./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../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-803cd42-m [2024-11-22 13:49:01,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:49:01,076 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:49:01,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:49:01,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:49:01,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:49:01,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:49:01,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:49:01,100 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:49:01,100 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:49:01,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:49:01,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:49:01,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:49:01,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:49:01,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:49:01,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:49:01,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:49:01,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:49:01,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:49:01,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:49:01,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:49:01,107 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:49:01,108 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:49:01,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:49:01,108 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:49:01,108 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:49:01,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:49:01,108 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:49:01,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:49:01,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:49:01,109 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:49:01,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:49:01,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:49:01,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:49:01,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:49:01,110 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:49:01,110 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:49:01,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:49:01,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:49:01,110 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:49:01,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:49:01,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:49:01,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-11-22 13:49:01,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:49:01,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:49:01,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:49:01,322 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:49:01,323 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:49:01,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-22 13:49:02,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:49:02,668 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:49:02,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-22 13:49:02,674 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9462847f/b5c569444fd94b07b55efa9a8944c9ef/FLAG64ad43636 [2024-11-22 13:49:02,696 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9462847f/b5c569444fd94b07b55efa9a8944c9ef [2024-11-22 13:49:02,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:49:02,699 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:49:02,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:49:02,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:49:02,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:49:02,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:02,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610fa1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02, skipping insertion in model container [2024-11-22 13:49:02,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:02,746 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:49:02,892 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] [2024-11-22 13:49:02,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:49:02,910 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:49:02,932 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] [2024-11-22 13:49:02,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:49:02,949 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:49:02,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02 WrapperNode [2024-11-22 13:49:02,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:49:02,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:49:02,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:49:02,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:49:02,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:02,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:02,987 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 191 [2024-11-22 13:49:02,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:49:02,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:49:02,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:49:02,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:49:02,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:02,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,012 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]. [2024-11-22 13:49:03,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:49:03,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:49:03,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:49:03,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:49:03,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (1/1) ... [2024-11-22 13:49:03,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:49:03,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:03,063 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) [2024-11-22 13:49:03,065 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 [2024-11-22 13:49:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:49:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:49:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:49:03,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:49:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:49:03,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:49:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:49:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:49:03,109 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:49:03,211 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:49:03,213 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:49:03,432 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:49:03,432 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:49:03,641 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:49:03,641 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 13:49:03,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:03 BoogieIcfgContainer [2024-11-22 13:49:03,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:49:03,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:49:03,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:49:03,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:49:03,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:49:02" (1/3) ... [2024-11-22 13:49:03,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe6feb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:03, skipping insertion in model container [2024-11-22 13:49:03,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:02" (2/3) ... [2024-11-22 13:49:03,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe6feb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:03, skipping insertion in model container [2024-11-22 13:49:03,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:03" (3/3) ... [2024-11-22 13:49:03,651 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-11-22 13:49:03,678 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:49:03,678 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:49:03,678 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:49:03,715 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:49:03,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 66 flow [2024-11-22 13:49:03,766 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-22 13:49:03,768 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:49:03,770 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. [2024-11-22 13:49:03,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 26 transitions, 66 flow [2024-11-22 13:49:03,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 23 transitions, 58 flow [2024-11-22 13:49:03,780 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:49:03,787 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;@51c9abe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:49:03,787 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:49:03,796 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:49:03,796 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-22 13:49:03,796 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:49:03,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:03,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:03,797 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:03,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash -917773730, now seen corresponding path program 1 times [2024-11-22 13:49:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918973288] [2024-11-22 13:49:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:04,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:04,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918973288] [2024-11-22 13:49:04,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918973288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:04,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:04,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:49:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888319624] [2024-11-22 13:49:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:04,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:49:04,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:49:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:49:04,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-22 13:49:04,102 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) [2024-11-22 13:49:04,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:04,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-22 13:49:04,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:04,195 INFO L124 PetriNetUnfolderBase]: 94/185 cut-off events. [2024-11-22 13:49:04,195 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-22 13:49:04,196 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. [2024-11-22 13:49:04,198 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 27 selfloop transitions, 3 changer transitions 1/34 dead transitions. [2024-11-22 13:49:04,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 151 flow [2024-11-22 13:49:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:49:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:49:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-11-22 13:49:04,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-11-22 13:49:04,209 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 58 flow. Second operand 3 states and 47 transitions. [2024-11-22 13:49:04,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 151 flow [2024-11-22 13:49:04,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 34 transitions, 137 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:49:04,213 INFO L231 Difference]: Finished difference. Result has 25 places, 25 transitions, 69 flow [2024-11-22 13:49:04,215 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} [2024-11-22 13:49:04,218 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2024-11-22 13:49:04,218 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 25 transitions, 69 flow [2024-11-22 13:49:04,218 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) [2024-11-22 13:49:04,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:04,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:04,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:49:04,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:04,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1358368092, now seen corresponding path program 1 times [2024-11-22 13:49:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:04,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783488501] [2024-11-22 13:49:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:04,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:04,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:04,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783488501] [2024-11-22 13:49:04,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783488501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:04,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:04,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:04,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357481057] [2024-11-22 13:49:04,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:04,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:04,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:04,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:04,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:04,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-22 13:49:04,389 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) [2024-11-22 13:49:04,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:04,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-22 13:49:04,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:04,531 INFO L124 PetriNetUnfolderBase]: 188/338 cut-off events. [2024-11-22 13:49:04,531 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-22 13:49:04,533 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. [2024-11-22 13:49:04,535 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 39 selfloop transitions, 9 changer transitions 1/51 dead transitions. [2024-11-22 13:49:04,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 51 transitions, 240 flow [2024-11-22 13:49:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:04,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-11-22 13:49:04,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 13:49:04,538 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 69 flow. Second operand 5 states and 65 transitions. [2024-11-22 13:49:04,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 51 transitions, 240 flow [2024-11-22 13:49:04,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 51 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:04,540 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 124 flow [2024-11-22 13:49:04,540 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} [2024-11-22 13:49:04,540 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-11-22 13:49:04,541 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 124 flow [2024-11-22 13:49:04,541 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) [2024-11-22 13:49:04,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:04,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:04,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:49:04,541 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:04,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1429312728, now