./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:25:53,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:25:53,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:25:53,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:25:53,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:25:53,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:25:53,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:25:53,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:25:53,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:25:53,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:25:53,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:25:53,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:25:53,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:25:53,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:25:53,524 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:25:53,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:25:53,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:25:53,528 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:25:53,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:25:53,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:25:53,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:25:53,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:25:53,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:25:53,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:25:53,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:25:53,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:25:53,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:25:53,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:25:53,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:25:53,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:25:53,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:25:53,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:25:53,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:25:53,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:25:53,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:25:53,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:25:53,535 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:25:53,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:25:53,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:25:53,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:25:53,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:25:53,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:25:53,537 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2024-10-11 14:25:53,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:25:53,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:25:53,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:25:53,841 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:25:53,841 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:25:53,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-10-11 14:25:55,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:25:55,465 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:25:55,466 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-10-11 14:25:55,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8e9723655/b15572e256a541dd93ef660ad747595c/FLAGcf585a4b8 [2024-10-11 14:25:55,862 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8e9723655/b15572e256a541dd93ef660ad747595c [2024-10-11 14:25:55,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:25:55,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:25:55,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:25:55,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:25:55,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:25:55,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:55" (1/1) ... [2024-10-11 14:25:55,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd30d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:55, skipping insertion in model container [2024-10-11 14:25:55,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:55" (1/1) ... [2024-10-11 14:25:55,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:25:56,097 WARN L248 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/bench-exp3x3.wvr.c[2703,2716] [2024-10-11 14:25:56,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:25:56,110 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:25:56,136 WARN L248 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/bench-exp3x3.wvr.c[2703,2716] [2024-10-11 14:25:56,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:25:56,154 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:25:56,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56 WrapperNode [2024-10-11 14:25:56,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:25:56,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:25:56,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:25:56,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:25:56,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,192 INFO L138 Inliner]: procedures = 21, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-10-11 14:25:56,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:25:56,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:25:56,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:25:56,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:25:56,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,207 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,221 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 14:25:56,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:25:56,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:25:56,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:25:56,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:25:56,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2024-10-11 14:25:56,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:25:56,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:25:56,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:25:56,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:25:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:25:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:25:56,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:25:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:25:56,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:25:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:25:56,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:25:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 14:25:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 14:25:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:25:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-11 14:25:56,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-11 14:25:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-10-11 14:25:56,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-10-11 14:25:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:25:56,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:25:56,331 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:25:56,482 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:25:56,485 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:25:56,752 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:25:56,753 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:25:56,901 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:25:56,902 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 14:25:56,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:56 BoogieIcfgContainer [2024-10-11 14:25:56,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:25:56,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:25:56,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:25:56,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:25:56,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:55" (1/3) ... [2024-10-11 14:25:56,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecf55ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:56, skipping insertion in model container [2024-10-11 14:25:56,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (2/3) ... [2024-10-11 14:25:56,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecf55ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:56, skipping insertion in model container [2024-10-11 14:25:56,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:56" (3/3) ... [2024-10-11 14:25:56,910 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-10-11 14:25:56,927 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:25:56,927 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:25:56,927 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:25:57,012 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-10-11 14:25:57,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2024-10-11 14:25:57,094 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-10-11 14:25:57,095 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 