./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-counter-fun.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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:49:47,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:49:47,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:49:47,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:49:47,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:49:47,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:49:47,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:49:47,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:49:47,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:49:47,439 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:49:47,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:49:47,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:49:47,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:49:47,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:49:47,441 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:49:47,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:49:47,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:49:47,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:49:47,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:49:47,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:49:47,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:49:47,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:49:47,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:49:47,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:49:47,448 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:49:47,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:49:47,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:49:47,449 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:49:47,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:49:47,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:49:47,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:49:47,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:49:47,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:47,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:49:47,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:49:47,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:49:47,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:49:47,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:49:47,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:49:47,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:49:47,454 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:49:47,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:49:47,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-11-19 01:49:47,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:49:47,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:49:47,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:49:47,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:49:47,751 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:49:47,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-19 01:49:49,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:49:49,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:49:49,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-19 01:49:49,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35e2db0c/f9f821b9d7524bf68a3f0ad2f7691f5d/FLAG4f30c0af8 [2024-11-19 01:49:49,742 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35e2db0c/f9f821b9d7524bf68a3f0ad2f7691f5d [2024-11-19 01:49:49,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:49:49,745 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:49:49,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:49,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:49:49,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:49:49,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445bdcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49, skipping insertion in model container [2024-11-19 01:49:49,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:49:49,929 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2707,2720] [2024-11-19 01:49:49,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:49,956 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:49:50,019 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2707,2720] [2024-11-19 01:49:50,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:50,056 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:49:50,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50 WrapperNode [2024-11-19 01:49:50,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:50,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:50,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:49:50,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:49:50,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,111 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 191 [2024-11-19 01:49:50,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:50,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:49:50,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:49:50,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:49:50,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,128 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,155 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 01:49:50,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:49:50,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:49:50,171 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:49:50,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:49:50,172 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (1/1) ... [2024-11-19 01:49:50,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:50,210 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) [2024-11-19 01:49:50,214 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 [2024-11-19 01:49:50,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:49:50,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:49:50,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:49:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:49:50,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:49:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:49:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:49:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:49:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:49:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:49:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:49:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:49:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:49:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:49:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:49:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:49:50,262 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:49:50,369 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:49:50,371 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:49:50,750 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:49:50,751 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:49:51,012 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:49:51,014 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:49:51,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:51 BoogieIcfgContainer [2024-11-19 01:49:51,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:49:51,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:49:51,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:49:51,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:49:51,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:49:49" (1/3) ... [2024-11-19 01:49:51,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bfb431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:51, skipping insertion in model container [2024-11-19 01:49:51,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:50" (2/3) ... [2024-11-19 01:49:51,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bfb431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:51, skipping insertion in model container [2024-11-19 01:49:51,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:51" (3/3) ... [2024-11-19 01:49:51,024 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-11-19 01:49:51,040 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:49:51,040 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:49:51,040 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:49:51,087 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:49:51,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 66 flow [2024-11-19 01:49:51,154 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-19 01:49:51,154 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:49:51,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 4/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-19 01:49:51,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 26 transitions, 66 flow [2024-11-19 01:49:51,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 23 transitions, 58 flow [2024-11-19 01:49:51,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:49:51,180 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;@3963cee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:49:51,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:49:51,193 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:49:51,194 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-19 01:49:51,195 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:49:51,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:51,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:51,196 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:51,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:51,200 INFO L85 PathProgramCache]: Analyzing trace with hash -917773730, now seen corresponding path program 1 times [2024-11-19 01:49:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:51,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008115477] [2024-11-19 01:49:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:51,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:51,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008115477] [2024-11-19 01:49:51,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008115477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:51,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:51,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:49:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867845439] [2024-11-19 01:49:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:51,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:49:51,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:49:51,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:49:51,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-19 01:49:51,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-11-19 01:49:51,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:51,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-19 01:49:51,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:51,680 INFO L124 PetriNetUnfolderBase]: 94/185 cut-off events. [2024-11-19 01:49:51,681 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-19 01:49:51,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 185 events. 94/185 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 598 event pairs, 22 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 317. Up to 113 conditions per place. [2024-11-19 01:49:51,687 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 27 selfloop transitions, 3 changer transitions 1/34 dead transitions. [2024-11-19 01:49:51,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 151 flow [2024-11-19 01:49:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:49:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:49:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-11-19 01:49:51,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-11-19 01:49:51,702 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 58 flow. Second operand 3 states and 47 transitions. [2024-11-19 01:49:51,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 151 flow [2024-11-19 01:49:51,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 34 transitions, 137 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:49:51,708 INFO L231 Difference]: Finished difference. Result has 25 places, 25 transitions, 69 flow [2024-11-19 01:49:51,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=25, PETRI_TRANSITIONS=25} [2024-11-19 01:49:51,716 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2024-11-19 01:49:51,717 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 25 transitions, 69 flow [2024-11-19 01:49:51,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-11-19 01:49:51,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:51,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:51,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:49:51,722 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:51,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:51,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1358368092, now seen corresponding path program 1 times [2024-11-19 01:49:51,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:51,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061634682] [2024-11-19 01:49:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:51,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:51,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:51,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061634682] [2024-11-19 01:49:51,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061634682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:51,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:51,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174397596] [2024-11-19 01:49:51,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:51,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:51,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:51,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-19 01:49:51,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-19 01:49:51,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:51,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-19 01:49:51,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:52,063 INFO L124 PetriNetUnfolderBase]: 188/338 cut-off events. [2024-11-19 01:49:52,064 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-19 01:49:52,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 338 events. 188/338 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1342 event pairs, 62 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 197. Up to 187 conditions per place. [2024-11-19 01:49:52,068 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 39 selfloop transitions, 9 changer transitions 1/51 dead transitions. [2024-11-19 01:49:52,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 51 transitions, 240 flow [2024-11-19 01:49:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-11-19 01:49:52,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:49:52,072 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 69 flow. Second operand 5 states and 65 transitions. [2024-11-19 01:49:52,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 51 transitions, 240 flow [2024-11-19 01:49:52,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 51 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:52,075 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 124 flow [2024-11-19 01:49:52,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2024-11-19 01:49:52,076 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-11-19 01:49:52,077 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 124 flow [2024-11-19 01:49:52,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-19 01:49:52,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:52,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:52,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:49:52,078 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:52,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1429312728, now seen corresponding path program 2 times [2024-11-19 01:49:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:52,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138304598] [2024-11-19 01:49:52,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:52,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:52,116 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:52,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138304598] [2024-11-19 01:49:52,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138304598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:52,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:52,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:49:52,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660807253] [2024-11-19 01:49:52,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:52,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:49:52,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:52,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:49:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:49:52,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-19 01:49:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2024-11-19 01:49:52,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:52,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-19 01:49:52,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:52,468 INFO L124 PetriNetUnfolderBase]: 230/424 cut-off events. [2024-11-19 01:49:52,468 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-19 01:49:52,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 424 events. 