seen corresponding path program 2 times [2024-11-22 13:49:04,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:04,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484102812] [2024-11-22 13:49:04,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:04,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:04,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:04,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:04,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484102812] [2024-11-22 13:49:04,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484102812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:04,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:04,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:49:04,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625735527] [2024-11-22 13:49:04,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:04,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:49:04,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:49:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:49:04,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-22 13:49:04,670 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) [2024-11-22 13:49:04,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:04,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-22 13:49:04,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:04,857 INFO L124 PetriNetUnfolderBase]: 230/424 cut-off events. [2024-11-22 13:49:04,857 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-22 13:49:04,877 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. [2024-11-22 13:49:04,880 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 62 selfloop transitions, 12 changer transitions 1/77 dead transitions. [2024-11-22 13:49:04,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 77 transitions, 437 flow [2024-11-22 13:49:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:49:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:49:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-11-22 13:49:04,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-11-22 13:49:04,882 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 124 flow. Second operand 7 states and 92 transitions. [2024-11-22 13:49:04,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 77 transitions, 437 flow [2024-11-22 13:49:04,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 77 transitions, 437 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:49:04,886 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 212 flow [2024-11-22 13:49:04,886 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} [2024-11-22 13:49:04,887 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-22 13:49:04,887 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 212 flow [2024-11-22 13:49:04,888 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) [2024-11-22 13:49:04,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:04,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:04,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:49:04,888 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:04,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:04,889 INFO L85 PathProgramCache]: Analyzing trace with hash 469608532, now seen corresponding path program 3 times [2024-11-22 13:49:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679073798] [2024-11-22 13:49:04,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:04,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:04,909 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:49:04,910 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:04,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679073798] [2024-11-22 13:49:04,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679073798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:04,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:04,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752368727] [2024-11-22 13:49:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:04,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:04,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:04,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:04,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-22 13:49:04,970 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) [2024-11-22 13:49:04,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:04,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-22 13:49:04,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:05,083 INFO L124 PetriNetUnfolderBase]: 292/535 cut-off events. [2024-11-22 13:49:05,084 INFO L125 PetriNetUnfolderBase]: For 857/857 co-relation queries the response was YES. [2024-11-22 13:49:05,085 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. [2024-11-22 13:49:05,087 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 52 selfloop transitions, 10 changer transitions 4/68 dead transitions. [2024-11-22 13:49:05,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 497 flow [2024-11-22 13:49:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-22 13:49:05,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-22 13:49:05,088 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 212 flow. Second operand 5 states and 63 transitions. [2024-11-22 13:49:05,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 497 flow [2024-11-22 13:49:05,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 485 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:05,092 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 259 flow [2024-11-22 13:49:05,092 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} [2024-11-22 13:49:05,093 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-11-22 13:49:05,093 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 259 flow [2024-11-22 13:49:05,093 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) [2024-11-22 13:49:05,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:05,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:05,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:49:05,094 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:05,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1005547373, now seen corresponding path program 1 times [2024-11-22 13:49:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781002664] [2024-11-22 13:49:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:05,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:05,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:05,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781002664] [2024-11-22 13:49:05,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781002664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:05,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:05,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:05,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863432327] [2024-11-22 13:49:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:05,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:05,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-22 13:49:05,174 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) [2024-11-22 13:49:05,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:05,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-22 13:49:05,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:05,302 INFO L124 PetriNetUnfolderBase]: 305/553 cut-off events. [2024-11-22 13:49:05,303 INFO L125 PetriNetUnfolderBase]: For 1229/1233 co-relation queries the response was YES. [2024-11-22 13:49:05,304 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. [2024-11-22 13:49:05,306 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 52 selfloop transitions, 7 changer transitions 7/69 dead transitions. [2024-11-22 13:49:05,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 533 flow [2024-11-22 13:49:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-11-22 13:49:05,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2024-11-22 13:49:05,308 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 259 flow. Second operand 5 states and 67 transitions. [2024-11-22 13:49:05,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 533 flow [2024-11-22 13:49:05,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 494 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-22 13:49:05,316 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 261 flow [2024-11-22 13:49:05,317 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} [2024-11-22 13:49:05,317 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2024-11-22 13:49:05,318 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 261 flow [2024-11-22 13:49:05,318 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) [2024-11-22 13:49:05,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:05,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:05,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:49:05,319 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:05,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash -710500163, now seen corresponding path program 2 times [2024-11-22 13:49:05,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:05,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736117282] [2024-11-22 13:49:05,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:05,337 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:05,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:05,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736117282] [2024-11-22 13:49:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736117282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771305108] [2024-11-22 13:49:05,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:05,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:05,391 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) [2024-11-22 13:49:05,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:49:05,455 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:05,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:05,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:49:05,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:05,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:05,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771305108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:05,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:05,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-22 13:49:05,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353321920] [2024-11-22 13:49:05,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:05,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:49:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:49:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:49:05,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:05,535 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) [2024-11-22 13:49:05,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:05,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:05,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:05,815 INFO L124 PetriNetUnfolderBase]: 428/738 cut-off events. [2024-11-22 13:49:05,816 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2024-11-22 13:49:05,818 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. [2024-11-22 13:49:05,821 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 75 selfloop transitions, 52 changer transitions 2/130 dead transitions. [2024-11-22 13:49:05,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 1038 flow [2024-11-22 13:49:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:49:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:49:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 135 transitions. [2024-11-22 13:49:05,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3708791208791209 [2024-11-22 13:49:05,824 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 261 flow. Second operand 14 states and 135 transitions. [2024-11-22 13:49:05,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 1038 flow [2024-11-22 13:49:05,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 130 transitions, 981 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-22 13:49:05,835 INFO L231 Difference]: Finished difference. Result has 65 places, 79 transitions, 678 flow [2024-11-22 13:49:05,835 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} [2024-11-22 13:49:05,836 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-11-22 13:49:05,836 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 79 transitions, 678 flow [2024-11-22 13:49:05,836 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) [2024-11-22 13:49:05,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:05,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:05,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:49:06,041 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 [2024-11-22 13:49:06,043 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:06,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:06,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1226407250, now seen corresponding path program 4 times [2024-11-22 13:49:06,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:06,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393130000] [2024-11-22 13:49:06,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:06,053 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:06,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393130000] [2024-11-22 13:49:06,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393130000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:06,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:06,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:06,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728796013] [2024-11-22 13:49:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:06,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:06,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:06,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:06,082 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) [2024-11-22 13:49:06,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:06,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:06,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:06,234 INFO L124 PetriNetUnfolderBase]: 469/803 cut-off events. [2024-11-22 13:49:06,234 INFO L125 PetriNetUnfolderBase]: For 2566/2566 co-relation queries the response was YES. [2024-11-22 13:49:06,236 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. [2024-11-22 13:49:06,239 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 88 selfloop transitions, 41 changer transitions 0/130 dead transitions. [2024-11-22 13:49:06,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 130 transitions, 1255 flow [2024-11-22 13:49:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:49:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:49:06,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-11-22 13:49:06,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-11-22 13:49:06,241 INFO L175 Difference]: Start difference. First operand has 65 places, 79 transitions, 678 flow. Second operand 7 states and 76 transitions. [2024-11-22 13:49:06,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 130 transitions, 1255 flow [2024-11-22 13:49:06,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 130 transitions, 1174 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-22 13:49:06,249 INFO L231 Difference]: Finished difference. Result has 72 places, 98 transitions, 903 flow [2024-11-22 13:49:06,249 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} [2024-11-22 13:49:06,250 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-22 13:49:06,250 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 98 transitions, 903 flow [2024-11-22 13:49:06,250 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) [2024-11-22 13:49:06,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:06,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:06,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:49:06,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:06,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:06,251 INFO L85 PathProgramCache]: Analyzing trace with hash -641270421, now seen corresponding path program 3 times [2024-11-22 13:49:06,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:06,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708092851] [2024-11-22 13:49:06,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:06,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:06,263 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:49:06,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:06,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:06,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708092851] [2024-11-22 13:49:06,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708092851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:06,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:06,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:49:06,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999692554] [2024-11-22 13:49:06,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:06,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:49:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:49:06,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:49:06,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:06,318 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) [2024-11-22 13:49:06,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:06,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:06,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:06,473 INFO L124 PetriNetUnfolderBase]: 477/819 cut-off events. [2024-11-22 13:49:06,473 INFO L125 PetriNetUnfolderBase]: For 3232/3232 co-relation queries the response was YES. [2024-11-22 13:49:06,478 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. [2024-11-22 13:49:06,482 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 98 selfloop transitions, 36 changer transitions 0/135 dead transitions. [2024-11-22 13:49:06,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 135 transitions, 1399 flow [2024-11-22 13:49:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:49:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:49:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-22 13:49:06,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-11-22 13:49:06,483 INFO L175 Difference]: Start difference. First operand has 72 places, 98 transitions, 903 flow. Second operand 6 states and 74 transitions. [2024-11-22 13:49:06,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 135 transitions, 1399 flow [2024-11-22 13:49:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 135 transitions, 1351 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:06,496 INFO L231 Difference]: Finished difference. Result has 78 places, 101 transitions, 984 flow [2024-11-22 13:49:06,496 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} [2024-11-22 13:49:06,496 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2024-11-22 13:49:06,496 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 101 transitions, 984 flow [2024-11-22 13:49:06,497 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) [2024-11-22 13:49:06,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:06,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:06,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:49:06,497 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:06,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:06,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1589498937, now seen corresponding path program 4 times [2024-11-22 13:49:06,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:06,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106377703] [2024-11-22 13:49:06,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:06,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:06,511 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:06,511 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:06,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:06,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106377703] [2024-11-22 13:49:06,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106377703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:06,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:06,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303205290] [2024-11-22 13:49:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:06,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:06,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:06,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:06,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:06,542 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) [2024-11-22 13:49:06,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:06,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:06,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:06,695 INFO L124 PetriNetUnfolderBase]: 501/858 cut-off events. [2024-11-22 13:49:06,696 INFO L125 PetriNetUnfolderBase]: For 3473/3473 co-relation queries the response was YES. [2024-11-22 13:49:06,698 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. [2024-11-22 13:49:06,702 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 102 selfloop transitions, 25 changer transitions 4/132 dead transitions. [2024-11-22 13:49:06,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 1450 flow [2024-11-22 13:49:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-22 13:49:06,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-11-22 13:49:06,703 INFO L175 Difference]: Start difference. First operand has 78 places, 101 transitions, 984 flow. Second operand 5 states and 62 transitions. [2024-11-22 13:49:06,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 1450 flow [2024-11-22 13:49:06,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 132 transitions, 1394 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-22 13:49:06,712 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 1006 flow [2024-11-22 13:49:06,712 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} [2024-11-22 13:49:06,712 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2024-11-22 13:49:06,713 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 1006 flow [2024-11-22 13:49:06,713 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) [2024-11-22 13:49:06,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:06,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:06,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:49:06,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:06,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:06,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2077923714, now seen corresponding path program 5 times [2024-11-22 13:49:06,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:06,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298135404] [2024-11-22 13:49:06,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:06,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:06,725 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:06,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:06,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298135404] [2024-11-22 13:49:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298135404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:06,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:06,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:06,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294584769] [2024-11-22 13:49:06,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:06,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:06,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:06,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:06,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:06,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-22 13:49:06,778 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) [2024-11-22 13:49:06,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:06,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-22 13:49:06,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:06,890 INFO L124 PetriNetUnfolderBase]: 420/766 cut-off events. [2024-11-22 13:49:06,890 INFO L125 PetriNetUnfolderBase]: For 3696/3711 co-relation queries the response was YES. [2024-11-22 13:49:06,893 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. [2024-11-22 13:49:06,896 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 88 selfloop transitions, 28 changer transitions 1/129 dead transitions. [2024-11-22 13:49:06,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 1429 flow [2024-11-22 13:49:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-22 13:49:06,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-11-22 13:49:06,898 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 1006 flow. Second operand 5 states and 64 transitions. [2024-11-22 13:49:06,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 1429 flow [2024-11-22 13:49:06,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 129 transitions, 1398 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-22 13:49:06,908 INFO L231 Difference]: Finished difference. Result has 84 places, 109 transitions, 1138 flow [2024-11-22 13:49:06,908 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} [2024-11-22 13:49:06,908 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 58 predicate places. [2024-11-22 13:49:06,908 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 109 transitions, 1138 flow [2024-11-22 13:49:06,909 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) [2024-11-22 13:49:06,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:06,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:06,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:49:06,909 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:06,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash -111148459, now seen corresponding path program 5 times [2024-11-22 13:49:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:06,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069455570] [2024-11-22 13:49:06,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:06,919 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:06,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:06,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:06,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069455570] [2024-11-22 13:49:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069455570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:06,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:06,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:06,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862557724] [2024-11-22 13:49:06,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:06,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:06,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:06,966 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) [2024-11-22 13:49:06,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:06,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:06,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:07,128 INFO L124 PetriNetUnfolderBase]: 491/853 cut-off events. [2024-11-22 13:49:07,129 INFO L125 PetriNetUnfolderBase]: For 4146/4146 co-relation queries the response was YES. [2024-11-22 13:49:07,131 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. [2024-11-22 13:49:07,134 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 83 selfloop transitions, 58 changer transitions 2/144 dead transitions. [2024-11-22 13:49:07,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 1631 flow [2024-11-22 13:49:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:49:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:49:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-22 13:49:07,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-11-22 13:49:07,135 INFO L175 Difference]: Start difference. First operand has 84 places, 109 transitions, 1138 flow. Second operand 7 states and 77 transitions. [2024-11-22 13:49:07,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 1631 flow [2024-11-22 13:49:07,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 144 transitions, 1595 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:07,146 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 1281 flow [2024-11-22 13:49:07,146 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} [2024-11-22 13:49:07,146 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 65 predicate places. [2024-11-22 13:49:07,146 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 1281 flow [2024-11-22 13:49:07,146 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) [2024-11-22 13:49:07,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:07,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:07,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:49:07,147 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:07,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1904676022, now seen corresponding path program 6 times [2024-11-22 13:49:07,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:07,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910684101] [2024-11-22 13:49:07,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:49:07,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:07,162 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:49:07,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:07,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:07,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910684101] [2024-11-22 13:49:07,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910684101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:07,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:07,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099600827] [2024-11-22 13:49:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:07,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:07,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:07,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:07,218 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) [2024-11-22 13:49:07,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:07,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:07,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:07,350 INFO L124 PetriNetUnfolderBase]: 481/832 cut-off events. [2024-11-22 13:49:07,350 INFO L125 PetriNetUnfolderBase]: For 4360/4360 co-relation queries the response was YES. [2024-11-22 13:49:07,352 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. [2024-11-22 13:49:07,355 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 95 selfloop transitions, 33 changer transitions 0/129 dead transitions. [2024-11-22 13:49:07,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 1606 flow [2024-11-22 13:49:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-22 13:49:07,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-11-22 13:49:07,357 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 1281 flow. Second operand 5 states and 62 transitions. [2024-11-22 13:49:07,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 1606 flow [2024-11-22 13:49:07,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 1580 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-22 13:49:07,367 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 1341 flow [2024-11-22 13:49:07,368 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} [2024-11-22 13:49:07,369 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-11-22 13:49:07,370 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 1341 flow [2024-11-22 13:49:07,370 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) [2024-11-22 13:49:07,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:07,370 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:07,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:49:07,370 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:07,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:07,371 INFO L85 PathProgramCache]: Analyzing trace with hash 69521072, now seen corresponding path program 7 times [2024-11-22 13:49:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757934297] [2024-11-22 13:49:07,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:49:07,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:07,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757934297] [2024-11-22 13:49:07,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757934297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13653692] [2024-11-22 13:49:07,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:49:07,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:07,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:07,436 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) [2024-11-22 13:49:07,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:49:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:07,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:07,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:07,560 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:49:07,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13653692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:07,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:49:07,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-22 13:49:07,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326654547] [2024-11-22 13:49:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:07,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:49:07,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:49:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:49:07,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-22 13:49:07,561 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) [2024-11-22 13:49:07,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:07,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-22 13:49:07,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:07,674 INFO L124 PetriNetUnfolderBase]: 392/781 cut-off events. [2024-11-22 13:49:07,674 INFO L125 PetriNetUnfolderBase]: For 5487/5505 co-relation queries the response was YES. [2024-11-22 13:49:07,676 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. [2024-11-22 13:49:07,679 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 81 selfloop transitions, 2 changer transitions 19/136 dead transitions. [2024-11-22 13:49:07,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 1746 flow [2024-11-22 13:49:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-22 13:49:07,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-22 13:49:07,681 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 1341 flow. Second operand 5 states and 63 transitions. [2024-11-22 13:49:07,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 136 transitions, 1746 flow [2024-11-22 13:49:07,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 136 transitions, 1718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:07,692 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1337 flow [2024-11-22 13:49:07,692 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} [2024-11-22 13:49:07,693 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 72 predicate places. [2024-11-22 13:49:07,693 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1337 flow [2024-11-22 13:49:07,693 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) [2024-11-22 13:49:07,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:07,693 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:07,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:49:07,897 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 [2024-11-22 13:49:07,898 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:07,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1652307094, now seen corresponding path program 1 times [2024-11-22 13:49:07,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:07,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240361305] [2024-11-22 13:49:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:07,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:07,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:07,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:07,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240361305] [2024-11-22 13:49:07,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240361305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:07,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772537590] [2024-11-22 13:49:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:07,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:07,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:07,965 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) [2024-11-22 13:49:07,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:49:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:08,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:49:08,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:08,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:08,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772537590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:08,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:08,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-22 13:49:08,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535316150] [2024-11-22 13:49:08,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:08,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:49:08,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:08,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:49:08,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:49:08,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:08,097 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) [2024-11-22 13:49:08,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:08,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:08,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:08,303 INFO L124 PetriNetUnfolderBase]: 470/810 cut-off events. [2024-11-22 13:49:08,303 INFO L125 PetriNetUnfolderBase]: For 4533/4533 co-relation queries the response was YES. [2024-11-22 13:49:08,305 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. [2024-11-22 13:49:08,308 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 106 selfloop transitions, 43 changer transitions 1/151 dead transitions. [2024-11-22 13:49:08,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 151 transitions, 1835 flow [2024-11-22 13:49:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:49:08,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:49:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-11-22 13:49:08,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44711538461538464 [2024-11-22 13:49:08,309 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1337 flow. Second operand 8 states and 93 transitions. [2024-11-22 13:49:08,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 151 transitions, 1835 flow [2024-11-22 13:49:08,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 151 transitions, 1813 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-22 13:49:08,319 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 1371 flow [2024-11-22 13:49:08,319 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} [2024-11-22 13:49:08,319 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 73 predicate places. [2024-11-22 13:49:08,319 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 1371 flow [2024-11-22 13:49:08,320 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) [2024-11-22 13:49:08,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:08,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:08,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:49:08,520 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 [2024-11-22 13:49:08,521 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:08,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash 479703717, now seen corresponding path program 1 times [2024-11-22 13:49:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609461770] [2024-11-22 13:49:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:08,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:08,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609461770] [2024-11-22 13:49:08,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609461770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:08,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:08,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:08,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384394020] [2024-11-22 13:49:08,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:08,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:08,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-22 13:49:08,568 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) [2024-11-22 13:49:08,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:08,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-22 13:49:08,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:08,685 INFO L124 PetriNetUnfolderBase]: 407/715 cut-off events. [2024-11-22 13:49:08,685 INFO L125 PetriNetUnfolderBase]: For 5062/5068 co-relation queries the response was YES. [2024-11-22 13:49:08,687 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. [2024-11-22 13:49:08,690 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 77 selfloop transitions, 26 changer transitions 3/127 dead transitions. [2024-11-22 13:49:08,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 127 transitions, 1631 flow [2024-11-22 13:49:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-22 13:49:08,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-11-22 13:49:08,692 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 1371 flow. Second operand 5 states and 60 transitions. [2024-11-22 13:49:08,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 127 transitions, 1631 flow [2024-11-22 13:49:08,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 1493 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-22 13:49:08,702 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 1267 flow [2024-11-22 13:49:08,702 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} [2024-11-22 13:49:08,702 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 68 predicate places. [2024-11-22 13:49:08,702 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 1267 flow [2024-11-22 13:49:08,703 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) [2024-11-22 13:49:08,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:08,703 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] [2024-11-22 13:49:08,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:49:08,703 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:08,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash -113268525, now seen corresponding path program 1 times [2024-11-22 13:49:08,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:08,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179982190] [2024-11-22 13:49:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:08,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:49:08,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:08,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179982190] [2024-11-22 13:49:08,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179982190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:08,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:08,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:49:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269031274] [2024-11-22 13:49:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:08,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:49:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:49:08,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:49:08,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-22 13:49:08,779 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) [2024-11-22 13:49:08,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:08,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-22 13:49:08,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:08,862 INFO L124 PetriNetUnfolderBase]: 360/697 cut-off events. [2024-11-22 13:49:08,863 INFO L125 PetriNetUnfolderBase]: For 4966/4984 co-relation queries the response was YES. [2024-11-22 13:49:08,864 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. [2024-11-22 13:49:08,867 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 77 selfloop transitions, 2 changer transitions 11/125 dead transitions. [2024-11-22 13:49:08,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 125 transitions, 1592 flow [2024-11-22 13:49:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:49:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:49:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2024-11-22 13:49:08,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-11-22 13:49:08,868 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 1267 flow. Second operand 4 states and 50 transitions. [2024-11-22 13:49:08,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 125 transitions, 1592 flow [2024-11-22 13:49:08,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 1488 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-22 13:49:08,877 INFO L231 Difference]: Finished difference. Result has 92 places, 114 transitions, 1192 flow [2024-11-22 13:49:08,877 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} [2024-11-22 13:49:08,878 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-11-22 13:49:08,878 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 114 transitions, 1192 flow [2024-11-22 13:49:08,878 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) [2024-11-22 13:49:08,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:08,878 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] [2024-11-22 13:49:08,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:49:08,879 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:08,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1613481059, now seen corresponding path program 1 times [2024-11-22 13:49:08,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:08,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093321894] [2024-11-22 13:49:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:08,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:09,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:09,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093321894] [2024-11-22 13:49:09,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093321894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:09,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111286060] [2024-11-22 13:49:09,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:09,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:09,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:09,102 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) [2024-11-22 13:49:09,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:49:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:09,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:49:09,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:49:09,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:09,255 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 [2024-11-22 13:49:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:49:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111286060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:09,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-22 13:49:09,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398148977] [2024-11-22 13:49:09,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:09,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:49:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:49:09,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:49:09,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-22 13:49:09,296 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) [2024-11-22 13:49:09,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:09,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-22 13:49:09,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:09,590 INFO L124 PetriNetUnfolderBase]: 1021/1875 cut-off events. [2024-11-22 13:49:09,590 INFO L125 PetriNetUnfolderBase]: For 9772/9870 co-relation queries the response was YES. [2024-11-22 13:49:09,595 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. [2024-11-22 13:49:09,604 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 253 selfloop transitions, 14 changer transitions 11/313 dead transitions. [2024-11-22 13:49:09,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 313 transitions, 3800 flow [2024-11-22 13:49:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:49:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:49:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-11-22 13:49:09,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5341880341880342 [2024-11-22 13:49:09,606 INFO L175 Difference]: Start difference. First operand has 92 places, 114 transitions, 1192 flow. Second operand 9 states and 125 transitions. [2024-11-22 13:49:09,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 313 transitions, 3800 flow [2024-11-22 13:49:09,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 313 transitions, 3784 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-22 13:49:09,622 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1301 flow [2024-11-22 13:49:09,623 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} [2024-11-22 13:49:09,623 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2024-11-22 13:49:09,623 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1301 flow [2024-11-22 13:49:09,623 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) [2024-11-22 13:49:09,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:09,624 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] [2024-11-22 13:49:09,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:49:09,827 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 [2024-11-22 13:49:09,828 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:09,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:09,828 INFO L85 PathProgramCache]: Analyzing trace with hash -46567511, now seen corresponding path program 2 times [2024-11-22 13:49:09,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932352391] [2024-11-22 13:49:09,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:09,850 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:09,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:09,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932352391] [2024-11-22 13:49:09,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932352391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404054051] [2024-11-22 13:49:09,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:09,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:09,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:09,966 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) [2024-11-22 13:49:09,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:49:10,032 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:10,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:10,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:49:10,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:10,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:10,110 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 [2024-11-22 13:49:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:10,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404054051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:10,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:10,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-22 13:49:10,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818351593] [2024-11-22 13:49:10,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:10,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:49:10,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:10,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:49:10,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:49:10,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-22 13:49:10,149 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) [2024-11-22 13:49:10,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:10,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-22 13:49:10,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:10,697 INFO L124 PetriNetUnfolderBase]: 2496/4592 cut-off events. [2024-11-22 13:49:10,697 INFO L125 PetriNetUnfolderBase]: For 24830/25112 co-relation queries the response was YES. [2024-11-22 13:49:10,713 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. [2024-11-22 13:49:10,732 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 254 selfloop transitions, 23 changer transitions 21/333 dead transitions. [2024-11-22 13:49:10,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 333 transitions, 4017 flow [2024-11-22 13:49:10,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:49:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:49:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-11-22 13:49:10,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-22 13:49:10,733 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1301 flow. Second operand 8 states and 114 transitions. [2024-11-22 13:49:10,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 333 transitions, 4017 flow [2024-11-22 13:49:10,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 333 transitions, 3969 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:10,781 INFO L231 Difference]: Finished difference. Result has 112 places, 145 transitions, 1489 flow [2024-11-22 13:49:10,782 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} [2024-11-22 13:49:10,782 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 86 predicate places. [2024-11-22 13:49:10,782 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 145 transitions, 1489 flow [2024-11-22 13:49:10,782 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) [2024-11-22 13:49:10,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:10,782 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] [2024-11-22 13:49:10,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 13:49:10,983 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 [2024-11-22 13:49:10,983 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:10,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1039400364, now seen corresponding path program 3 times [2024-11-22 13:49:10,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:10,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789049483] [2024-11-22 13:49:10,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:10,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:11,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:49:11,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:49:11,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789049483] [2024-11-22 13:49:11,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789049483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089920812] [2024-11-22 13:49:11,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:11,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:11,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:11,323 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) [2024-11-22 13:49:11,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:49:11,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:49:11,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:11,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 13:49:11,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:11,439 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 [2024-11-22 13:49:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:49:11,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:11,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:11,970 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 [2024-11-22 13:49:12,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:12,024 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 [2024-11-22 13:49:12,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:12,143 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 [2024-11-22 13:49:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:49:15,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089920812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:15,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:15,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-22 13:49:15,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001741996] [2024-11-22 13:49:15,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:15,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:49:15,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:15,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:49:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:49:15,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-11-22 13:49:15,292 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) [2024-11-22 13:49:15,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:15,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-11-22 13:49:15,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:15,881 INFO L124 PetriNetUnfolderBase]: 2191/4074 cut-off events. [2024-11-22 13:49:15,882 INFO L125 PetriNetUnfolderBase]: For 22580/22784 co-relation queries the response was YES. [2024-11-22 13:49:15,896 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. [2024-11-22 13:49:15,909 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 111 selfloop transitions, 11 changer transitions 61/218 dead transitions. [2024-11-22 13:49:15,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 218 transitions, 2647 flow [2024-11-22 13:49:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:49:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:49:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-22 13:49:15,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-11-22 13:49:15,911 INFO L175 Difference]: Start difference. First operand has 112 places, 145 transitions, 1489 flow. Second operand 7 states and 86 transitions. [2024-11-22 13:49:15,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 218 transitions, 2647 flow [2024-11-22 13:49:15,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 218 transitions, 2632 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:15,953 INFO L231 Difference]: Finished difference. Result has 118 places, 142 transitions, 1469 flow [2024-11-22 13:49:15,954 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} [2024-11-22 13:49:15,954 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-22 13:49:15,954 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 142 transitions, 1469 flow [2024-11-22 13:49:15,954 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) [2024-11-22 13:49:15,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:15,954 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] [2024-11-22 13:49:15,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 13:49:16,155 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 [2024-11-22 13:49:16,155 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:16,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:16,156 INFO L85 PathProgramCache]: Analyzing trace with hash -73361006, now seen corresponding path program 4 times [2024-11-22 13:49:16,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:16,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011739664] [2024-11-22 13:49:16,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:16,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:16,174 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:16,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011739664] [2024-11-22 13:49:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011739664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609137740] [2024-11-22 13:49:16,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:16,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:16,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:16,218 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) [2024-11-22 13:49:16,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:49:16,283 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:16,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:16,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:16,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:16,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:16,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609137740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:16,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:16,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-11-22 13:49:16,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979452356] [2024-11-22 13:49:16,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:16,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:49:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:16,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:49:16,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:49:16,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:16,355 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) [2024-11-22 13:49:16,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:16,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:16,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:16,991 INFO L124 PetriNetUnfolderBase]: 3575/5846 cut-off events. [2024-11-22 13:49:16,991 INFO L125 PetriNetUnfolderBase]: For 24866/24866 co-relation queries the response was YES. [2024-11-22 13:49:17,007 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. [2024-11-22 13:49:17,026 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 281 selfloop transitions, 52 changer transitions 8/342 dead transitions. [2024-11-22 