14:25:57,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-11 14:25:57,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2024-10-11 14:25:57,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2024-10-11 14:25:57,120 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:25:57,128 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;@3467bd8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:25:57,129 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 14:25:57,156 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:25:57,158 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-10-11 14:25:57,158 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 14:25:57,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:57,159 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] [2024-10-11 14:25:57,159 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 4 more)] === [2024-10-11 14:25:57,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2065069486, now seen corresponding path program 1 times [2024-10-11 14:25:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:57,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129571259] [2024-10-11 14:25:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:57,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:25:57,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:57,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129571259] [2024-10-11 14:25:57,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129571259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:25:57,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:25:57,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:25:57,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638082620] [2024-10-11 14:25:57,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:25:57,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:25:57,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:25:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:25:57,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:25:57,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:25:57,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:57,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:25:57,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:59,985 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2024-10-11 14:25:59,987 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2024-10-11 14:26:00,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44837 conditions, 21812 events. 18895/21812 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 69696 event pairs, 1570 based on Foata normal form. 1/11916 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2024-10-11 14:26:00,162 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2024-10-11 14:26:00,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-10-11 14:26:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:26:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:26:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-11 14:26:00,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2024-10-11 14:26:00,177 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2024-10-11 14:26:00,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-10-11 14:26:00,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-10-11 14:26:00,205 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2024-10-11 14:26:00,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2024-10-11 14:26:00,211 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2024-10-11 14:26:00,212 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2024-10-11 14:26:00,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:00,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:00,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:00,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:26:00,213 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 4 more)] === [2024-10-11 14:26:00,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash -964997093, now seen corresponding path program 1 times [2024-10-11 14:26:00,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:00,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034735524] [2024-10-11 14:26:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:00,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:00,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034735524] [2024-10-11 14:26:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034735524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:00,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059318322] [2024-10-11 14:26:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:00,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:00,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:00,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:00,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:00,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:00,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:00,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:00,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:02,535 INFO L124 PetriNetUnfolderBase]: 23877/27726 cut-off events. [2024-10-11 14:26:02,536 INFO L125 PetriNetUnfolderBase]: For 6138/6138 co-relation queries the response was YES. [2024-10-11 14:26:02,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68956 conditions, 27726 events. 23877/27726 cut-off events. For 6138/6138 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 95814 event pairs, 2287 based on Foata normal form. 294/27956 useless extension candidates. Maximal degree in co-relation 18873. Up to 12310 conditions per place. [2024-10-11 14:26:02,712 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 106 selfloop transitions, 10 changer transitions 0/123 dead transitions. [2024-10-11 14:26:02,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 123 transitions, 595 flow [2024-10-11 14:26:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-10-11 14:26:02,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7434782608695653 [2024-10-11 14:26:02,716 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 171 transitions. [2024-10-11 14:26:02,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 123 transitions, 595 flow [2024-10-11 14:26:02,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 123 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:02,722 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2024-10-11 14:26:02,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2024-10-11 14:26:02,724 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-10-11 14:26:02,724 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2024-10-11 14:26:02,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:02,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:02,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:02,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:26:02,726 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 4 more)] === [2024-10-11 14:26:02,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1137220446, now seen corresponding path program 1 times [2024-10-11 14:26:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:02,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570935168] [2024-10-11 14:26:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:02,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570935168] [2024-10-11 14:26:02,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570935168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:02,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:02,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:02,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760862182] [2024-10-11 14:26:02,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:02,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:02,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:02,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:02,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:02,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:02,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:05,065 INFO L124 PetriNetUnfolderBase]: 23487/27336 cut-off events. [2024-10-11 14:26:05,065 INFO L125 PetriNetUnfolderBase]: For 19651/19651 co-relation queries the response was YES. [2024-10-11 14:26:05,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77644 conditions, 27336 events. 23487/27336 cut-off events. For 19651/19651 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 95913 event pairs, 1822 based on Foata normal form. 390/27662 useless extension candidates. Maximal degree in co-relation 40073. Up to 11920 conditions per place. [2024-10-11 14:26:05,252 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 105 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-10-11 14:26:05,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 120 transitions, 612 flow [2024-10-11 14:26:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-10-11 14:26:05,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-10-11 14:26:05,257 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 169 transitions. [2024-10-11 14:26:05,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 120 transitions, 612 flow [2024-10-11 14:26:05,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 120 transitions, 612 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:26:05,280 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 209 flow [2024-10-11 14:26:05,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-10-11 14:26:05,282 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-10-11 14:26:05,282 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 209 flow [2024-10-11 14:26:05,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:05,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:05,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:05,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:26:05,284 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 4 more)] === [2024-10-11 14:26:05,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2008324451, now seen corresponding path program 1 times [2024-10-11 14:26:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:05,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745918007] [2024-10-11 14:26:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:05,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:05,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:05,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745918007] [2024-10-11 14:26:05,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745918007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:05,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:05,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:05,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684875679] [2024-10-11 14:26:05,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:05,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:05,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:05,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:05,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:05,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:05,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:05,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:07,612 INFO L124 PetriNetUnfolderBase]: 31533/37371 cut-off events. [2024-10-11 14:26:07,613 INFO L125 PetriNetUnfolderBase]: For 44541/44541 co-relation queries the response was YES. [2024-10-11 14:26:07,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113751 conditions, 37371 events. 31533/37371 cut-off events. For 44541/44541 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 148585 event pairs, 4697 based on Foata normal form. 768/37856 useless extension candidates. Maximal degree in co-relation 59685. Up to 18028 conditions per place. [2024-10-11 14:26:07,839 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 121 selfloop transitions, 8 changer transitions 0/136 dead transitions. [2024-10-11 14:26:07,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 136 transitions, 844 flow [2024-10-11 14:26:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-10-11 14:26:07,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2024-10-11 14:26:07,842 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 209 flow. Second operand 5 states and 166 transitions. [2024-10-11 14:26:07,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 136 transitions, 844 flow [2024-10-11 14:26:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 136 transitions, 825 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:07,856 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 257 flow [2024-10-11 14:26:07,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-10-11 14:26:07,857 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-10-11 14:26:07,858 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 257 flow [2024-10-11 14:26:07,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:07,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:07,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:07,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:26:07,859 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 4 more)] === [2024-10-11 14:26:07,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:07,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2093612161, now seen corresponding path program 2 times [2024-10-11 14:26:07,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:07,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002282911] [2024-10-11 14:26:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:07,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:07,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:07,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002282911] [2024-10-11 14:26:07,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002282911] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:07,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:07,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:07,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870282361] [2024-10-11 14:26:07,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:07,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:07,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:07,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:07,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:07,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:07,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:07,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:07,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:07,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:10,095 INFO L124 PetriNetUnfolderBase]: 27965/32957 cut-off events. [2024-10-11 14:26:10,096 INFO L125 PetriNetUnfolderBase]: For 48148/48148 co-relation queries the response was YES. [2024-10-11 14:26:10,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114390 conditions, 32957 events. 27965/32957 cut-off events. For 48148/48148 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 123947 event pairs, 1761 based on Foata normal form. 416/33282 useless extension candidates. Maximal degree in co-relation 61594. Up to 14423 conditions per place. [2024-10-11 14:26:10,282 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 11 changer transitions 0/142 dead transitions. [2024-10-11 14:26:10,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 142 transitions, 927 flow [2024-10-11 14:26:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-10-11 14:26:10,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7086956521739131 [2024-10-11 14:26:10,284 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 257 flow. Second operand 5 states and 163 transitions. [2024-10-11 14:26:10,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 142 transitions, 927 flow [2024-10-11 14:26:10,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 142 transitions, 927 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:26:10,450 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 318 flow [2024-10-11 14:26:10,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-10-11 14:26:10,451 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-10-11 14:26:10,451 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 318 flow [2024-10-11 14:26:10,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:10,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:10,451 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:10,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:26:10,452 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 4 more)] === [2024-10-11 14:26:10,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1588974486, now seen corresponding path program 1 times [2024-10-11 14:26:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141658761] [2024-10-11 14:26:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:10,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:10,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141658761] [2024-10-11 14:26:10,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141658761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:10,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:10,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:10,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056920966] [2024-10-11 14:26:10,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:10,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:10,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:10,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:10,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:10,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:10,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:10,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:10,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:12,699 INFO L124 PetriNetUnfolderBase]: 27528/32520 cut-off events. [2024-10-11 14:26:12,699 INFO L125 PetriNetUnfolderBase]: For 59590/59590 co-relation queries the response was YES. [2024-10-11 14:26:12,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119271 conditions, 32520 events. 27528/32520 cut-off events. For 59590/59590 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 124047 event pairs, 1418 based on Foata normal form. 437/32866 useless extension candidates. Maximal degree in co-relation 64676. Up to 14426 conditions per place. [2024-10-11 14:26:12,960 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2024-10-11 14:26:12,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 139 transitions, 936 flow [2024-10-11 14:26:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-10-11 14:26:12,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 14:26:12,962 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 318 flow. Second operand 5 states and 161 transitions. [2024-10-11 14:26:12,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 139 transitions, 936 flow [2024-10-11 14:26:13,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 139 transitions, 925 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:13,278 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 321 flow [2024-10-11 14:26:13,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-10-11 14:26:13,279 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-10-11 14:26:13,279 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 321 flow [2024-10-11 14:26:13,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:13,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:13,279 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:13,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:26:13,280 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 4 more)] === [2024-10-11 14:26:13,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash -71515683, now seen corresponding path program 1 times [2024-10-11 14:26:13,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:13,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128849701] [2024-10-11 14:26:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:13,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:13,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:13,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128849701] [2024-10-11 14:26:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128849701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19106702] [2024-10-11 14:26:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:13,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:13,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:13,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:13,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:26:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:13,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 14:26:13,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:26:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:13,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:26:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:13,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19106702] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:26:13,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:26:13,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-11 14:26:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124692628] [2024-10-11 14:26:13,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:26:13,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:26:13,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:26:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:26:13,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:13,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:13,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:13,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:13,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:16,591 INFO L124 PetriNetUnfolderBase]: 36429/43893 cut-off events. [2024-10-11 14:26:16,591 INFO L125 PetriNetUnfolderBase]: For 112035/112035 co-relation queries the response was YES. [2024-10-11 14:26:16,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168737 conditions, 43893 events. 36429/43893 cut-off events. For 112035/112035 co-relation queries the response was YES. Maximal size of possible extension queue 1695. Compared 191238 event pairs, 5834 based on Foata normal form. 776/44018 useless extension candidates. Maximal degree in co-relation 96482. Up to 19072 conditions per place. [2024-10-11 14:26:16,947 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 147 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2024-10-11 14:26:16,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 162 transitions, 1254 flow [2024-10-11 14:26:16,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-11 14:26:16,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2024-10-11 14:26:16,948 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 321 flow. Second operand 5 states and 156 transitions. [2024-10-11 14:26:16,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 162 transitions, 1254 flow [2024-10-11 14:26:16,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 162 transitions, 1219 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:17,001 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 365 flow [2024-10-11 14:26:17,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-10-11 14:26:17,001 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-10-11 14:26:17,001 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 365 flow [2024-10-11 14:26:17,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:17,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:17,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:17,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 14:26:17,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:17,203 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 4 more)] === [2024-10-11 14:26:17,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:17,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1513196829, now seen corresponding path program 2 times [2024-10-11 14:26:17,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:17,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528765724] [2024-10-11 14:26:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:17,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:17,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528765724] [2024-10-11 14:26:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528765724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:17,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:17,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:17,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388390120] [2024-10-11 14:26:17,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:17,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:17,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:17,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:17,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:17,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:17,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:17,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:17,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:17,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:19,916 INFO L124 PetriNetUnfolderBase]: 32687/39219 cut-off events. [2024-10-11 14:26:19,916 INFO L125 PetriNetUnfolderBase]: For 98811/98811 co-relation queries the response was YES. [2024-10-11 14:26:19,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164337 conditions, 39219 events. 32687/39219 cut-off events. For 98811/98811 co-relation queries the response was YES. Maximal size of possible extension queue 1474. Compared 162622 event pairs, 2185 based on Foata normal form. 386/39242 useless extension candidates. Maximal degree in co-relation 106931. Up to 16920 conditions per place. [2024-10-11 14:26:20,178 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 152 selfloop transitions, 11 changer transitions 0/170 dead transitions. [2024-10-11 14:26:20,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 170 transitions, 1346 flow [2024-10-11 14:26:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-10-11 14:26:20,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-10-11 14:26:20,180 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 365 flow. Second operand 5 states and 155 transitions. [2024-10-11 14:26:20,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 170 transitions, 1346 flow [2024-10-11 14:26:20,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 1346 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:26:20,747 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 426 flow [2024-10-11 14:26:20,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-10-11 14:26:20,748 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-10-11 14:26:20,748 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 426 flow [2024-10-11 14:26:20,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:20,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:20,749 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:20,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:26:20,749 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 4 more)] === [2024-10-11 14:26:20,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1466637382, now seen corresponding path program 1 times [2024-10-11 14:26:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107220441] [2024-10-11 14:26:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:20,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107220441] [2024-10-11 14:26:20,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107220441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:20,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:20,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137459817] [2024-10-11 14:26:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:20,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:20,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:20,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:20,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:20,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:20,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:23,519 INFO L124 PetriNetUnfolderBase]: 32297/38829 cut-off events. [2024-10-11 14:26:23,520 INFO L125 PetriNetUnfolderBase]: For 109998/109998 co-relation queries the response was YES. [2024-10-11 14:26:23,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170786 conditions, 38829 events. 32297/38829 cut-off events. For 109998/109998 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 162554 event pairs, 1846 based on Foata normal form. 390/38856 useless extension candidates. Maximal degree in co-relation 111214. Up to 17265 conditions per place. [2024-10-11 14:26:23,781 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 152 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-10-11 14:26:23,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 167 transitions, 1355 flow [2024-10-11 14:26:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-10-11 14:26:23,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-10-11 14:26:23,782 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 426 flow. Second operand 5 states and 153 transitions. [2024-10-11 14:26:23,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 167 transitions, 1355 flow [2024-10-11 14:26:24,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 167 transitions, 1344 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:24,353 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 429 flow [2024-10-11 14:26:24,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-10-11 14:26:24,354 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-10-11 14:26:24,355 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 429 flow [2024-10-11 14:26:24,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:24,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:24,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:24,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:26:24,355 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 4 more)] === [2024-10-11 14:26:24,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1284560570, now seen corresponding path program 2 times [2024-10-11 14:26:24,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:24,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864187087] [2024-10-11 14:26:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864187087] [2024-10-11 14:26:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864187087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:24,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872279711] [2024-10-11 14:26:24,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:24,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:24,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:24,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:24,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:24,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:24,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:27,201 INFO L124 PetriNetUnfolderBase]: 31525/38201 cut-off events. [2024-10-11 14:26:27,202 INFO L125 PetriNetUnfolderBase]: For 112708/112708 co-relation queries the response was YES. [2024-10-11 14:26:27,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171232 conditions, 38201 events. 31525/38201 cut-off events. For 112708/112708 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 166762 event pairs, 5456 based on Foata normal form. 772/38466 useless extension candidates. Maximal degree in co-relation 111509. Up to 19731 conditions per place. [2024-10-11 14:26:27,470 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 147 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2024-10-11 14:26:27,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 162 transitions, 1326 flow [2024-10-11 14:26:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-10-11 14:26:27,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6565217391304348 [2024-10-11 14:26:27,472 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 429 flow. Second operand 5 states and 151 transitions. [2024-10-11 14:26:27,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 162 transitions, 1326 flow [2024-10-11 14:26:27,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 162 transitions, 1313 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:27,727 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 469 flow [2024-10-11 14:26:27,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-10-11 14:26:27,728 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-10-11 14:26:27,728 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 469 flow [2024-10-11 14:26:27,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:27,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:27,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:27,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:26:27,729 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 4 more)] === [2024-10-11 14:26:27,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:27,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1077542136, now seen corresponding path program 2 times [2024-10-11 14:26:27,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:27,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4708650] [2024-10-11 14:26:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:27,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:27,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4708650] [2024-10-11 14:26:27,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4708650] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:27,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:27,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:27,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83899670] [2024-10-11 14:26:27,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:27,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:27,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:27,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:27,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:27,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:27,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:27,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:27,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:30,763 INFO L124 PetriNetUnfolderBase]: 30541/37013 cut-off events. [2024-10-11 14:26:30,763 INFO L125 PetriNetUnfolderBase]: For 114341/114629 co-relation queries the response was YES. [2024-10-11 14:26:30,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172685 conditions, 37013 events. 30541/37013 cut-off events. For 114341/114629 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 161360 event pairs, 5914 based on Foata normal form. 1032/37826 useless extension candidates. Maximal degree in co-relation 155609. Up to 20395 conditions per place. [2024-10-11 14:26:31,071 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 167 selfloop transitions, 8 changer transitions 0/182 dead transitions. [2024-10-11 14:26:31,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 182 transitions, 1554 flow [2024-10-11 14:26:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-10-11 14:26:31,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.691304347826087 [2024-10-11 14:26:31,073 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 469 flow. Second operand 5 states and 159 transitions. [2024-10-11 14:26:31,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 182 transitions, 1554 flow [2024-10-11 14:26:31,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 182 transitions, 1492 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-10-11 14:26:31,529 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 500 flow [2024-10-11 14:26:31,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=500, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-10-11 14:26:31,530 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-10-11 14:26:31,530 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 500 flow [2024-10-11 14:26:31,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:31,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:31,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:31,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:26:31,531 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 4 more)] === [2024-10-11 14:26:31,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1587236977, now seen corresponding path program 2 times [2024-10-11 14:26:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14462522] [2024-10-11 14:26:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:31,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14462522] [2024-10-11 14:26:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14462522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:31,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:31,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291252874] [2024-10-11 14:26:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:31,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:31,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:31,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:31,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:31,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 500 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:31,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:31,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:31,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:34,346 INFO L124 PetriNetUnfolderBase]: 29565/35979 cut-off events. [2024-10-11 14:26:34,346 INFO L125 PetriNetUnfolderBase]: For 132527/132783 co-relation queries the response was YES. [2024-10-11 14:26:34,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172134 conditions, 35979 events. 29565/35979 cut-off events. For 132527/132783 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 161874 event pairs, 7482 based on Foata normal form. 1020/36788 useless extension candidates. Maximal degree in co-relation 155985. Up to 19791 conditions per place. [2024-10-11 14:26:35,002 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 199 selfloop transitions, 8 changer transitions 0/214 dead transitions. [2024-10-11 14:26:35,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 214 transitions, 1853 flow [2024-10-11 14:26:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-10-11 14:26:35,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-10-11 14:26:35,003 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 500 flow. Second operand 5 states and 170 transitions. [2024-10-11 14:26:35,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 214 transitions, 1853 flow [2024-10-11 14:26:35,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 214 transitions, 1791 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-10-11 14:26:35,189 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 530 flow [2024-10-11 14:26:35,190 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2024-10-11 14:26:35,190 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-10-11 14:26:35,190 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 530 flow [2024-10-11 14:26:35,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:35,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:35,191 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:35,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:26:35,191 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:26:35,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1944060164, now seen corresponding path program 2 times [2024-10-11 14:26:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:35,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722066921] [2024-10-11 14:26:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:35,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:35,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:35,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722066921] [2024-10-11 14:26:35,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722066921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:26:35,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:26:35,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:26:35,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632298089] [2024-10-11 14:26:35,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:26:35,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:26:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:26:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:26:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:26:35,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-11 14:26:35,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:35,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:26:35,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-11 14:26:35,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:26:38,084 INFO L124 PetriNetUnfolderBase]: 28729/35143 cut-off events. [2024-10-11 14:26:38,085 INFO L125 PetriNetUnfolderBase]: For 138356/138612 co-relation queries the response was YES. [2024-10-11 14:26:38,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173820 conditions, 35143 events. 28729/35143 cut-off events. For 138356/138612 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 159095 event pairs, 8432 based on Foata normal form. 876/35808 useless extension candidates. Maximal degree in co-relation 157576. Up to 19637 conditions per place. [2024-10-11 14:26:38,356 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 199 selfloop transitions, 8 changer transitions 0/214 dead transitions. [2024-10-11 14:26:38,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 214 transitions, 1842 flow [2024-10-11 14:26:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:26:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:26:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-11 14:26:38,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7260869565217392 [2024-10-11 14:26:38,357 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 530 flow. Second operand 5 states and 167 transitions. [2024-10-11 14:26:38,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 214 transitions, 1842 flow [2024-10-11 14:26:38,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 214 transitions, 1833 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 14:26:38,582 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 578 flow [2024-10-11 14:26:38,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-10-11 14:26:38,583 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-10-11 14:26:38,584 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 578 flow [2024-10-11 14:26:38,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:26:38,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:26:38,584 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:26:38,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:26:38,584 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:26:38,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:26:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash 776290359, now seen corresponding path program 1 times [2024-10-11 14:26:38,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:26:38,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220261120] [2024-10-11 14:26:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:38,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:26:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:26:39,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:26:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220261120] [2024-10-11 14:26:39,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220261120] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:26:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023953072] [2024-10-11 14:26:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:26:39,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:26:39,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:26:39,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:26:39,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:26:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:26:39,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:26:39,907 INFO L278 TraceCheckSpWp]: Computing forward predicates...