230/424 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1838 event pairs, 30 based on Foata normal form. 13/435 useless extension candidates. Maximal degree in co-relation 567. Up to 122 conditions per place. [2024-11-19 01:49:52,471 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 62 selfloop transitions, 12 changer transitions 1/77 dead transitions. [2024-11-19 01:49:52,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 77 transitions, 437 flow [2024-11-19 01:49:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:49:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:49:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-11-19 01:49:52,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-11-19 01:49:52,473 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 124 flow. Second operand 7 states and 92 transitions. [2024-11-19 01:49:52,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 77 transitions, 437 flow [2024-11-19 01:49:52,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 77 transitions, 437 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:49:52,475 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 212 flow [2024-11-19 01:49:52,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-19 01:49:52,476 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-19 01:49:52,476 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 212 flow [2024-11-19 01:49:52,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2024-11-19 01:49:52,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:52,477 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:52,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:49:52,477 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:52,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash 469608532, now seen corresponding path program 3 times [2024-11-19 01:49:52,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:52,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308449090] [2024-11-19 01:49:52,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:52,492 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:49:52,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:52,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308449090] [2024-11-19 01:49:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308449090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:52,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:52,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710865641] [2024-11-19 01:49:52,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:52,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:52,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-19 01:49:52,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-19 01:49:52,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:52,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-19 01:49:52,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:52,669 INFO L124 PetriNetUnfolderBase]: 292/535 cut-off events. [2024-11-19 01:49:52,670 INFO L125 PetriNetUnfolderBase]: For 857/857 co-relation queries the response was YES. [2024-11-19 01:49:52,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 535 events. 292/535 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2346 event pairs, 92 based on Foata normal form. 2/529 useless extension candidates. Maximal degree in co-relation 1351. Up to 262 conditions per place. [2024-11-19 01:49:52,675 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 52 selfloop transitions, 10 changer transitions 4/68 dead transitions. [2024-11-19 01:49:52,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 497 flow [2024-11-19 01:49:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-19 01:49:52,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-19 01:49:52,677 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 212 flow. Second operand 5 states and 63 transitions. [2024-11-19 01:49:52,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 497 flow [2024-11-19 01:49:52,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 485 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:52,686 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 259 flow [2024-11-19 01:49:52,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-11-19 01:49:52,687 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-11-19 01:49:52,688 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 259 flow [2024-11-19 01:49:52,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-19 01:49:52,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:52,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:52,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:49:52,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:52,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1005547373, now seen corresponding path program 1 times [2024-11-19 01:49:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:52,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555037367] [2024-11-19 01:49:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:52,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:52,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:52,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555037367] [2024-11-19 01:49:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555037367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:52,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288968542] [2024-11-19 01:49:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:52,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:52,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:52,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:52,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-19 01:49:52,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-19 01:49:52,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:52,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-19 01:49:52,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:53,008 INFO L124 PetriNetUnfolderBase]: 305/553 cut-off events. [2024-11-19 01:49:53,008 INFO L125 PetriNetUnfolderBase]: For 1229/1233 co-relation queries the response was YES. [2024-11-19 01:49:53,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 553 events. 305/553 cut-off events. For 1229/1233 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2519 event pairs, 107 based on Foata normal form. 3/549 useless extension candidates. Maximal degree in co-relation 1783. Up to 290 conditions per place. [2024-11-19 01:49:53,012 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 52 selfloop transitions, 7 changer transitions 7/69 dead transitions. [2024-11-19 01:49:53,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 533 flow [2024-11-19 01:49:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:53,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-11-19 01:49:53,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2024-11-19 01:49:53,014 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 259 flow. Second operand 5 states and 67 transitions. [2024-11-19 01:49:53,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 533 flow [2024-11-19 01:49:53,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 494 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-19 01:49:53,021 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 261 flow [2024-11-19 01:49:53,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-11-19 01:49:53,022 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2024-11-19 01:49:53,023 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 261 flow [2024-11-19 01:49:53,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-19 01:49:53,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:53,024 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:53,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:49:53,025 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:53,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash -710500163, now seen corresponding path program 2 times [2024-11-19 01:49:53,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618070129] [2024-11-19 01:49:53,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:53,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:53,049 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:53,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618070129] [2024-11-19 01:49:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618070129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81324348] [2024-11-19 01:49:53,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:53,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:53,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:53,143 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) [2024-11-19 01:49:53,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:49:53,262 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:53,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:53,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:49:53,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:53,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81324348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:53,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:53,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-19 01:49:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805811700] [2024-11-19 01:49:53,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:53,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:49:53,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:49:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:49:53,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:49:53,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 261 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 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) [2024-11-19 01:49:53,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:53,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:49:53,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:53,654 INFO L124 PetriNetUnfolderBase]: 428/738 cut-off events. [2024-11-19 01:49:53,654 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2024-11-19 01:49:53,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 738 events. 428/738 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3120 event pairs, 22 based on Foata normal form. 12/748 useless extension candidates. Maximal degree in co-relation 2151. Up to 147 conditions per place. [2024-11-19 01:49:53,660 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 75 selfloop transitions, 52 changer transitions 2/130 dead transitions. [2024-11-19 01:49:53,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 1038 flow [2024-11-19 01:49:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:49:53,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:49:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 135 transitions. [2024-11-19 01:49:53,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3708791208791209 [2024-11-19 01:49:53,663 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 261 flow. Second operand 14 states and 135 transitions. [2024-11-19 01:49:53,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 1038 flow [2024-11-19 01:49:53,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 130 transitions, 981 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-19 01:49:53,671 INFO L231 Difference]: Finished difference. Result has 65 places, 79 transitions, 678 flow [2024-11-19 01:49:53,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=678, PETRI_PLACES=65, PETRI_TRANSITIONS=79} [2024-11-19 01:49:53,672 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-11-19 01:49:53,673 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 79 transitions, 678 flow [2024-11-19 01:49:53,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 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) [2024-11-19 01:49:53,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:53,673 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:53,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:49:53,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 01:49:53,879 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:53,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1226407250, now seen corresponding path program 4 times [2024-11-19 01:49:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:53,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501717378] [2024-11-19 01:49:53,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:49:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:53,895 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:49:53,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:53,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:53,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501717378] [2024-11-19 01:49:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501717378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:53,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:53,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:53,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337633526] [2024-11-19 01:49:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:53,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:53,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:49:53,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 79 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-19 01:49:53,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:53,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:49:53,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:54,153 INFO L124 PetriNetUnfolderBase]: 469/803 cut-off events. [2024-11-19 01:49:54,154 INFO L125 PetriNetUnfolderBase]: For 2566/2566 co-relation queries the response was YES. [2024-11-19 01:49:54,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 803 events. 469/803 cut-off events. For 2566/2566 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3481 event pairs, 42 based on Foata normal form. 13/814 useless extension candidates. Maximal degree in co-relation 2961. Up to 230 conditions per place. [2024-11-19 01:49:54,161 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 88 selfloop transitions, 41 changer transitions 0/130 dead transitions. [2024-11-19 01:49:54,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 130 transitions, 1255 flow [2024-11-19 01:49:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:49:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:49:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-11-19 01:49:54,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-11-19 01:49:54,162 INFO L175 Difference]: Start difference. First operand has 65 places, 79 transitions, 678 flow. Second operand 7 states and 76 transitions. [2024-11-19 01:49:54,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 130 transitions, 1255 flow [2024-11-19 01:49:54,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 130 transitions, 1174 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-19 01:49:54,172 INFO L231 Difference]: Finished difference. Result has 72 places, 98 transitions, 903 flow [2024-11-19 01:49:54,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=903, PETRI_PLACES=72, PETRI_TRANSITIONS=98} [2024-11-19 01:49:54,173 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-19 01:49:54,173 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 98 transitions, 903 flow [2024-11-19 01:49:54,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-19 01:49:54,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:54,174 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:54,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:49:54,174 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:54,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash -641270421, now seen corresponding path program 3 times [2024-11-19 01:49:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:54,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198361731] [2024-11-19 01:49:54,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:54,188 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:49:54,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:54,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:54,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198361731] [2024-11-19 01:49:54,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198361731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:54,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:54,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:49:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275480700] [2024-11-19 01:49:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:54,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:49:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:49:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:49:54,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:49:54,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 98 transitions, 903 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2024-11-19 01:49:54,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:54,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:49:54,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:54,414 INFO L124 PetriNetUnfolderBase]: 477/819 cut-off events. [2024-11-19 01:49:54,414 INFO L125 PetriNetUnfolderBase]: For 3232/3232 co-relation queries the response was YES. [2024-11-19 01:49:54,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 819 events. 477/819 cut-off events. For 3232/3232 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3589 event pairs, 119 based on Foata normal form. 12/829 useless extension candidates. Maximal degree in co-relation 3374. Up to 511 conditions per place. [2024-11-19 01:49:54,422 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 98 selfloop transitions, 36 changer transitions 0/135 dead transitions. [2024-11-19 01:49:54,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 135 transitions, 1399 flow [2024-11-19 01:49:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:49:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:49:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-19 01:49:54,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-11-19 01:49:54,423 INFO L175 Difference]: Start difference. First operand has 72 places, 98 transitions, 903 flow. Second operand 6 states and 74 transitions. [2024-11-19 01:49:54,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 135 transitions, 1399 flow [2024-11-19 01:49:54,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 135 transitions, 1351 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:54,433 INFO L231 Difference]: Finished difference. Result has 78 places, 101 transitions, 984 flow [2024-11-19 01:49:54,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=984, PETRI_PLACES=78, PETRI_TRANSITIONS=101} [2024-11-19 01:49:54,434 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2024-11-19 01:49:54,434 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 101 transitions, 984 flow [2024-11-19 01:49:54,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2024-11-19 01:49:54,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:54,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:54,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:49:54,434 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:54,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:54,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1589498937, now seen corresponding path program 4 times [2024-11-19 01:49:54,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:54,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761160270] [2024-11-19 01:49:54,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:49:54,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:54,443 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:49:54,443 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:54,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:54,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761160270] [2024-11-19 01:49:54,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761160270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:54,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:54,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:54,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807482853] [2024-11-19 01:49:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:54,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:54,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:54,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:54,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:49:54,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 101 transitions, 984 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-19 01:49:54,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:54,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:49:54,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:54,636 INFO L124 PetriNetUnfolderBase]: 501/858 cut-off events. [2024-11-19 01:49:54,637 INFO L125 PetriNetUnfolderBase]: For 3473/3473 co-relation queries the response was YES. [2024-11-19 01:49:54,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 858 events. 501/858 cut-off events. For 3473/3473 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3766 event pairs, 120 based on Foata normal form. 3/859 useless extension candidates. Maximal degree in co-relation 3561. Up to 518 conditions per place. [2024-11-19 01:49:54,643 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 102 selfloop transitions, 25 changer transitions 4/132 dead transitions. [2024-11-19 01:49:54,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 1450 flow [2024-11-19 01:49:54,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-19 01:49:54,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-11-19 01:49:54,645 INFO L175 Difference]: Start difference. First operand has 78 places, 101 transitions, 984 flow. Second operand 5 states and 62 transitions. [2024-11-19 01:49:54,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 1450 flow [2024-11-19 01:49:54,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 132 transitions, 1394 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 01:49:54,654 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 1006 flow [2024-11-19 01:49:54,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1006, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2024-11-19 01:49:54,655 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2024-11-19 01:49:54,655 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 1006 flow [2024-11-19 01:49:54,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-19 01:49:54,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:54,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:54,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:49:54,656 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:54,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2077923714, now seen corresponding path program 5 times [2024-11-19 01:49:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:54,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175554113] [2024-11-19 01:49:54,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:49:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:54,668 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:54,668 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:54,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175554113] [2024-11-19 01:49:54,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175554113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:54,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:54,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:54,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057381715] [2024-11-19 01:49:54,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:54,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:54,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:54,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:54,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-19 01:49:54,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 1006 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-19 01:49:54,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:54,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-19 01:49:54,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:54,835 INFO L124 PetriNetUnfolderBase]: 420/766 cut-off events. [2024-11-19 01:49:54,835 INFO L125 PetriNetUnfolderBase]: For 3696/3711 co-relation queries the response was YES. [2024-11-19 01:49:54,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3589 conditions, 766 events. 420/766 cut-off events. For 3696/3711 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3581 event pairs, 96 based on Foata normal form. 4/763 useless extension candidates. Maximal degree in co-relation 3192. Up to 384 conditions per place. [2024-11-19 01:49:54,842 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 88 selfloop transitions, 28 changer transitions 1/129 dead transitions. [2024-11-19 01:49:54,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 1429 flow [2024-11-19 01:49:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-19 01:49:54,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-11-19 01:49:54,843 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 1006 flow. Second operand 5 states and 64 transitions. [2024-11-19 01:49:54,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 1429 flow [2024-11-19 01:49:54,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 129 transitions, 1398 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 01:49:54,853 INFO L231 Difference]: Finished difference. Result has 84 places, 109 transitions, 1138 flow [2024-11-19 01:49:54,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1138, PETRI_PLACES=84, PETRI_TRANSITIONS=109} [2024-11-19 01:49:54,853 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 58 predicate places. [2024-11-19 01:49:54,854 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 109 transitions, 1138 flow [2024-11-19 01:49:54,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-19 01:49:54,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:54,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:54,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:49:54,854 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:54,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash -111148459, now seen corresponding path program 5 times [2024-11-19 01:49:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107325982] [2024-11-19 01:49:54,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:49:54,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:54,864 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:54,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:54,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107325982] [2024-11-19 01:49:54,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107325982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:54,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:54,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96165436] [2024-11-19 01:49:54,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:54,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:54,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:54,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:54,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:49:54,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 109 transitions, 1138 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-19 01:49:54,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:54,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:49:54,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:55,114 INFO L124 PetriNetUnfolderBase]: 491/853 cut-off events. [2024-11-19 01:49:55,114 INFO L125 PetriNetUnfolderBase]: For 4146/4146 co-relation queries the response was YES. [2024-11-19 01:49:55,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 853 events. 491/853 cut-off events. For 4146/4146 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3813 event pairs, 41 based on Foata normal form. 12/863 useless extension candidates. Maximal degree in co-relation 3606. Up to 263 conditions per place. [2024-11-19 01:49:55,119 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 83 selfloop transitions, 58 changer transitions 2/144 dead transitions. [2024-11-19 01:49:55,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 1631 flow [2024-11-19 01:49:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:49:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:49:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-19 01:49:55,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-11-19 01:49:55,120 INFO L175 Difference]: Start difference. First operand has 84 places, 109 transitions, 1138 flow. Second operand 7 states and 77 transitions. [2024-11-19 01:49:55,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 1631 flow [2024-11-19 01:49:55,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 144 transitions, 1595 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:55,131 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 1281 flow [2024-11-19 01:49:55,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1281, PETRI_PLACES=91, PETRI_TRANSITIONS=114} [2024-11-19 01:49:55,132 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 65 predicate places. [2024-11-19 01:49:55,132 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 1281 flow [2024-11-19 01:49:55,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-19 01:49:55,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:55,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:55,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:49:55,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:55,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:55,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1904676022, now seen corresponding path program 6 times [2024-11-19 01:49:55,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:55,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894835706] [2024-11-19 01:49:55,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:49:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:55,146 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:49:55,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:55,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:55,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894835706] [2024-11-19 01:49:55,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894835706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:55,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:55,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087624931] [2024-11-19 01:49:55,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:55,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:55,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:49:55,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 114 transitions, 1281 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-19 01:49:55,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:55,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:49:55,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:55,406 INFO L124 PetriNetUnfolderBase]: 481/832 cut-off events. [2024-11-19 01:49:55,406 INFO L125 PetriNetUnfolderBase]: For 4360/4360 co-relation queries the response was YES. [2024-11-19 01:49:55,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4125 conditions, 832 events. 