024-11-16 19:29:38,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2024-11-16 19:29:38,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2024-11-16 19:29:38,673 INFO L349 Elim1Store]: treesize reduction 5, result has 92.6 percent of original size [2024-11-16 19:29:38,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 319 treesize of output 302 [2024-11-16 19:29:39,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:29:39,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 243 [2024-11-16 19:29:39,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-16 19:29:39,450 INFO L349 Elim1Store]: treesize reduction 17, result has 79.5 percent of original size [2024-11-16 19:29:39,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 149 treesize of output 165 [2024-11-16 19:29:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:29:40,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596724960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:29:40,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:29:40,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 65 [2024-11-16 19:29:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975179588] [2024-11-16 19:29:40,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:29:40,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-16 19:29:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:29:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-16 19:29:40,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=3744, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 19:29:40,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-16 19:29:40,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 273 flow. Second operand has 66 states, 66 states have (on average 12.045454545454545) internal successors, (795), 66 states have internal predecessors, (795), 0 states have call successors, (0), 0 states 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 19:29:40,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:29:40,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-16 19:29:40,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand