./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-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:34:24,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:34:24,747 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:34:24,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:34:24,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:34:24,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:34:24,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:34:24,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:34:24,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:34:24,778 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:34:24,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:34:24,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:34:24,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:34:24,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:34:24,782 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:34:24,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:34:24,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:34:24,783 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:34:24,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:34:24,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:34:24,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:34:24,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:34:24,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:34:24,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:34:24,788 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:34:24,788 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:34:24,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:34:24,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:34:24,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:34:24,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:34:24,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:34:24,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:34:24,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:34:24,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:34:24,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:34:24,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:34:24,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:34:24,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:34:24,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:34:24,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:34:24,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:34:24,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:34:24,793 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2024-11-20 09:34:25,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:34:25,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:34:25,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:34:25,108 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:34:25,109 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:34:25,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-20 09:34:26,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:34:26,818 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:34:26,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-20 09:34:26,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89c5bf87/bbe2c56875824deaa8c18c3a25e2b40b/FLAG2a3e6c024 [2024-11-20 09:34:26,846 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89c5bf87/bbe2c56875824deaa8c18c3a25e2b40b [2024-11-20 09:34:26,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:34:26,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:34:26,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:34:26,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:34:26,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:34:26,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:26" (1/1) ... [2024-11-20 09:34:26,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed95287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:26, skipping insertion in model container [2024-11-20 09:34:26,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:26" (1/1) ... [2024-11-20 09:34:26,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:34:27,112 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-11-20 09:34:27,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:34:27,134 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:34:27,155 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-11-20 09:34:27,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:34:27,173 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:34:27,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27 WrapperNode [2024-11-20 09:34:27,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:34:27,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:34:27,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:34:27,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:34:27,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,216 INFO L138 Inliner]: procedures = 24, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-20 09:34:27,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:34:27,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:34:27,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:34:27,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:34:27,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,257 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]. [2024-11-20 09:34:27,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:34:27,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:34:27,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:34:27,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:34:27,275 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (1/1) ... [2024-11-20 09:34:27,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:34:27,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:27,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:34:27,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:34:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:34:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:34:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:34:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:34:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:34:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:34:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:34:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-20 09:34:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-20 09:34:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:34:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-20 09:34:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-20 09:34:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-20 09:34:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-20 09:34:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:34:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:34:27,372 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:34:27,475 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:34:27,477 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:34:27,799 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:34:27,799 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:34:27,978 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:34:27,979 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-20 09:34:27,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:27 BoogieIcfgContainer [2024-11-20 09:34:27,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:34:27,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:34:27,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:34:27,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:34:27,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:34:26" (1/3) ... [2024-11-20 09:34:27,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c68349d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:27, skipping insertion in model container [2024-11-20 09:34:27,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:27" (2/3) ... [2024-11-20 09:34:27,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c68349d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:27, skipping insertion in model container [2024-11-20 09:34:27,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:27" (3/3) ... [2024-11-20 09:34:27,989 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-11-20 09:34:28,005 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:34:28,005 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:34:28,005 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:34:28,078 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-20 09:34:28,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2024-11-20 09:34:28,168 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-20 09:34:28,169 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 09:34:28,175 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 35 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. [2024-11-20 09:34:28,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2024-11-20 09:34:28,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2024-11-20 09:34:28,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:34:28,194 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;@71054175, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:34:28,194 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-20 09:34:28,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:34:28,207 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-20 09:34:28,207 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 09:34:28,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:28,208 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:28,209 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)] === [2024-11-20 09:34:28,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1273891109, now seen corresponding path program 1 times [2024-11-20 09:34:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:28,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106557113] [2024-11-20 09:34:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:28,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:28,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106557113] [2024-11-20 09:34:28,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106557113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:28,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:28,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:34:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238539935] [2024-11-20 09:34:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:28,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:34:28,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:34:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:34:28,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:28,853 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) [2024-11-20 09:34:28,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:28,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:28,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:31,121 INFO L124 PetriNetUnfolderBase]: 22467/26032 cut-off events. [2024-11-20 09:34:31,123 INFO L125 PetriNetUnfolderBase]: For 1291/1291 co-relation queries the response was YES. [2024-11-20 09:34:31,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53577 conditions, 26032 events. 22467/26032 cut-off events. For 1291/1291 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 90072 event pairs, 3392 based on Foata normal form. 1/14205 useless extension candidates. Maximal degree in co-relation 44055. Up to 18721 conditions per place. [2024-11-20 09:34:31,356 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 53 selfloop transitions, 3 changer transitions 5/68 dead transitions. [2024-11-20 09:34:31,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-11-20 09:34:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:34:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:34:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-20 09:34:31,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2024-11-20 09:34:31,372 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2024-11-20 09:34:31,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-11-20 09:34:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-20 09:34:31,462 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 109 flow [2024-11-20 09:34:31,465 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=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-11-20 09:34:31,470 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2024-11-20 09:34:31,470 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 109 flow [2024-11-20 09:34:31,470 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) [2024-11-20 09:34:31,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:31,471 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] [2024-11-20 09:34:31,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:34:31,471 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)] === [2024-11-20 09:34:31,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1632091046, now seen corresponding path program 1 times [2024-11-20 09:34:31,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:31,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758114066] [2024-11-20 09:34:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:31,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:34:31,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:31,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758114066] [2024-11-20 09:34:31,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758114066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:31,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:31,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:34:31,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696451579] [2024-11-20 09:34:31,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:31,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:34:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:31,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:34:31,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:34:31,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:31,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:31,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:31,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:31,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:34,015 INFO L124 PetriNetUnfolderBase]: 28887/33823 cut-off events. [2024-11-20 09:34:34,016 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2024-11-20 09:34:34,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73953 conditions, 33823 events. 28887/33823 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 126061 event pairs, 5370 based on Foata normal form. 1/23088 useless extension candidates. Maximal degree in co-relation 30558. Up to 22060 conditions per place. [2024-11-20 09:34:34,329 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 53 selfloop transitions, 3 changer transitions 1/64 dead transitions. [2024-11-20 09:34:34,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 64 transitions, 286 flow [2024-11-20 09:34:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:34:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:34:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-20 09:34:34,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-20 09:34:34,331 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 109 flow. Second operand 3 states and 93 transitions. [2024-11-20 09:34:34,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 64 transitions, 286 flow [2024-11-20 09:34:34,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:34,335 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 125 flow [2024-11-20 09:34:34,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-20 09:34:34,336 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-20 09:34:34,336 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 125 flow [2024-11-20 09:34:34,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:34,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:34,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:34,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:34:34,338 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)] === [2024-11-20 09:34:34,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1847200297, now seen corresponding path program 1 times [2024-11-20 09:34:34,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514521398] [2024-11-20 09:34:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:34:34,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:34,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514521398] [2024-11-20 09:34:34,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514521398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:34,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:34,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:34:34,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935457174] [2024-11-20 09:34:34,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:34,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:34:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:34,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:34:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:34:34,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:34,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:34,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:34,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:34,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:36,455 INFO L124 PetriNetUnfolderBase]: 36445/42858 cut-off events. [2024-11-20 09:34:36,455 INFO L125 PetriNetUnfolderBase]: For 12374/12374 co-relation queries the response was YES. [2024-11-20 09:34:36,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100240 conditions, 42858 events. 36445/42858 cut-off events. For 12374/12374 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 168991 event pairs, 5856 based on Foata normal form. 1/35380 useless extension candidates. Maximal degree in co-relation 32750. Up to 31148 conditions per place. [2024-11-20 09:34:36,749 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 59 selfloop transitions, 3 changer transitions 3/72 dead transitions. [2024-11-20 09:34:36,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2024-11-20 09:34:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:34:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:34:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-20 09:34:36,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-11-20 09:34:36,751 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 125 flow. Second operand 3 states and 97 transitions. [2024-11-20 09:34:36,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2024-11-20 09:34:36,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:36,760 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 141 flow [2024-11-20 09:34:36,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-20 09:34:36,762 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-20 09:34:36,762 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 141 flow [2024-11-20 09:34:36,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:36,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:36,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:36,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:34:36,764 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)] === [2024-11-20 09:34:36,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1539604524, now seen corresponding path program 1 times [2024-11-20 09:34:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:36,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558768802] [2024-11-20 09:34:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:36,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:34:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558768802] [2024-11-20 09:34:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558768802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:36,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:36,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:36,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225207426] [2024-11-20 09:34:36,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:36,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:36,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:36,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:36,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:36,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:36,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:36,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:39,680 INFO L124 PetriNetUnfolderBase]: 41073/48677 cut-off events. [2024-11-20 09:34:39,680 INFO L125 PetriNetUnfolderBase]: For 18456/18456 co-relation queries the response was YES. [2024-11-20 09:34:39,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122495 conditions, 48677 events. 41073/48677 cut-off events. For 18456/18456 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 205151 event pairs, 6124 based on Foata normal form. 981/49144 useless extension candidates. Maximal degree in co-relation 40746. Up to 22914 conditions per place. [2024-11-20 09:34:40,024 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 106 selfloop transitions, 6 changer transitions 11/130 dead transitions. [2024-11-20 09:34:40,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 130 transitions, 643 flow [2024-11-20 09:34:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-20 09:34:40,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2024-11-20 09:34:40,027 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 141 flow. Second operand 5 states and 175 transitions. [2024-11-20 09:34:40,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 130 transitions, 643 flow [2024-11-20 09:34:40,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 130 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:40,036 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 175 flow [2024-11-20 09:34:40,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-20 09:34:40,037 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-20 09:34:40,038 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 175 flow [2024-11-20 09:34:40,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:40,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:40,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:40,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:34:40,039 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)] === [2024-11-20 09:34:40,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:40,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1576941873, now seen corresponding path program 1 times [2024-11-20 09:34:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:40,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927974657] [2024-11-20 09:34:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:40,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:34:40,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:40,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927974657] [2024-11-20 09:34:40,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927974657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:40,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:40,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:40,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322706690] [2024-11-20 09:34:40,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:40,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:40,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:40,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:40,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:40,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:40,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:40,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:40,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:40,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:42,852 INFO L124 PetriNetUnfolderBase]: 40803/48295 cut-off events. [2024-11-20 09:34:42,852 INFO L125 PetriNetUnfolderBase]: For 30028/30028 co-relation queries the response was YES. [2024-11-20 09:34:42,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132577 conditions, 48295 events. 40803/48295 cut-off events. For 30028/30028 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 202039 event pairs, 973 based on Foata normal form. 562/48727 useless extension candidates. Maximal degree in co-relation 51811. Up to 18355 conditions per place. [2024-11-20 09:34:43,054 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 84 selfloop transitions, 4 changer transitions 35/130 dead transitions. [2024-11-20 09:34:43,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 130 transitions, 679 flow [2024-11-20 09:34:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-20 09:34:43,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-11-20 09:34:43,057 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 175 flow. Second operand 5 states and 169 transitions. [2024-11-20 09:34:43,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 130 transitions, 679 flow [2024-11-20 09:34:43,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 673 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:43,289 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 183 flow [2024-11-20 09:34:43,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-20 09:34:43,290 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-20 09:34:43,291 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 183 flow [2024-11-20 09:34:43,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:43,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:43,291 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:43,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:34:43,292 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)] === [2024-11-20 09:34:43,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1386392631, now seen corresponding path program 2 times [2024-11-20 09:34:43,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677990780] [2024-11-20 09:34:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:43,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:34:43,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677990780] [2024-11-20 09:34:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677990780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:43,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417862567] [2024-11-20 09:34:43,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:43,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:43,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:43,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:43,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:43,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:43,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:43,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:45,335 INFO L124 PetriNetUnfolderBase]: 28369/33687 cut-off events. [2024-11-20 09:34:45,336 INFO L125 PetriNetUnfolderBase]: For 38197/38197 co-relation queries the response was YES. [2024-11-20 09:34:45,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100041 conditions, 33687 events. 28369/33687 cut-off events. For 38197/38197 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 135687 event pairs, 3839 based on Foata normal form. 721/33997 useless extension candidates. Maximal degree in co-relation 51731. Up to 16437 conditions per place. [2024-11-20 09:34:45,539 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 112 selfloop transitions, 6 changer transitions 7/132 dead transitions. [2024-11-20 09:34:45,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 132 transitions, 776 flow [2024-11-20 09:34:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-11-20 09:34:45,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2024-11-20 09:34:45,541 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 183 flow. Second operand 5 states and 165 transitions. [2024-11-20 09:34:45,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 132 transitions, 776 flow [2024-11-20 09:34:45,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 763 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:45,555 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 213 flow [2024-11-20 09:34:45,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-11-20 09:34:45,556 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-11-20 09:34:45,556 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 213 flow [2024-11-20 09:34:45,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:45,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:45,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:45,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:34:45,557 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)] === [2024-11-20 09:34:45,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1690910736, now seen corresponding path program 1 times [2024-11-20 09:34:45,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:45,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068602087] [2024-11-20 09:34:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:45,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:34:45,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068602087] [2024-11-20 09:34:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068602087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739626064] [2024-11-20 09:34:45,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:45,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:45,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:45,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:34:45,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:34:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:45,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 09:34:45,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:34:46,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:34:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739626064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:46,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:34:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-20 09:34:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625851980] [2024-11-20 09:34:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:46,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:46,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:34:46,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:46,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:46,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:46,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:46,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:47,987 INFO L124 PetriNetUnfolderBase]: 27581/32810 cut-off events. [2024-11-20 09:34:47,987 INFO L125 PetriNetUnfolderBase]: For 37124/37124 co-relation queries the response was YES. [2024-11-20 09:34:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107692 conditions, 32810 events. 27581/32810 cut-off events. For 37124/37124 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 134456 event pairs, 1277 based on Foata normal form. 972/33634 useless extension candidates. Maximal degree in co-relation 47549. Up to 24879 conditions per place. [2024-11-20 09:34:48,163 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 93 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-20 09:34:48,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 620 flow [2024-11-20 09:34:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:34:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:34:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-20 09:34:48,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-11-20 09:34:48,165 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 213 flow. Second operand 4 states and 126 transitions. [2024-11-20 09:34:48,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 620 flow [2024-11-20 09:34:48,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 607 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:48,302 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 226 flow [2024-11-20 09:34:48,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-11-20 09:34:48,302 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-20 09:34:48,303 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 226 flow [2024-11-20 09:34:48,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:48,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:48,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:48,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 09:34:48,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:48,504 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)] === [2024-11-20 09:34:48,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 723661435, now seen corresponding path program 1 times [2024-11-20 09:34:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:48,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694740306] [2024-11-20 09:34:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:48,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:34:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694740306] [2024-11-20 09:34:48,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694740306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:48,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:48,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:48,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139990103] [2024-11-20 09:34:48,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:48,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:48,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:48,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:48,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:48,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:48,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:48,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:48,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:50,572 INFO L124 PetriNetUnfolderBase]: 27237/32465 cut-off events. [2024-11-20 09:34:50,573 INFO L125 PetriNetUnfolderBase]: For 49547/49547 co-relation queries the response was YES. [2024-11-20 09:34:50,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111317 conditions, 32465 events. 27237/32465 cut-off events. For 49547/49547 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 130555 event pairs, 640 based on Foata normal form. 366/32708 useless extension candidates. Maximal degree in co-relation 76500. Up to 12761 conditions per place. [2024-11-20 09:34:50,765 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 92 selfloop transitions, 4 changer transitions 35/138 dead transitions. [2024-11-20 09:34:50,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 138 transitions, 886 flow [2024-11-20 09:34:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-20 09:34:50,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-20 09:34:50,768 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 226 flow. Second operand 5 states and 161 transitions. [2024-11-20 09:34:50,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 138 transitions, 886 flow [2024-11-20 09:34:50,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 138 transitions, 868 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:34:50,989 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 233 flow [2024-11-20 09:34:50,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-20 09:34:50,990 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-11-20 09:34:50,990 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 233 flow [2024-11-20 09:34:50,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:50,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:50,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:50,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:34:50,991 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)] === [2024-11-20 09:34:50,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:50,992 INFO L85 PathProgramCache]: Analyzing trace with hash 40113075, now seen corresponding path program 2 times [2024-11-20 09:34:50,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:50,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280009305] [2024-11-20 09:34:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:34:51,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:51,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280009305] [2024-11-20 09:34:51,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280009305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:51,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:51,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:51,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239734179] [2024-11-20 09:34:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:51,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:51,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:51,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:51,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:51,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:51,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:51,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:52,743 INFO L124 PetriNetUnfolderBase]: 19916/23877 cut-off events. [2024-11-20 09:34:52,743 INFO L125 PetriNetUnfolderBase]: For 50208/50208 co-relation queries the response was YES. [2024-11-20 09:34:52,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86031 conditions, 23877 events. 19916/23877 cut-off events. For 50208/50208 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 93369 event pairs, 3114 based on Foata normal form. 406/23843 useless extension candidates. Maximal degree in co-relation 59586. Up to 9135 conditions per place. [2024-11-20 09:34:52,879 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 122 selfloop transitions, 6 changer transitions 3/138 dead transitions. [2024-11-20 09:34:52,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 138 transitions, 961 flow [2024-11-20 09:34:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-20 09:34:52,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-20 09:34:52,881 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 233 flow. Second operand 5 states and 155 transitions. [2024-11-20 09:34:52,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 138 transitions, 961 flow [2024-11-20 09:34:52,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 948 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:52,895 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 263 flow [2024-11-20 09:34:52,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-20 09:34:52,896 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-20 09:34:52,897 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 263 flow [2024-11-20 09:34:52,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:52,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:52,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:52,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:34:52,897 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)] === [2024-11-20 09:34:52,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:52,898 INFO L85 PathProgramCache]: Analyzing trace with hash -87921704, now seen corresponding path program 1 times [2024-11-20 09:34:52,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:52,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624161798] [2024-11-20 09:34:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:52,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:34:53,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:53,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624161798] [2024-11-20 09:34:53,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624161798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:53,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747075647] [2024-11-20 09:34:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:53,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:53,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:53,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:34:53,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:34:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:53,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 09:34:53,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:34:53,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:34:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747075647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:53,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:34:53,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-20 09:34:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311909190] [2024-11-20 09:34:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:53,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:34:53,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:53,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:53,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:53,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:53,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:55,005 INFO L124 PetriNetUnfolderBase]: 19120/22901 cut-off events. [2024-11-20 09:34:55,005 INFO L125 PetriNetUnfolderBase]: For 45293/45293 co-relation queries the response was YES. [2024-11-20 09:34:55,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89587 conditions, 22901 events. 19120/22901 cut-off events. For 45293/45293 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 90712 event pairs, 677 based on Foata normal form. 796/23617 useless extension candidates. Maximal degree in co-relation 62527. Up to 16474 conditions per place. [2024-11-20 09:34:55,121 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 101 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2024-11-20 09:34:55,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 776 flow [2024-11-20 09:34:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:34:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:34:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-20 09:34:55,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-11-20 09:34:55,122 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 263 flow. Second operand 4 states and 122 transitions. [2024-11-20 09:34:55,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 776 flow [2024-11-20 09:34:55,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 112 transitions, 763 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:55,244 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 276 flow [2024-11-20 09:34:55,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-20 09:34:55,246 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-20 09:34:55,247 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 276 flow [2024-11-20 09:34:55,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:55,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:55,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:55,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:34:55,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 09:34:55,449 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)] === [2024-11-20 09:34:55,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1866218337, now seen corresponding path program 1 times [2024-11-20 09:34:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720466157] [2024-11-20 09:34:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 09:34:55,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720466157] [2024-11-20 09:34:55,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720466157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:55,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:55,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:55,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559405527] [2024-11-20 09:34:55,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:55,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:55,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:55,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:55,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:55,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:55,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:55,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:55,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:55,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:56,940 INFO L124 PetriNetUnfolderBase]: 18917/22797 cut-off events. [2024-11-20 09:34:56,940 INFO L125 PetriNetUnfolderBase]: For 58406/58406 co-relation queries the response was YES. [2024-11-20 09:34:57,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93087 conditions, 22797 events. 18917/22797 cut-off events. For 58406/58406 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 87703 event pairs, 941 based on Foata normal form. 203/22722 useless extension candidates. Maximal degree in co-relation 65339. Up to 9092 conditions per place. [2024-11-20 09:34:57,078 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 100 selfloop transitions, 4 changer transitions 35/146 dead transitions. [2024-11-20 09:34:57,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 1081 flow [2024-11-20 09:34:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-20 09:34:57,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-11-20 09:34:57,079 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 276 flow. Second operand 5 states and 153 transitions. [2024-11-20 09:34:57,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 1081 flow [2024-11-20 09:34:57,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 146 transitions, 1063 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:34:57,196 INFO L231 Difference]: Finished difference. Result has 76 places, 56 transitions, 283 flow [2024-11-20 09:34:57,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2024-11-20 09:34:57,197 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-20 09:34:57,197 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 283 flow [2024-11-20 09:34:57,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:57,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:57,198 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:57,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 09:34:57,198 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)] === [2024-11-20 09:34:57,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:57,198 INFO L85 PathProgramCache]: Analyzing trace with hash 586226707, now seen corresponding path program 2 times [2024-11-20 09:34:57,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:57,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651932511] [2024-11-20 09:34:57,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:57,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 09:34:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651932511] [2024-11-20 09:34:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651932511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:57,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:57,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442093751] [2024-11-20 09:34:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:57,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:57,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:57,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-20 09:34:57,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:57,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:57,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-20 09:34:57,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:58,497 INFO L124 PetriNetUnfolderBase]: 12943/15646 cut-off events. [2024-11-20 09:34:58,497 INFO L125 PetriNetUnfolderBase]: For 39573/39573 co-relation queries the response was YES. [2024-11-20 09:34:58,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65404 conditions, 15646 events. 12943/15646 cut-off events. For 39573/39573 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 57566 event pairs, 942 based on Foata normal form. 404/15898 useless extension candidates. Maximal degree in co-relation 45945. Up to 10371 conditions per place. [2024-11-20 09:34:58,630 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 6 changer transitions 0/137 dead transitions. [2024-11-20 09:34:58,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 137 transitions, 1026 flow [2024-11-20 09:34:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-20 09:34:58,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6347826086956522 [2024-11-20 09:34:58,632 INFO L175 Difference]: Start difference. First operand has 76 places, 56 transitions, 283 flow. Second operand 5 states and 146 transitions. [2024-11-20 09:34:58,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 137 transitions, 1026 flow [2024-11-20 09:34:58,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 137 transitions, 1019 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:58,713 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 317 flow [2024-11-20 09:34:58,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2024-11-20 09:34:58,715 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-20 09:34:58,715 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 317 flow [2024-11-20 09:34:58,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:58,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:58,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:58,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 09:34:58,716 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)] === [2024-11-20 09:34:58,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2022024224, now seen corresponding path program 1 times [2024-11-20 09:34:58,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:58,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231031562] [2024-11-20 09:34:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:58,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:34:59,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231031562] [2024-11-20 09:34:59,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231031562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:59,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425793923] [2024-11-20 09:34:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:59,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:59,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:59,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:34:59,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:34:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:59,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 09:34:59,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:38,022 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)