481/832 cut-off events. For 4360/4360 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3688 event pairs, 123 based on Foata normal form. 4/834 useless extension candidates. Maximal degree in co-relation 3966. Up to 472 conditions per place. [2024-11-19 01:49:55,420 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 95 selfloop transitions, 33 changer transitions 0/129 dead transitions. [2024-11-19 01:49:55,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 1606 flow [2024-11-19 01:49:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-19 01:49:55,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-11-19 01:49:55,422 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 1281 flow. Second operand 5 states and 62 transitions. [2024-11-19 01:49:55,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 1606 flow [2024-11-19 01:49:55,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 1580 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-19 01:49:55,433 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 1341 flow [2024-11-19 01:49:55,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1341, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-11-19 01:49:55,435 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-11-19 01:49:55,435 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 1341 flow [2024-11-19 01:49:55,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-19 01:49:55,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:55,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:55,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:49:55,436 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:55,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:55,436 INFO L85 PathProgramCache]: Analyzing trace with hash 69521072, now seen corresponding path program 7 times [2024-11-19 01:49:55,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:55,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070783894] [2024-11-19 01:49:55,437 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:49:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070783894] [2024-11-19 01:49:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070783894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664017522] [2024-11-19 01:49:55,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:49:55,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:55,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:55,505 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) [2024-11-19 01:49:55,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:49:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:55,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:49:55,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:55,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:49:55,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664017522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:55,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:49:55,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 01:49:55,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127878661] [2024-11-19 01:49:55,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:55,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:49:55,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:49:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:49:55,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-19 01:49:55,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 1341 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-19 01:49:55,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:55,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-19 01:49:55,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:55,766 INFO L124 PetriNetUnfolderBase]: 392/781 cut-off events. [2024-11-19 01:49:55,767 INFO L125 PetriNetUnfolderBase]: For 5487/5505 co-relation queries the response was YES. [2024-11-19 01:49:55,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4023 conditions, 781 events. 392/781 cut-off events. For 5487/5505 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4001 event pairs, 168 based on Foata normal form. 28/802 useless extension candidates. Maximal degree in co-relation 3753. Up to 575 conditions per place. [2024-11-19 01:49:55,773 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 81 selfloop transitions, 2 changer transitions 19/136 dead transitions. [2024-11-19 01:49:55,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 1746 flow [2024-11-19 01:49:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-19 01:49:55,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-19 01:49:55,774 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 1341 flow. Second operand 5 states and 63 transitions. [2024-11-19 01:49:55,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 136 transitions, 1746 flow [2024-11-19 01:49:55,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 136 transitions, 1718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:55,785 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1337 flow [2024-11-19 01:49:55,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1337, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2024-11-19 01:49:55,786 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 72 predicate places. [2024-11-19 01:49:55,786 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1337 flow [2024-11-19 01:49:55,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-19 01:49:55,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:55,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:55,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:49:55,991 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,SelfDestructingSolverStorable12 [2024-11-19 01:49:55,992 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:55,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:55,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1652307094, now seen corresponding path program 1 times [2024-11-19 01:49:55,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:55,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729586381] [2024-11-19 01:49:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:55,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729586381] [2024-11-19 01:49:56,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729586381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608275167] [2024-11-19 01:49:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:56,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:56,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:56,064 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) [2024-11-19 01:49:56,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:49:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:56,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:49:56,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:56,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608275167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:56,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:56,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-19 01:49:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909800445] [2024-11-19 01:49:56,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:56,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:49:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:49:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:49:56,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:49:56,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 1337 flow. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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) [2024-11-19 01:49:56,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:56,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:49:56,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:56,390 INFO L124 PetriNetUnfolderBase]: 470/810 cut-off events. [2024-11-19 01:49:56,391 INFO L125 PetriNetUnfolderBase]: For 4533/4533 co-relation queries the response was YES. [2024-11-19 01:49:56,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4039 conditions, 810 events. 470/810 cut-off events. For 4533/4533 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3510 event pairs, 63 based on Foata normal form. 9/817 useless extension candidates. Maximal degree in co-relation 3999. Up to 287 conditions per place. [2024-11-19 01:49:56,397 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 106 selfloop transitions, 43 changer transitions 1/151 dead transitions. [2024-11-19 01:49:56,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 151 transitions, 1835 flow [2024-11-19 01:49:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:49:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:49:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-11-19 01:49:56,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44711538461538464 [2024-11-19 01:49:56,399 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1337 flow. Second operand 8 states and 93 transitions. [2024-11-19 01:49:56,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 151 transitions, 1835 flow [2024-11-19 01:49:56,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 151 transitions, 1813 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-19 01:49:56,410 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 1371 flow [2024-11-19 01:49:56,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1371, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2024-11-19 01:49:56,411 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 73 predicate places. [2024-11-19 01:49:56,411 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 1371 flow [2024-11-19 01:49:56,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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) [2024-11-19 01:49:56,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:56,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:56,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:49:56,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:56,613 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:56,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash 479703717, now seen corresponding path program 1 times [2024-11-19 01:49:56,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:56,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232292416] [2024-11-19 01:49:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:56,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:56,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232292416] [2024-11-19 01:49:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232292416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:56,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:56,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:56,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031935902] [2024-11-19 01:49:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:56,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:56,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:56,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-19 01:49:56,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 1371 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-19 01:49:56,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:56,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-19 01:49:56,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:56,801 INFO L124 PetriNetUnfolderBase]: 407/715 cut-off events. [2024-11-19 01:49:56,802 INFO L125 PetriNetUnfolderBase]: For 5062/5068 co-relation queries the response was YES. [2024-11-19 01:49:56,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3746 conditions, 715 events. 407/715 cut-off events. For 5062/5068 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3141 event pairs, 105 based on Foata normal form. 3/713 useless extension candidates. Maximal degree in co-relation 3704. Up to 362 conditions per place. [2024-11-19 01:49:56,808 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 77 selfloop transitions, 26 changer transitions 3/127 dead transitions. [2024-11-19 01:49:56,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 127 transitions, 1631 flow [2024-11-19 01:49:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-19 01:49:56,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-11-19 01:49:56,810 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 1371 flow. Second operand 5 states and 60 transitions. [2024-11-19 01:49:56,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 127 transitions, 1631 flow [2024-11-19 01:49:56,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 1493 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-19 01:49:56,821 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 1267 flow [2024-11-19 01:49:56,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1267, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2024-11-19 01:49:56,821 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 68 predicate places. [2024-11-19 01:49:56,822 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 1267 flow [2024-11-19 01:49:56,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-19 01:49:56,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:56,822 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] [2024-11-19 01:49:56,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:49:56,822 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:56,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash -113268525, now seen corresponding path program 1 times [2024-11-19 01:49:56,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:56,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022254809] [2024-11-19 01:49:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:56,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:49:56,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:56,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022254809] [2024-11-19 01:49:56,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022254809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:56,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:56,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:49:56,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463118756] [2024-11-19 01:49:56,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:56,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:49:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:56,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:49:56,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:49:56,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-19 01:49:56,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 1267 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-19 01:49:56,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:56,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-19 01:49:56,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:56,979 INFO L124 PetriNetUnfolderBase]: 360/697 cut-off events. [2024-11-19 01:49:56,979 INFO L125 PetriNetUnfolderBase]: For 4966/4984 co-relation queries the response was YES. [2024-11-19 01:49:56,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 697 events. 360/697 cut-off events. For 4966/4984 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3344 event pairs, 145 based on Foata normal form. 25/718 useless extension candidates. Maximal degree in co-relation 3476. Up to 516 conditions per place. [2024-11-19 01:49:56,984 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 77 selfloop transitions, 2 changer transitions 11/125 dead transitions. [2024-11-19 01:49:56,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 125 transitions, 1592 flow [2024-11-19 01:49:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:49:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:49:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2024-11-19 01:49:56,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-11-19 01:49:56,985 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 1267 flow. Second operand 4 states and 50 transitions. [2024-11-19 01:49:56,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 125 transitions, 1592 flow [2024-11-19 01:49:56,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 1488 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-19 01:49:56,994 INFO L231 Difference]: Finished difference. Result has 92 places, 114 transitions, 1192 flow [2024-11-19 01:49:56,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1192, PETRI_PLACES=92, PETRI_TRANSITIONS=114} [2024-11-19 01:49:56,995 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-11-19 01:49:56,995 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 114 transitions, 1192 flow [2024-11-19 01:49:56,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-19 01:49:56,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:56,995 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] [2024-11-19 01:49:56,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:49:56,995 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:56,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:56,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1613481059, now seen corresponding path program 1 times [2024-11-19 01:49:56,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:56,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372974736] [2024-11-19 01:49:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:56,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:57,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:57,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372974736] [2024-11-19 01:49:57,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372974736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:57,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570179381] [2024-11-19 01:49:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:57,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:57,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:57,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:49:57,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:49:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:57,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:49:57,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:49:57,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:57,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2024-11-19 01:49:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:49:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570179381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:57,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:57,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-19 01:49:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063085532] [2024-11-19 01:49:57,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:57,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:49:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:57,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:49:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:49:57,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-19 01:49:57,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 transitions, 1192 flow. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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) [2024-11-19 01:49:57,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:57,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-19 01:49:57,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:57,642 INFO L124 PetriNetUnfolderBase]: 1021/1875 cut-off events. [2024-11-19 01:49:57,642 INFO L125 PetriNetUnfolderBase]: For 9772/9870 co-relation queries the response was YES. [2024-11-19 01:49:57,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 1875 events. 1021/1875 cut-off events. For 9772/9870 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10774 event pairs, 133 based on Foata normal form. 44/1916 useless extension candidates. Maximal degree in co-relation 7009. Up to 476 conditions per place. [2024-11-19 01:49:57,659 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 253 selfloop transitions, 14 changer transitions 11/313 dead transitions. [2024-11-19 01:49:57,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 313 transitions, 3800 flow [2024-11-19 01:49:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:49:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:49:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-11-19 01:49:57,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5341880341880342 [2024-11-19 01:49:57,660 INFO L175 Difference]: Start difference. First operand has 92 places, 114 transitions, 1192 flow. Second operand 9 states and 125 transitions. [2024-11-19 01:49:57,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 313 transitions, 3800 flow [2024-11-19 01:49:57,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 313 transitions, 3784 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 01:49:57,680 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1301 flow [2024-11-19 01:49:57,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1301, PETRI_PLACES=101, PETRI_TRANSITIONS=127} [2024-11-19 01:49:57,680 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2024-11-19 01:49:57,680 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1301 flow [2024-11-19 01:49:57,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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) [2024-11-19 01:49:57,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:57,680 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] [2024-11-19 01:49:57,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:49:57,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 01:49:57,881 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:57,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash -46567511, now seen corresponding path program 2 times [2024-11-19 01:49:57,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:57,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588470439] [2024-11-19 01:49:57,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:57,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:57,899 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:57,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:58,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:58,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588470439] [2024-11-19 01:49:58,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588470439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144485971] [2024-11-19 01:49:58,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:58,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:58,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:58,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:49:58,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:49:58,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:58,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:58,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:49:58,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:58,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:58,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2024-11-19 01:49:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:58,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144485971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:58,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:58,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-19 01:49:58,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451794621] [2024-11-19 01:49:58,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:58,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:49:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:49:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:49:58,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-19 01:49:58,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 1301 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-11-19 01:49:58,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:58,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-19 01:49:58,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:58,717 INFO L124 PetriNetUnfolderBase]: 2496/4592 cut-off events. [2024-11-19 01:49:58,717 INFO L125 PetriNetUnfolderBase]: For 24830/25112 co-relation queries the response was YES. [2024-11-19 01:49:58,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22199 conditions, 4592 events. 2496/4592 cut-off events. For 24830/25112 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 31374 event pairs, 337 based on Foata normal form. 163/4751 useless extension candidates. Maximal degree in co-relation 18538. Up to 1427 conditions per place. [2024-11-19 01:49:58,744 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 254 selfloop transitions, 23 changer transitions 21/333 dead transitions. [2024-11-19 01:49:58,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 333 transitions, 4017 flow [2024-11-19 01:49:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:49:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:49:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-11-19 01:49:58,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-19 01:49:58,746 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1301 flow. Second operand 8 states and 114 transitions. [2024-11-19 01:49:58,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 333 transitions, 4017 flow [2024-11-19 01:49:58,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 333 transitions, 3969 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:58,790 INFO L231 Difference]: Finished difference. Result has 112 places, 145 transitions, 1489 flow [2024-11-19 01:49:58,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1489, PETRI_PLACES=112, PETRI_TRANSITIONS=145} [2024-11-19 01:49:58,792 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 86 predicate places. [2024-11-19 01:49:58,792 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 145 transitions, 1489 flow [2024-11-19 01:49:58,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-11-19 01:49:58,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:58,792 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:58,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:49:58,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 01:49:58,993 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:58,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1039400364, now seen corresponding path program 3 times [2024-11-19 01:49:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:58,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443843825] [2024-11-19 01:49:58,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:59,020 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:49:59,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:49:59,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:59,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443843825] [2024-11-19 01:49:59,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443843825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:59,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019744272] [2024-11-19 01:49:59,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:59,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:59,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:49:59,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:49:59,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:49:59,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:59,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 01:49:59,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:59,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 01:49:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:49:59,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:59,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:49:59,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 209 [2024-11-19 01:50:00,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:50:00,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 75 [2024-11-19 01:50:00,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:50:00,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 284 treesize of output 290 [2024-11-19 01:50:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:50:03,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019744272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:03,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:03,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-19 01:50:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766834851] [2024-11-19 01:50:03,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:03,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:50:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:50:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:50:03,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-19 01:50:03,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 145 transitions, 1489 flow. Second operand has 16 states, 16 states have (on average 8.5) internal successors, (136), 16 states have internal predecessors, (136), 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) [2024-11-19 01:50:03,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:03,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-19 01:50:03,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:03,899 INFO L124 PetriNetUnfolderBase]: 2191/4074 cut-off events. [2024-11-19 01:50:03,900 INFO L125 PetriNetUnfolderBase]: For 22580/22784 co-relation queries the response was YES. [2024-11-19 01:50:03,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20129 conditions, 4074 events. 2191/4074 cut-off events. For 22580/22784 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 27255 event pairs, 193 based on Foata normal form. 165/4236 useless extension candidates. Maximal degree in co-relation 16958. Up to 2470 conditions per place. [2024-11-19 01:50:03,923 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 111 selfloop transitions, 11 changer transitions 61/218 dead transitions. [2024-11-19 01:50:03,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 218 transitions, 2647 flow [2024-11-19 01:50:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-19 01:50:03,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-11-19 01:50:03,924 INFO L175 Difference]: Start difference. First operand has 112 places, 145 transitions, 1489 flow. Second operand 7 states and 86 transitions. [2024-11-19 01:50:03,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 218 transitions, 2647 flow [2024-11-19 01:50:03,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 218 transitions, 2632 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:03,960 INFO L231 Difference]: Finished difference. Result has 118 places, 142 transitions, 1469 flow [2024-11-19 01:50:03,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1469, PETRI_PLACES=118, PETRI_TRANSITIONS=142} [2024-11-19 01:50:03,961 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-19 01:50:03,961 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 142 transitions, 1469 flow [2024-11-19 01:50:03,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 16 states have internal predecessors, (136), 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) [2024-11-19 01:50:03,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:03,962 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:03,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:50:04,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:04,164 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:04,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash -73361006, now seen corresponding path program 4 times [2024-11-19 01:50:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515561453] [2024-11-19 01:50:04,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:04,176 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:04,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:04,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:04,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515561453] [2024-11-19 01:50:04,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515561453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:04,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708543031] [2024-11-19 01:50:04,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:04,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:04,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:04,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:04,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:50:04,289 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:04,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:04,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:04,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:04,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708543031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:04,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:04,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-11-19 01:50:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10047975] [2024-11-19 01:50:04,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:04,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:50:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:04,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:50:04,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:50:04,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:04,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 142 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-11-19 01:50:04,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:04,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:04,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:05,050 INFO L124 PetriNetUnfolderBase]: 3575/5846 cut-off events. [2024-11-19 01:50:05,051 INFO L125 PetriNetUnfolderBase]: For 24866/24866 co-relation queries the response was YES. [2024-11-19 01:50:05,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28367 conditions, 5846 events. 3575/5846 cut-off events. For 24866/24866 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 33540 event pairs, 499 based on Foata normal form. 60/5906 useless extension candidates. Maximal degree in co-relation 28289. Up to 2568 conditions per place. [2024-11-19 01:50:05,088 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 281 selfloop transitions, 52 changer transitions 8/342 dead transitions. [2024-11-19 01:50:05,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 342 transitions, 3683 flow [2024-11-19 01:50:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:50:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:50:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-11-19 01:50:05,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44755244755244755 [2024-11-19 01:50:05,090 INFO L175 Difference]: Start difference. First operand has 118 places, 142 transitions, 1469 flow. Second operand 11 states and 128 transitions. [2024-11-19 01:50:05,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 342 transitions, 3683 flow [2024-11-19 01:50:05,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 342 transitions, 3589 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:05,135 INFO L231 Difference]: Finished difference. Result has 125 places, 168 transitions, 1838 flow [2024-11-19 01:50:05,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1838, PETRI_PLACES=125, PETRI_TRANSITIONS=168} [2024-11-19 01:50:05,136 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2024-11-19 01:50:05,136 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 168 transitions, 1838 flow [2024-11-19 01:50:05,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-11-19 01:50:05,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:05,136 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:05,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:50:05,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:05,337 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:05,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1595445062, now seen corresponding path program 5 times [2024-11-19 01:50:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:05,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180274201] [2024-11-19 01:50:05,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:05,354 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:50:05,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180274201] [2024-11-19 01:50:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180274201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208723221] [2024-11-19 01:50:05,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:05,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:05,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:05,408 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:05,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:50:05,497 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:50:05,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:05,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:05,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:05,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:05,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208723221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:05,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 01:50:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056183237] [2024-11-19 01:50:05,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:05,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:50:05,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:05,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:50:05,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:50:05,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:05,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 168 transitions, 1838 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-11-19 01:50:05,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:05,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:05,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:06,872 INFO L124 PetriNetUnfolderBase]: 5221/8428 cut-off events. [2024-11-19 01:50:06,872 INFO L125 PetriNetUnfolderBase]: For 45202/45202 co-relation queries the response was YES. [2024-11-19 01:50:06,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43147 conditions, 8428 events. 5221/8428 cut-off events. For 45202/45202 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 50345 event pairs, 565 based on Foata normal form. 268/8696 useless extension candidates. Maximal degree in co-relation 40969. Up to 2543 conditions per place. [2024-11-19 01:50:06,921 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 335 selfloop transitions, 98 changer transitions 6/440 dead transitions. [2024-11-19 01:50:06,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 440 transitions, 4776 flow [2024-11-19 01:50:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:50:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 01:50:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 210 transitions. [2024-11-19 01:50:06,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-11-19 01:50:06,923 INFO L175 Difference]: Start difference. First operand has 125 places, 168 transitions, 1838 flow. Second operand 20 states and 210 transitions. [2024-11-19 01:50:06,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 440 transitions, 4776 flow [2024-11-19 01:50:07,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 440 transitions, 4596 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:07,007 INFO L231 Difference]: Finished difference. Result has 153 places, 214 transitions, 2553 flow [2024-11-19 01:50:07,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2553, PETRI_PLACES=153, PETRI_TRANSITIONS=214} [2024-11-19 01:50:07,008 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2024-11-19 01:50:07,008 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 214 transitions, 2553 flow [2024-11-19 01:50:07,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-11-19 01:50:07,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:07,009 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:07,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 01:50:07,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 01:50:07,210 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:07,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:07,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1971210578, now seen corresponding path program 6 times [2024-11-19 01:50:07,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:07,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948657040] [2024-11-19 01:50:07,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:07,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:07,243 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:50:07,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:07,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948657040] [2024-11-19 01:50:07,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948657040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:07,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586838151] [2024-11-19 01:50:07,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:07,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:07,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:07,312 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:07,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:50:07,395 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:50:07,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:07,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:07,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:07,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:50:07,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586838151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:07,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:07,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2024-11-19 01:50:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622685050] [2024-11-19 01:50:07,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:07,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:50:07,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:07,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:50:07,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:50:07,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:07,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 214 transitions, 2553 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2024-11-19 01:50:07,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:07,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:07,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:08,582 INFO L124 PetriNetUnfolderBase]: 5177/8393 cut-off events. [2024-11-19 01:50:08,582 INFO L125 PetriNetUnfolderBase]: For 67340/67340 co-relation queries the response was YES. [2024-11-19 01:50:08,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49680 conditions, 8393 events. 5177/8393 cut-off events. For 67340/67340 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 50118 event pairs, 464 based on Foata normal form. 98/8491 useless extension candidates. Maximal degree in co-relation 48022. Up to 1859 conditions per place. [2024-11-19 01:50:08,648 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 319 selfloop transitions, 133 changer transitions 5/458 dead transitions. [2024-11-19 01:50:08,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 458 transitions, 5416 flow [2024-11-19 01:50:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:50:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 01:50:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 204 transitions. [2024-11-19 01:50:08,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-11-19 01:50:08,649 INFO L175 Difference]: Start difference. First operand has 153 places, 214 transitions, 2553 flow. Second operand 20 states and 204 transitions. [2024-11-19 01:50:08,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 458 transitions, 5416 flow [2024-11-19 01:50:08,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 458 transitions, 5259 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:08,977 INFO L231 Difference]: Finished difference. Result has 173 places, 237 transitions, 3123 flow [2024-11-19 01:50:08,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3123, PETRI_PLACES=173, PETRI_TRANSITIONS=237} [2024-11-19 01:50:08,978 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 147 predicate places. [2024-11-19 01:50:08,978 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 237 transitions, 3123 flow [2024-11-19 01:50:08,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2024-11-19 01:50:08,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:08,978 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:08,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 01:50:09,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:09,179 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:09,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash -866982130, now seen corresponding path program 7 times [2024-11-19 01:50:09,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:09,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301812167] [2024-11-19 01:50:09,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:09,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:09,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:09,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301812167] [2024-11-19 01:50:09,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301812167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:09,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921181666] [2024-11-19 01:50:09,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:09,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:09,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:09,437 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:09,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:50:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:09,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:09,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:09,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:09,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921181666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:09,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:09,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-19 01:50:09,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953465908] [2024-11-19 01:50:09,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:09,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:50:09,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:09,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:50:09,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:50:09,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:09,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 237 transitions, 3123 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 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) [2024-11-19 01:50:09,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:09,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:09,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:11,377 INFO L124 PetriNetUnfolderBase]: 6068/9833 cut-off events. [2024-11-19 01:50:11,377 INFO L125 PetriNetUnfolderBase]: For 105488/105488 co-relation queries the response was YES. [2024-11-19 01:50:11,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63173 conditions, 9833 events. 6068/9833 cut-off events. For 105488/105488 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 60216 event pairs, 896 based on Foata normal form. 45/9878 useless extension candidates. Maximal degree in co-relation 61352. Up to 4425 conditions per place. [2024-11-19 01:50:11,581 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 342 selfloop transitions, 92 changer transitions 18/453 dead transitions. [2024-11-19 01:50:11,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 453 transitions, 5819 flow [2024-11-19 01:50:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:50:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:50:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 151 transitions. [2024-11-19 01:50:11,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41483516483516486 [2024-11-19 01:50:11,583 INFO L175 Difference]: Start difference. First operand has 173 places, 237 transitions, 3123 flow. Second operand 14 states and 151 transitions. [2024-11-19 01:50:11,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 453 transitions, 5819 flow [2024-11-19 01:50:11,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 453 transitions, 5565 flow, removed 34 selfloop flow, removed 16 redundant places. [2024-11-19 01:50:11,885 INFO L231 Difference]: Finished difference. Result has 175 places, 251 transitions, 3353 flow [2024-11-19 01:50:11,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3353, PETRI_PLACES=175, PETRI_TRANSITIONS=251} [2024-11-19 01:50:11,885 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2024-11-19 01:50:11,885 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 251 transitions, 3353 flow [2024-11-19 01:50:11,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 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) [2024-11-19 01:50:11,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:11,886 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:11,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 01:50:12,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 01:50:12,086 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:12,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1875638076, now seen corresponding path program 8 times [2024-11-19 01:50:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:12,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95289866] [2024-11-19 01:50:12,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:12,106 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:12,107 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:12,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:12,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95289866] [2024-11-19 01:50:12,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95289866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:12,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835758261] [2024-11-19 01:50:12,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:12,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:12,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:12,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:12,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:50:12,270 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:12,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:12,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:12,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:12,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:50:12,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835758261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:12,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:12,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-19 01:50:12,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803936076] [2024-11-19 01:50:12,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:12,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:50:12,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:12,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:50:12,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:50:12,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:12,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 251 transitions, 3353 flow. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:12,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:12,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:12,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:14,289 INFO L124 PetriNetUnfolderBase]: 7593/12161 cut-off events. [2024-11-19 01:50:14,289 INFO L125 PetriNetUnfolderBase]: For 133791/133791 co-relation queries the response was YES. [2024-11-19 01:50:14,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79543 conditions, 12161 events. 7593/12161 cut-off events. For 133791/133791 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 76035 event pairs, 851 based on Foata normal form. 60/12221 useless extension candidates. Maximal degree in co-relation 76730. Up to 6040 conditions per place. [2024-11-19 01:50:14,386 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 372 selfloop transitions, 112 changer transitions 10/495 dead transitions. [2024-11-19 01:50:14,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 495 transitions, 6383 flow [2024-11-19 01:50:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:50:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:50:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-11-19 01:50:14,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-11-19 01:50:14,388 INFO L175 Difference]: Start difference. First operand has 175 places, 251 transitions, 3353 flow. Second operand 14 states and 160 transitions. [2024-11-19 01:50:14,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 495 transitions, 6383 flow [2024-11-19 01:50:14,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 495 transitions, 6322 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:14,917 INFO L231 Difference]: Finished difference. Result has 185 places, 283 transitions, 3969 flow [2024-11-19 01:50:14,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3969, PETRI_PLACES=185, PETRI_TRANSITIONS=283} [2024-11-19 01:50:14,918 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 159 predicate places. [2024-11-19 01:50:14,918 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 283 transitions, 3969 flow [2024-11-19 01:50:14,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:14,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:14,918 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:14,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 01:50:15,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 01:50:15,124 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:15,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1969297986, now seen corresponding path program 9 times [2024-11-19 01:50:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:15,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173403195] [2024-11-19 01:50:15,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:15,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 01:50:15,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:15,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173403195] [2024-11-19 01:50:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173403195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000090514] [2024-11-19 01:50:15,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:15,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:15,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:15,304 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:15,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:50:15,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 01:50:15,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:15,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:15,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:15,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:50:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000090514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:15,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:15,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-19 01:50:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250328710] [2024-11-19 01:50:15,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:15,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:50:15,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:15,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:50:15,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:50:15,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:15,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 283 transitions, 3969 flow. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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) [2024-11-19 01:50:15,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:15,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:15,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:18,117 INFO L124 PetriNetUnfolderBase]: 9121/14482 cut-off events. [2024-11-19 01:50:18,118 INFO L125 PetriNetUnfolderBase]: For 195212/195212 co-relation queries the response was YES. [2024-11-19 01:50:18,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100769 conditions, 14482 events. 9121/14482 cut-off events. For 195212/195212 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 92557 event pairs, 393 based on Foata normal form. 212/14694 useless extension candidates. Maximal degree in co-relation 96522. Up to 3414 conditions per place. [2024-11-19 01:50:18,257 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 373 selfloop transitions, 238 changer transitions 4/616 dead transitions. [2024-11-19 01:50:18,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 616 transitions, 8183 flow [2024-11-19 01:50:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 01:50:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 01:50:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 254 transitions. [2024-11-19 01:50:18,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3757396449704142 [2024-11-19 01:50:18,261 INFO L175 Difference]: Start difference. First operand has 185 places, 283 transitions, 3969 flow. Second operand 26 states and 254 transitions. [2024-11-19 01:50:18,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 616 transitions, 8183 flow [2024-11-19 01:50:18,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 616 transitions, 7949 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:18,967 INFO L231 Difference]: Finished difference. Result has 218 places, 342 transitions, 5349 flow [2024-11-19 01:50:18,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3733, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5349, PETRI_PLACES=218, PETRI_TRANSITIONS=342} [2024-11-19 01:50:18,968 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 192 predicate places. [2024-11-19 01:50:18,968 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 342 transitions, 5349 flow [2024-11-19 01:50:18,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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) [2024-11-19 01:50:18,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:18,969 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:18,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:19,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-19 01:50:19,176 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:19,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1877048596, now seen corresponding path program 10 times [2024-11-19 01:50:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:19,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990740721] [2024-11-19 01:50:19,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:19,195 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:19,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:19,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:19,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990740721] [2024-11-19 01:50:19,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990740721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:19,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131862326] [2024-11-19 01:50:19,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:19,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:19,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:19,266 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:19,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:50:19,358 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:19,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:19,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:19,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:19,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:19,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131862326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:19,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:19,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 01:50:19,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2287767] [2024-11-19 01:50:19,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:19,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:50:19,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:50:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:50:19,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:19,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 342 transitions, 5349 flow. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:19,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:19,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:19,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:22,824 INFO L124 PetriNetUnfolderBase]: 9681/15455 cut-off events. [2024-11-19 01:50:22,824 INFO L125 PetriNetUnfolderBase]: For 307829/307829 co-relation queries the response was YES. [2024-11-19 01:50:22,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119784 conditions, 15455 events. 9681/15455 cut-off events. For 307829/307829 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 100820 event pairs, 461 based on Foata normal form. 90/15545 useless extension candidates. Maximal degree in co-relation 117564. Up to 5097 conditions per place. [2024-11-19 01:50:22,961 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 365 selfloop transitions, 234 changer transitions 7/607 dead transitions. [2024-11-19 01:50:22,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 607 transitions, 9106 flow [2024-11-19 01:50:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:50:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:50:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 203 transitions. [2024-11-19 01:50:22,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-11-19 01:50:22,964 INFO L175 Difference]: Start difference. First operand has 218 places, 342 transitions, 5349 flow. Second operand 21 states and 203 transitions. [2024-11-19 01:50:22,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 607 transitions, 9106 flow [2024-11-19 01:50:24,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 607 transitions, 8776 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-11-19 01:50:24,570 INFO L231 Difference]: Finished difference. Result has 240 places, 372 transitions, 6363 flow [2024-11-19 01:50:24,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=5041, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6363, PETRI_PLACES=240, PETRI_TRANSITIONS=372} [2024-11-19 01:50:24,571 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 214 predicate places. [2024-11-19 01:50:24,571 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 372 transitions, 6363 flow [2024-11-19 01:50:24,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:24,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:24,572 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:24,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:24,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 01:50:24,772 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:24,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1893143792, now seen corresponding path program 11 times [2024-11-19 01:50:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:24,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590487012] [2024-11-19 01:50:24,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:24,808 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:50:24,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:24,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:24,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590487012] [2024-11-19 01:50:24,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590487012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:24,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675353959] [2024-11-19 01:50:24,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:24,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:24,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:24,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:24,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:50:25,022 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:50:25,023 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:25,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:25,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:25,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:25,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675353959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:25,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:25,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 01:50:25,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900614637] [2024-11-19 01:50:25,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:25,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:50:25,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:50:25,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:50:25,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:25,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 372 transitions, 6363 flow. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 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) [2024-11-19 01:50:25,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:25,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:25,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:28,252 INFO L124 PetriNetUnfolderBase]: 10629/17000 cut-off events. [2024-11-19 01:50:28,252 INFO L125 PetriNetUnfolderBase]: For 417842/417842 co-relation queries the response was YES. [2024-11-19 01:50:28,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139243 conditions, 17000 events. 10629/17000 cut-off events. For 417842/417842 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 112538 event pairs, 1205 based on Foata normal form. 90/17090 useless extension candidates. Maximal degree in co-relation 136736. Up to 8052 conditions per place. [2024-11-19 01:50:28,493 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 398 selfloop transitions, 154 changer transitions 14/567 dead transitions. [2024-11-19 01:50:28,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 567 transitions, 9290 flow [2024-11-19 01:50:28,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:50:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:50:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-11-19 01:50:28,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40236686390532544 [2024-11-19 01:50:28,495 INFO L175 Difference]: Start difference. First operand has 240 places, 372 transitions, 6363 flow. Second operand 13 states and 136 transitions. [2024-11-19 01:50:28,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 567 transitions, 9290 flow [2024-11-19 01:50:31,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 567 transitions, 9146 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-11-19 01:50:31,359 INFO L231 Difference]: Finished difference. Result has 253 places, 389 transitions, 6898 flow [2024-11-19 01:50:31,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=6241, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6898, PETRI_PLACES=253, PETRI_TRANSITIONS=389} [2024-11-19 01:50:31,360 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-11-19 01:50:31,360 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 389 transitions, 6898 flow [2024-11-19 01:50:31,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 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) [2024-11-19 01:50:31,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:31,361 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:31,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 01:50:31,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:31,565 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:31,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash -169344886, now seen corresponding path program 12 times [2024-11-19 01:50:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:31,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434302172] [2024-11-19 01:50:31,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:31,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:31,588 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:50:31,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434302172] [2024-11-19 01:50:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434302172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98933229] [2024-11-19 01:50:31,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:31,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:31,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:31,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:31,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 01:50:31,725 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:50:31,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:31,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:31,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:31,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98933229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:31,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-19 01:50:31,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918125724] [2024-11-19 01:50:31,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:31,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:50:31,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:50:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:50:31,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:31,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 389 transitions, 6898 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2024-11-19 01:50:31,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:31,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:31,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:35,699 INFO L124 PetriNetUnfolderBase]: 12652/20243 cut-off events. [2024-11-19 01:50:35,699 INFO L125 PetriNetUnfolderBase]: For 534584/534584 co-relation queries the response was YES. [2024-11-19 01:50:35,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170585 conditions, 20243 events. 12652/20243 cut-off events. For 534584/534584 co-relation queries the response was YES. Maximal size of possible extension queue 755. Compared 139755 event pairs, 564 based on Foata normal form. 72/20315 useless extension candidates. Maximal degree in co-relation 167582. Up to 6846 conditions per place. [2024-11-19 01:50:35,968 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 299 selfloop transitions, 354 changer transitions 12/666 dead transitions. [2024-11-19 01:50:35,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 666 transitions, 11898 flow [2024-11-19 01:50:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:50:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:50:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 145 transitions. [2024-11-19 01:50:35,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-11-19 01:50:35,969 INFO L175 Difference]: Start difference. First operand has 253 places, 389 transitions, 6898 flow. Second operand 15 states and 145 transitions. [2024-11-19 01:50:35,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 666 transitions, 11898 flow [2024-11-19 01:50:39,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 666 transitions, 11616 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:39,597 INFO L231 Difference]: Finished difference. Result has 270 places, 499 transitions, 10023 flow [2024-11-19 01:50:39,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=6706, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10023, PETRI_PLACES=270, PETRI_TRANSITIONS=499} [2024-11-19 01:50:39,598 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 244 predicate places. [2024-11-19 01:50:39,598 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 499 transitions, 10023 flow [2024-11-19 01:50:39,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2024-11-19 01:50:39,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:39,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:39,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 01:50:39,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 01:50:39,800 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:39,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2100107518, now seen corresponding path program 13 times [2024-11-19 01:50:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:39,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740613094] [2024-11-19 01:50:39,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:39,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:39,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:39,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740613094] [2024-11-19 01:50:39,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740613094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:39,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891156263] [2024-11-19 01:50:39,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:39,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:39,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:39,879 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:39,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 01:50:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:39,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:39,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:40,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:40,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891156263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:40,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:40,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 01:50:40,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382929193] [2024-11-19 01:50:40,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:40,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:50:40,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:50:40,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:50:40,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:40,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 499 transitions, 10023 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:40,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:40,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:40,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:45,201 INFO L124 PetriNetUnfolderBase]: 13390/21433 cut-off events. [2024-11-19 01:50:45,201 INFO L125 PetriNetUnfolderBase]: For 699252/699252 co-relation queries the response was YES. [2024-11-19 01:50:45,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192870 conditions, 21433 events. 13390/21433 cut-off events. For 699252/699252 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 149609 event pairs, 1505 based on Foata normal form. 36/21469 useless extension candidates. Maximal degree in co-relation 189619. Up to 9199 conditions per place. [2024-11-19 01:50:45,451 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 468 selfloop transitions, 234 changer transitions 9/712 dead transitions. [2024-11-19 01:50:45,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 712 transitions, 13643 flow [2024-11-19 01:50:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:50:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:50:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-11-19 01:50:45,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4408284023668639 [2024-11-19 01:50:45,453 INFO L175 Difference]: Start difference. First operand has 270 places, 499 transitions, 10023 flow. Second operand 13 states and 149 transitions. [2024-11-19 01:50:45,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 712 transitions, 13643 flow [2024-11-19 01:50:51,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 712 transitions, 13492 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:51,578 INFO L231 Difference]: Finished difference. Result has 286 places, 515 transitions, 10850 flow [2024-11-19 01:50:51,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=9932, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10850, PETRI_PLACES=286, PETRI_TRANSITIONS=515} [2024-11-19 01:50:51,579 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2024-11-19 01:50:51,579 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 515 transitions, 10850 flow [2024-11-19 01:50:51,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:51,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:51,579 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:51,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 01:50:51,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 01:50:51,784 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:51,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1251032382, now seen corresponding path program 14 times [2024-11-19 01:50:51,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:51,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164017495] [2024-11-19 01:50:51,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:51,802 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:51,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:51,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:51,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164017495] [2024-11-19 01:50:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164017495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:51,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395360590] [2024-11-19 01:50:51,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:51,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:51,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:51,860 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:51,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 01:50:51,949 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:51,949 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:51,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:51,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:52,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:50:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395360590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:52,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 01:50:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128792612] [2024-11-19 01:50:52,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:52,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:50:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:52,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:50:52,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:50:52,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:50:52,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 515 transitions, 10850 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:52,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:52,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:50:52,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:57,853 INFO L124 PetriNetUnfolderBase]: 15384/24722 cut-off events. [2024-11-19 01:50:57,853 INFO L125 PetriNetUnfolderBase]: For 851342/851342 co-relation queries the response was YES. [2024-11-19 01:50:58,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227894 conditions, 24722 events. 15384/24722 cut-off events. For 851342/851342 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 177443 event pairs, 800 based on Foata normal form. 128/24850 useless extension candidates. Maximal degree in co-relation 224591. Up to 8828 conditions per place. [2024-11-19 01:50:58,180 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 348 selfloop transitions, 436 changer transitions 7/792 dead transitions. [2024-11-19 01:50:58,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 792 transitions, 16394 flow [2024-11-19 01:50:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:50:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 01:50:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 162 transitions. [2024-11-19 01:50:58,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-11-19 01:50:58,181 INFO L175 Difference]: Start difference. First operand has 286 places, 515 transitions, 10850 flow. Second operand 16 states and 162 transitions. [2024-11-19 01:50:58,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 792 transitions, 16394 flow [2024-11-19 01:51:07,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 792 transitions, 16067 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-19 01:51:07,635 INFO L231 Difference]: Finished difference. Result has 302 places, 610 transitions, 14487 flow [2024-11-19 01:51:07,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=10560, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14487, PETRI_PLACES=302, PETRI_TRANSITIONS=610} [2024-11-19 01:51:07,636 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 276 predicate places. [2024-11-19 01:51:07,636 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 610 transitions, 14487 flow [2024-11-19 01:51:07,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:07,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:07,636 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:07,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 01:51:07,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:07,841 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:51:07,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -74044674, now seen corresponding path program 15 times [2024-11-19 01:51:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:07,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978497255] [2024-11-19 01:51:07,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:07,868 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:51:07,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:51:07,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:07,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978497255] [2024-11-19 01:51:07,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978497255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:07,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154143119] [2024-11-19 01:51:07,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:07,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:07,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:07,960 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:51:07,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 01:51:08,076 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:51:08,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:08,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:51:08,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:51:08,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:51:08,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154143119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:08,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:08,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 01:51:08,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73932628] [2024-11-19 01:51:08,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:08,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:51:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:51:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:51:08,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-19 01:51:08,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 610 transitions, 14487 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-11-19 01:51:08,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:08,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-19 01:51:08,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:14,378 INFO L124 PetriNetUnfolderBase]: 15763/25418 cut-off events. [2024-11-19 01:51:14,379 INFO L125 PetriNetUnfolderBase]: For 1013275/1013275 co-relation queries the response was YES. [2024-11-19 01:51:14,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249213 conditions, 25418 events. 15763/25418 cut-off events. For 1013275/1013275 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 184221 event pairs, 693 based on Foata normal form. 72/25490 useless extension candidates. Maximal degree in co-relation 246039. Up to 5077 conditions per place. [2024-11-19 01:51:15,078 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 442 selfloop transitions, 473 changer transitions 4/920 dead transitions. [2024-11-19 01:51:15,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 920 transitions, 19840 flow [2024-11-19 01:51:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 01:51:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 01:51:15,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 232 transitions. [2024-11-19 01:51:15,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3879598662207358 [2024-11-19 01:51:15,080 INFO L175 Difference]: Start difference. First operand has 302 places, 610 transitions, 14487 flow. Second operand 23 states and 232 transitions. [2024-11-19 01:51:15,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 920 transitions, 19840 flow