13:49:17,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 342 transitions, 3683 flow [2024-11-22 13:49:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:49:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:49:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-11-22 13:49:17,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44755244755244755 [2024-11-22 13:49:17,028 INFO L175 Difference]: Start difference. First operand has 118 places, 142 transitions, 1469 flow. Second operand 11 states and 128 transitions. [2024-11-22 13:49:17,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 342 transitions, 3683 flow [2024-11-22 13:49:17,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 342 transitions, 3589 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-11-22 13:49:17,079 INFO L231 Difference]: Finished difference. Result has 125 places, 168 transitions, 1838 flow [2024-11-22 13:49:17,079 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} [2024-11-22 13:49:17,079 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2024-11-22 13:49:17,079 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 168 transitions, 1838 flow [2024-11-22 13:49:17,079 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) [2024-11-22 13:49:17,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:17,080 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] [2024-11-22 13:49:17,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 13:49:17,283 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 [2024-11-22 13:49:17,284 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:17,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1595445062, now seen corresponding path program 5 times [2024-11-22 13:49:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440587068] [2024-11-22 13:49:17,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:17,306 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:49:17,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:17,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:17,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440587068] [2024-11-22 13:49:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440587068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:17,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469064592] [2024-11-22 13:49:17,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:17,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:17,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:17,363 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) [2024-11-22 13:49:17,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:49:17,457 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:49:17,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:17,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:17,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:17,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:17,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469064592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:17,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:17,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-22 13:49:17,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301129914] [2024-11-22 13:49:17,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:17,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:49:17,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:17,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:49:17,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:49:17,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:17,546 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) [2024-11-22 13:49:17,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:17,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:17,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:18,485 INFO L124 PetriNetUnfolderBase]: 5221/8428 cut-off events. [2024-11-22 13:49:18,486 INFO L125 PetriNetUnfolderBase]: For 45202/45202 co-relation queries the response was YES. [2024-11-22 13:49:18,508 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. [2024-11-22 13:49:18,532 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 335 selfloop transitions, 98 changer transitions 6/440 dead transitions. [2024-11-22 13:49:18,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 440 transitions, 4776 flow [2024-11-22 13:49:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:49:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 13:49:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 210 transitions. [2024-11-22 13:49:18,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-11-22 13:49:18,535 INFO L175 Difference]: Start difference. First operand has 125 places, 168 transitions, 1838 flow. Second operand 20 states and 210 transitions. [2024-11-22 13:49:18,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 440 transitions, 4776 flow [2024-11-22 13:49:18,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 440 transitions, 4596 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-22 13:49:18,627 INFO L231 Difference]: Finished difference. Result has 153 places, 214 transitions, 2553 flow [2024-11-22 13:49:18,627 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} [2024-11-22 13:49:18,628 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2024-11-22 13:49:18,628 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 214 transitions, 2553 flow [2024-11-22 13:49:18,628 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) [2024-11-22 13:49:18,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:18,628 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] [2024-11-22 13:49:18,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 13:49:18,829 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 [2024-11-22 13:49:18,830 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:18,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1971210578, now seen corresponding path program 6 times [2024-11-22 13:49:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572902793] [2024-11-22 13:49:18,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:49:18,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:18,847 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:49:18,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:18,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:18,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572902793] [2024-11-22 13:49:18,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572902793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:18,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268694731] [2024-11-22 13:49:18,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:49:18,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:18,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:18,904 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) [2024-11-22 13:49:18,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:49:18,978 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:49:18,978 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:18,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:18,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:19,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:49:19,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268694731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:19,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:19,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2024-11-22 13:49:19,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545160488] [2024-11-22 13:49:19,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:19,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:49:19,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:49:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:49:19,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:19,071 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) [2024-11-22 13:49:19,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:19,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:19,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:20,400 INFO L124 PetriNetUnfolderBase]: 5177/8393 cut-off events. [2024-11-22 13:49:20,401 INFO L125 PetriNetUnfolderBase]: For 67340/67340 co-relation queries the response was YES. [2024-11-22 13:49:20,425 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. [2024-11-22 13:49:20,533 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 319 selfloop transitions, 133 changer transitions 5/458 dead transitions. [2024-11-22 13:49:20,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 458 transitions, 5416 flow [2024-11-22 13:49:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:49:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 13:49:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 204 transitions. [2024-11-22 13:49:20,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-11-22 13:49:20,536 INFO L175 Difference]: Start difference. First operand has 153 places, 214 transitions, 2553 flow. Second operand 20 states and 204 transitions. [2024-11-22 13:49:20,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 458 transitions, 5416 flow [2024-11-22 13:49:20,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 458 transitions, 5259 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-11-22 13:49:20,695 INFO L231 Difference]: Finished difference. Result has 173 places, 237 transitions, 3123 flow [2024-11-22 13:49:20,695 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} [2024-11-22 13:49:20,695 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 147 predicate places. [2024-11-22 13:49:20,695 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 237 transitions, 3123 flow [2024-11-22 13:49:20,695 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) [2024-11-22 13:49:20,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:20,696 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] [2024-11-22 13:49:20,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 13:49:20,896 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 [2024-11-22 13:49:20,896 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:20,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash -866982130, now seen corresponding path program 7 times [2024-11-22 13:49:20,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:20,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217000893] [2024-11-22 13:49:20,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:49:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:20,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:20,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217000893] [2024-11-22 13:49:20,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217000893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:20,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677670671] [2024-11-22 13:49:20,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:49:20,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:20,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:20,975 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) [2024-11-22 13:49:20,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:49:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:21,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:21,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:21,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:21,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677670671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:21,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:21,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-22 13:49:21,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526606107] [2024-11-22 13:49:21,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:21,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:49:21,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:49:21,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:49:21,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:21,157 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) [2024-11-22 13:49:21,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:21,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:21,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:22,579 INFO L124 PetriNetUnfolderBase]: 6068/9833 cut-off events. [2024-11-22 13:49:22,579 INFO L125 PetriNetUnfolderBase]: For 105488/105488 co-relation queries the response was YES. [2024-11-22 13:49:22,626 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. [2024-11-22 13:49:22,667 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 342 selfloop transitions, 92 changer transitions 18/453 dead transitions. [2024-11-22 13:49:22,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 453 transitions, 5819 flow [2024-11-22 13:49:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:49:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:49:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 151 transitions. [2024-11-22 13:49:22,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41483516483516486 [2024-11-22 13:49:22,668 INFO L175 Difference]: Start difference. First operand has 173 places, 237 transitions, 3123 flow. Second operand 14 states and 151 transitions. [2024-11-22 13:49:22,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 453 transitions, 5819 flow [2024-11-22 13:49:23,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 453 transitions, 5565 flow, removed 34 selfloop flow, removed 16 redundant places. [2024-11-22 13:49:23,054 INFO L231 Difference]: Finished difference. Result has 175 places, 251 transitions, 3353 flow [2024-11-22 13:49:23,054 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} [2024-11-22 13:49:23,054 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2024-11-22 13:49:23,054 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 251 transitions, 3353 flow [2024-11-22 13:49:23,055 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) [2024-11-22 13:49:23,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:23,055 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] [2024-11-22 13:49:23,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 13:49:23,255 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 [2024-11-22 13:49:23,256 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:23,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1875638076, now seen corresponding path program 8 times [2024-11-22 13:49:23,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:23,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563563204] [2024-11-22 13:49:23,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:23,270 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:23,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:23,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563563204] [2024-11-22 13:49:23,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563563204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486752219] [2024-11-22 13:49:23,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:23,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:23,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:23,342 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) [2024-11-22 13:49:23,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 13:49:23,521 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:23,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:23,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:23,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:23,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:49:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486752219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:23,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-22 13:49:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705187894] [2024-11-22 13:49:23,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:23,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:49:23,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:49:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:49:23,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:23,602 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) [2024-11-22 13:49:23,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:23,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:23,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:25,295 INFO L124 PetriNetUnfolderBase]: 7593/12161 cut-off events. [2024-11-22 13:49:25,295 INFO L125 PetriNetUnfolderBase]: For 133791/133791 co-relation queries the response was YES. [2024-11-22 13:49:25,341 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. [2024-11-22 13:49:25,379 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 372 selfloop transitions, 112 changer transitions 10/495 dead transitions. [2024-11-22 13:49:25,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 495 transitions, 6383 flow [2024-11-22 13:49:25,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:49:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:49:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-11-22 13:49:25,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-11-22 13:49:25,380 INFO L175 Difference]: Start difference. First operand has 175 places, 251 transitions, 3353 flow. Second operand 14 states and 160 transitions. [2024-11-22 13:49:25,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 495 transitions, 6383 flow [2024-11-22 13:49:25,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 495 transitions, 6322 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-22 13:49:25,825 INFO L231 Difference]: Finished difference. Result has 185 places, 283 transitions, 3969 flow [2024-11-22 13:49:25,825 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} [2024-11-22 13:49:25,826 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 159 predicate places. [2024-11-22 13:49:25,826 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 283 transitions, 3969 flow [2024-11-22 13:49:25,826 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) [2024-11-22 13:49:25,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:25,826 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] [2024-11-22 13:49:25,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 13:49:26,026 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 [2024-11-22 13:49:26,027 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:26,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:26,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1969297986, now seen corresponding path program 9 times [2024-11-22 13:49:26,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:26,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038152643] [2024-11-22 13:49:26,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:26,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:26,051 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 13:49:26,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038152643] [2024-11-22 13:49:26,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038152643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575356686] [2024-11-22 13:49:26,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:26,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:26,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:26,112 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) [2024-11-22 13:49:26,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 13:49:26,192 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 13:49:26,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:26,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:26,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:26,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:49:26,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575356686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:26,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:26,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-22 13:49:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185233531] [2024-11-22 13:49:26,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:26,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:49:26,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:26,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:49:26,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:49:26,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:26,289 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) [2024-11-22 13:49:26,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:26,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:26,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:28,809 INFO L124 PetriNetUnfolderBase]: 9121/14482 cut-off events. [2024-11-22 13:49:28,809 INFO L125 PetriNetUnfolderBase]: For 195212/195212 co-relation queries the response was YES. [2024-11-22 13:49:28,960 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. [2024-11-22 13:49:29,024 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 373 selfloop transitions, 238 changer transitions 4/616 dead transitions. [2024-11-22 13:49:29,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 616 transitions, 8183 flow [2024-11-22 13:49:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 13:49:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-22 13:49:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 254 transitions. [2024-11-22 13:49:29,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3757396449704142 [2024-11-22 13:49:29,026 INFO L175 Difference]: Start difference. First operand has 185 places, 283 transitions, 3969 flow. Second operand 26 states and 254 transitions. [2024-11-22 13:49:29,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 616 transitions, 8183 flow [2024-11-22 13:49:29,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 616 transitions, 7949 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-11-22 13:49:29,862 INFO L231 Difference]: Finished difference. Result has 218 places, 342 transitions, 5349 flow [2024-11-22 13:49:29,862 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} [2024-11-22 13:49:29,863 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 192 predicate places. [2024-11-22 13:49:29,863 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 342 transitions, 5349 flow [2024-11-22 13:49:29,863 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) [2024-11-22 13:49:29,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:29,863 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] [2024-11-22 13:49:29,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 13:49:30,064 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 [2024-11-22 13:49:30,064 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:30,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1877048596, now seen corresponding path program 10 times [2024-11-22 13:49:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:30,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950732130] [2024-11-22 13:49:30,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:30,082 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:30,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:30,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950732130] [2024-11-22 13:49:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950732130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008208917] [2024-11-22 13:49:30,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:30,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:30,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:30,155 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) [2024-11-22 13:49:30,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 13:49:30,226 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:30,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:30,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:30,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:30,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:30,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008208917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:30,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:30,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-22 13:49:30,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128817141] [2024-11-22 13:49:30,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:30,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:49:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:49:30,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:49:30,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:30,321 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) [2024-11-22 13:49:30,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:30,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:30,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:32,754 INFO L124 PetriNetUnfolderBase]: 9681/15455 cut-off events. [2024-11-22 13:49:32,754 INFO L125 PetriNetUnfolderBase]: For 307829/307829 co-relation queries the response was YES. [2024-11-22 13:49:32,832 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. [2024-11-22 13:49:32,888 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 365 selfloop transitions, 234 changer transitions 7/607 dead transitions. [2024-11-22 13:49:32,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 607 transitions, 9106 flow [2024-11-22 13:49:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 13:49:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-22 13:49:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 203 transitions. [2024-11-22 13:49:32,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-11-22 13:49:32,890 INFO L175 Difference]: Start difference. First operand has 218 places, 342 transitions, 5349 flow. Second operand 21 states and 203 transitions. [2024-11-22 13:49:32,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 607 transitions, 9106 flow [2024-11-22 13:49:34,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 607 transitions, 8776 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-11-22 13:49:34,615 INFO L231 Difference]: Finished difference. Result has 240 places, 372 transitions, 6363 flow [2024-11-22 13:49:34,616 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} [2024-11-22 13:49:34,616 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 214 predicate places. [2024-11-22 13:49:34,616 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 372 transitions, 6363 flow [2024-11-22 13:49:34,616 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) [2024-11-22 13:49:34,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:34,616 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] [2024-11-22 13:49:34,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 13:49:34,817 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 [2024-11-22 13:49:34,817 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:34,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:34,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1893143792, now seen corresponding path program 11 times [2024-11-22 13:49:34,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:34,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387966108] [2024-11-22 13:49:34,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:34,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:34,837 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:49:34,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:34,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387966108] [2024-11-22 13:49:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387966108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484533294] [2024-11-22 13:49:34,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:34,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:34,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:34,964 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) [2024-11-22 13:49:34,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 13:49:35,043 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:49:35,044 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:35,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:35,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:35,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484533294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:35,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-22 13:49:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6512762] [2024-11-22 13:49:35,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:35,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:49:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:49:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:49:35,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:35,104 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) [2024-11-22 13:49:35,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:35,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:35,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:37,886 INFO L124 PetriNetUnfolderBase]: 10629/17000 cut-off events. [2024-11-22 13:49:37,886 INFO L125 PetriNetUnfolderBase]: For 417842/417842 co-relation queries the response was YES. [2024-11-22 13:49:37,992 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. [2024-11-22 13:49:38,057 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 398 selfloop transitions, 154 changer transitions 14/567 dead transitions. [2024-11-22 13:49:38,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 567 transitions, 9290 flow [2024-11-22 13:49:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:49:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:49:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-11-22 13:49:38,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40236686390532544 [2024-11-22 13:49:38,058 INFO L175 Difference]: Start difference. First operand has 240 places, 372 transitions, 6363 flow. Second operand 13 states and 136 transitions. [2024-11-22 13:49:38,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 567 transitions, 9290 flow [2024-11-22 13:49:40,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 567 transitions, 9146 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-11-22 13:49:40,760 INFO L231 Difference]: Finished difference. Result has 253 places, 389 transitions, 6898 flow [2024-11-22 13:49:40,760 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} [2024-11-22 13:49:40,760 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-11-22 13:49:40,760 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 389 transitions, 6898 flow [2024-11-22 13:49:40,761 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) [2024-11-22 13:49:40,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:40,761 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] [2024-11-22 13:49:40,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 13:49:40,961 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 [2024-11-22 13:49:40,961 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:40,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash -169344886, now seen corresponding path program 12 times [2024-11-22 13:49:40,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:40,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290134202] [2024-11-22 13:49:40,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:49:40,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:40,982 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:49:40,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:41,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:41,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290134202] [2024-11-22 13:49:41,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290134202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:41,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269014445] [2024-11-22 13:49:41,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:49:41,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:41,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:41,105 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) [2024-11-22 13:49:41,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 13:49:41,186 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:49:41,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:41,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:41,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:41,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269014445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:41,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:41,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 13:49:41,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623294198] [2024-11-22 13:49:41,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:41,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:49:41,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:41,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:49:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:49:41,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:41,260 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) [2024-11-22 13:49:41,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:41,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:41,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:44,915 INFO L124 PetriNetUnfolderBase]: 12652/20243 cut-off events. [2024-11-22 13:49:44,916 INFO L125 PetriNetUnfolderBase]: For 534584/534584 co-relation queries the response was YES. [2024-11-22 13:49:45,054 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. [2024-11-22 13:49:45,163 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 299 selfloop transitions, 354 changer transitions 12/666 dead transitions. [2024-11-22 13:49:45,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 666 transitions, 11898 flow [2024-11-22 13:49:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:49:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:49:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 145 transitions. [2024-11-22 13:49:45,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-11-22 13:49:45,164 INFO L175 Difference]: Start difference. First operand has 253 places, 389 transitions, 6898 flow. Second operand 15 states and 145 transitions. [2024-11-22 13:49:45,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 666 transitions, 11898 flow [2024-11-22 13:49:48,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 666 transitions, 11616 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-22 13:49:48,690 INFO L231 Difference]: Finished difference. Result has 270 places, 499 transitions, 10023 flow [2024-11-22 13:49:48,690 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} [2024-11-22 13:49:48,690 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 244 predicate places. [2024-11-22 13:49:48,691 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 499 transitions, 10023 flow [2024-11-22 13:49:48,691 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) [2024-11-22 13:49:48,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:48,691 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] [2024-11-22 13:49:48,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 13:49:48,891 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 [2024-11-22 13:49:48,891 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:48,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2100107518, now seen corresponding path program 13 times [2024-11-22 13:49:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:48,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455107306] [2024-11-22 13:49:48,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:49:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455107306] [2024-11-22 13:49:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455107306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358330858] [2024-11-22 13:49:48,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:49:48,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:48,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:48,963 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) [2024-11-22 13:49:48,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 13:49:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:49,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:49,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:49,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:49,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358330858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:49,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:49,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-22 13:49:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833988781] [2024-11-22 13:49:49,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:49,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:49:49,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:49:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:49:49,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:49:49,129 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) [2024-11-22 13:49:49,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:49,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:49:49,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:53,356 INFO L124 PetriNetUnfolderBase]: 13390/21433 cut-off events. [2024-11-22 13:49:53,356 INFO L125 PetriNetUnfolderBase]: For 699252/699252 co-relation queries the response was YES. [2024-11-22 13:49:53,499 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. [2024-11-22 13:49:53,613 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 468 selfloop transitions, 234 changer transitions 9/712 dead transitions. [2024-11-22 13:49:53,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 712 transitions, 13643 flow [2024-11-22 13:49:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:49:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:49:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-11-22 13:49:53,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4408284023668639 [2024-11-22 13:49:53,614 INFO L175 Difference]: Start difference. First operand has 270 places, 499 transitions, 10023 flow. Second operand 13 states and 149 transitions. [2024-11-22 13:49:53,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 712 transitions, 13643 flow [2024-11-22 13:49:59,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 712 transitions, 13492 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:59,782 INFO L231 Difference]: Finished difference. Result has 286 places, 515 transitions, 10850 flow [2024-11-22 13:49:59,782 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} [2024-11-22 13:49:59,782 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2024-11-22 13:49:59,783 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 515 transitions, 10850 flow [2024-11-22 13:49:59,783 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) [2024-11-22 13:49:59,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:59,783 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] [2024-11-22 13:49:59,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 13:49:59,983 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 [2024-11-22 13:49:59,983 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:59,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:59,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1251032382, now seen corresponding path program 14 times [2024-11-22 13:49:59,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:59,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134739593] [2024-11-22 13:49:59,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:59,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:59,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:59,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:50:00,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:50:00,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134739593] [2024-11-22 13:50:00,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134739593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:50:00,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431952776] [2024-11-22 13:50:00,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:50:00,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:50:00,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:50:00,045 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) [2024-11-22 13:50:00,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 13:50:00,124 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:50:00,125 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:00,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:50:00,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:50:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:50:00,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:50:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:50:00,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431952776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:50:00,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:50:00,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-22 13:50:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012887372] [2024-11-22 13:50:00,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:50:00,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:50:00,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:50:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:50:00,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:50:00,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:50:00,199 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) [2024-11-22 13:50:00,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:50:00,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:50:00,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:50:05,522 INFO L124 PetriNetUnfolderBase]: 15384/24722 cut-off events. [2024-11-22 13:50:05,523 INFO L125 PetriNetUnfolderBase]: For 851342/851342 co-relation queries the response was YES. [2024-11-22 13:50:05,676 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. [2024-11-22 13:50:05,768 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 348 selfloop transitions, 436 changer transitions 7/792 dead transitions. [2024-11-22 13:50:05,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 792 transitions, 16394 flow [2024-11-22 13:50:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 13:50:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 13:50:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 162 transitions. [2024-11-22 13:50:05,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-11-22 13:50:05,769 INFO L175 Difference]: Start difference. First operand has 286 places, 515 transitions, 10850 flow. Second operand 16 states and 162 transitions. [2024-11-22 13:50:05,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 792 transitions, 16394 flow [2024-11-22 13:50:14,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 792 transitions, 16067 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-22 13:50:14,564 INFO L231 Difference]: Finished difference. Result has 302 places, 610 transitions, 14487 flow [2024-11-22 13:50:14,565 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} [2024-11-22 13:50:14,565 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 276 predicate places. [2024-11-22 13:50:14,565 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 610 transitions, 14487 flow [2024-11-22 13:50:14,565 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) [2024-11-22 13:50:14,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:50:14,565 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] [2024-11-22 13:50:14,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 13:50:14,766 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 [2024-11-22 13:50:14,766 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:50:14,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:50:14,766 INFO L85 PathProgramCache]: Analyzing trace with hash -74044674, now seen corresponding path program 15 times [2024-11-22 13:50:14,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:50:14,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773781663] [2024-11-22 13:50:14,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:50:14,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:50:14,790 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:50:14,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:50:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:50:14,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773781663] [2024-11-22 13:50:14,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773781663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:50:14,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266191748] [2024-11-22 13:50:14,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:50:14,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:50:14,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:50:14,846 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) [2024-11-22 13:50:14,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 13:50:14,931 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:50:14,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:14,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:50:14,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:50:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:50:14,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:50:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:50:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266191748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:50:14,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:50:14,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-22 13:50:14,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555765399] [2024-11-22 13:50:14,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:50:14,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:50:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:50:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:50:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:50:14,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-22 13:50:14,996 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) [2024-11-22 13:50:14,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:50:14,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-22 13:50:14,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand