./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.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 cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:30:01,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:30:01,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:30:01,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:30:01,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:30:01,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:30:01,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:30:01,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:30:01,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:30:01,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:30:01,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:30:01,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:30:01,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:30:01,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:30:01,663 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:30:01,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:30:01,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:30:01,664 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:30:01,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:30:01,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:30:01,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:30:01,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:30:01,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:30:01,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:30:01,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:30:01,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:30:01,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:30:01,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:30:01,669 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:30:01,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:30:01,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:30:01,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:30:01,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:30:01,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:30:01,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:30:01,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:30:01,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:30:01,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:30:01,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:30:01,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:30:01,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:30:01,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:30:01,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 [2024-11-16 19:30:01,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:30:01,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:30:01,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:30:01,883 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:30:01,883 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:30:01,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-11-16 19:30:03,098 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:30:03,234 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:30:03,235 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-11-16 19:30:03,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f489d9b04/02916823063245d7bb6aa69a15566fcb/FLAGa61d92c48 [2024-11-16 19:30:03,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f489d9b04/02916823063245d7bb6aa69a15566fcb [2024-11-16 19:30:03,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:30:03,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:30:03,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:30:03,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:30:03,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:30:03,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db57f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03, skipping insertion in model container [2024-11-16 19:30:03,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:30:03,446 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-more-array-sum-alt.wvr.c[2368,2381] [2024-11-16 19:30:03,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:30:03,461 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:30:03,475 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-more-array-sum-alt.wvr.c[2368,2381] [2024-11-16 19:30:03,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:30:03,493 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:30:03,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03 WrapperNode [2024-11-16 19:30:03,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:30:03,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:30:03,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:30:03,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:30:03,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,523 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 180 [2024-11-16 19:30:03,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:30:03,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:30:03,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:30:03,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:30:03,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,544 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-16 19:30:03,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,550 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,550 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:30:03,559 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:30:03,559 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:30:03,559 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:30:03,559 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (1/1) ... [2024-11-16 19:30:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:30:03,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:03,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:30:03,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:30:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:30:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:30:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:30:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:30:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:30:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:30:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:30:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:30:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:30:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:30:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:30:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:30:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:30:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:30:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:30:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:30:03,631 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:30:03,718 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:30:03,720 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:30:03,925 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:30:03,925 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:30:04,102 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:30:04,103 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:30:04,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:30:04 BoogieIcfgContainer [2024-11-16 19:30:04,103 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:30:04,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:30:04,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:30:04,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:30:04,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:30:03" (1/3) ... [2024-11-16 19:30:04,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@907753a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:30:04, skipping insertion in model container [2024-11-16 19:30:04,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:03" (2/3) ... [2024-11-16 19:30:04,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@907753a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:30:04, skipping insertion in model container [2024-11-16 19:30:04,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:30:04" (3/3) ... [2024-11-16 19:30:04,113 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-11-16 19:30:04,136 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:30:04,136 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:30:04,137 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:30:04,179 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:30:04,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 107 flow [2024-11-16 19:30:04,232 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2024-11-16 19:30:04,232 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:30:04,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 8/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-16 19:30:04,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 107 flow [2024-11-16 19:30:04,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 39 transitions, 96 flow [2024-11-16 19:30:04,249 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:30:04,257 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;@30ed82a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:30:04,258 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:30:04,270 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:30:04,271 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-11-16 19:30:04,271 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:30:04,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:04,272 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] [2024-11-16 19:30:04,272 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:04,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:04,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1858595576, now seen corresponding path program 1 times [2024-11-16 19:30:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:04,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162504571] [2024-11-16 19:30:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:04,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162504571] [2024-11-16 19:30:04,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162504571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:04,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:04,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:30:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916871698] [2024-11-16 19:30:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:04,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:30:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:30:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:30:04,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-16 19:30:04,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:04,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:04,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-16 19:30:04,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:04,636 INFO L124 PetriNetUnfolderBase]: 498/779 cut-off events. [2024-11-16 19:30:04,636 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-16 19:30:04,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 779 events. 498/779 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3433 event pairs, 358 based on Foata normal form. 140/889 useless extension candidates. Maximal degree in co-relation 1348. Up to 719 conditions per place. [2024-11-16 19:30:04,645 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 26 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2024-11-16 19:30:04,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 140 flow [2024-11-16 19:30:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:30:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:30:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-16 19:30:04,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-16 19:30:04,655 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 96 flow. Second operand 2 states and 54 transitions. [2024-11-16 19:30:04,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 140 flow [2024-11-16 19:30:04,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:30:04,659 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 76 flow [2024-11-16 19:30:04,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-11-16 19:30:04,663 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2024-11-16 19:30:04,663 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 76 flow [2024-11-16 19:30:04,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:04,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:04,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:04,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:30:04,664 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:04,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -639000170, now seen corresponding path program 1 times [2024-11-16 19:30:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986676975] [2024-11-16 19:30:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:04,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:04,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986676975] [2024-11-16 19:30:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986676975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:04,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:04,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:30:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759165874] [2024-11-16 19:30:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:04,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:30:04,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:30:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:30:04,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-16 19:30:04,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:04,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:04,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-16 19:30:04,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:05,007 INFO L124 PetriNetUnfolderBase]: 817/1347 cut-off events. [2024-11-16 19:30:05,008 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-16 19:30:05,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1347 events. 817/1347 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7153 event pairs, 226 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 2557. Up to 803 conditions per place. [2024-11-16 19:30:05,015 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 40 selfloop transitions, 4 changer transitions 1/54 dead transitions. [2024-11-16 19:30:05,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 209 flow [2024-11-16 19:30:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:30:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:30:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-16 19:30:05,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6356589147286822 [2024-11-16 19:30:05,017 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 76 flow. Second operand 3 states and 82 transitions. [2024-11-16 19:30:05,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 209 flow [2024-11-16 19:30:05,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:30:05,019 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 102 flow [2024-11-16 19:30:05,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2024-11-16 19:30:05,020 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2024-11-16 19:30:05,020 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 102 flow [2024-11-16 19:30:05,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:05,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:05,020 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:05,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:30:05,021 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:05,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1585625931, now seen corresponding path program 1 times [2024-11-16 19:30:05,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:05,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415369686] [2024-11-16 19:30:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:05,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:05,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:05,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415369686] [2024-11-16 19:30:05,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415369686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:05,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:05,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:30:05,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564619147] [2024-11-16 19:30:05,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:05,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:30:05,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:05,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:30:05,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:30:05,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-16 19:30:05,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:05,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:05,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-16 19:30:05,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:05,445 INFO L124 PetriNetUnfolderBase]: 1511/2628 cut-off events. [2024-11-16 19:30:05,446 INFO L125 PetriNetUnfolderBase]: For 412/412 co-relation queries the response was YES. [2024-11-16 19:30:05,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 2628 events. 1511/2628 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16839 event pairs, 946 based on Foata normal form. 98/2672 useless extension candidates. Maximal degree in co-relation 5465. Up to 1180 conditions per place. [2024-11-16 19:30:05,457 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 68 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2024-11-16 19:30:05,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 82 transitions, 368 flow [2024-11-16 19:30:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:30:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:30:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-11-16 19:30:05,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403 [2024-11-16 19:30:05,461 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 102 flow. Second operand 6 states and 134 transitions. [2024-11-16 19:30:05,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 82 transitions, 368 flow [2024-11-16 19:30:05,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 82 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:30:05,464 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 144 flow [2024-11-16 19:30:05,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-16 19:30:05,465 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-16 19:30:05,466 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 144 flow [2024-11-16 19:30:05,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:05,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:05,466 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:05,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:30:05,466 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:05,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1645588871, now seen corresponding path program 1 times [2024-11-16 19:30:05,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:05,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180191375] [2024-11-16 19:30:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:05,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:05,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180191375] [2024-11-16 19:30:05,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180191375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278876125] [2024-11-16 19:30:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:05,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:05,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:05,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:30:05,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:30:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:05,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:30:05,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:05,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278876125] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:05,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:30:05,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-16 19:30:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238306743] [2024-11-16 19:30:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:05,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:30:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:30:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:30:05,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:30:05,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:05,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:05,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:30:05,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:06,412 INFO L124 PetriNetUnfolderBase]: 2787/4237 cut-off events. [2024-11-16 19:30:06,412 INFO L125 PetriNetUnfolderBase]: For 2169/2169 co-relation queries the response was YES. [2024-11-16 19:30:06,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10269 conditions, 4237 events. 2787/4237 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24377 event pairs, 1018 based on Foata normal form. 0/3800 useless extension candidates. Maximal degree in co-relation 10260. Up to 1102 conditions per place. [2024-11-16 19:30:06,432 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 143 selfloop transitions, 23 changer transitions 0/172 dead transitions. [2024-11-16 19:30:06,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 172 transitions, 884 flow [2024-11-16 19:30:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:30:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:30:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 259 transitions. [2024-11-16 19:30:06,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.501937984496124 [2024-11-16 19:30:06,436 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 144 flow. Second operand 12 states and 259 transitions. [2024-11-16 19:30:06,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 172 transitions, 884 flow [2024-11-16 19:30:06,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 172 transitions, 882 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:30:06,441 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 293 flow [2024-11-16 19:30:06,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=293, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-16 19:30:06,442 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-11-16 19:30:06,443 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 293 flow [2024-11-16 19:30:06,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:06,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:06,443 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:06,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:30:06,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:06,648 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:06,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:06,649 INFO L85 PathProgramCache]: Analyzing trace with hash 918160263, now seen corresponding path program 2 times [2024-11-16 19:30:06,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:06,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134969377] [2024-11-16 19:30:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:06,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:06,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:06,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134969377] [2024-11-16 19:30:06,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134969377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:06,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500335116] [2024-11-16 19:30:06,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:30:06,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:06,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:06,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:30:06,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:30:06,838 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:30:06,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:06,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:30:06,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:06,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500335116] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:07,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:30:07,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2024-11-16 19:30:07,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032846035] [2024-11-16 19:30:07,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:07,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:30:07,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:30:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:30:07,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:30:07,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:07,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:07,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:30:07,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:07,682 INFO L124 PetriNetUnfolderBase]: 3678/5532 cut-off events. [2024-11-16 19:30:07,682 INFO L125 PetriNetUnfolderBase]: For 7008/7014 co-relation queries the response was YES. [2024-11-16 19:30:07,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16989 conditions, 5532 events. 3678/5532 cut-off events. For 7008/7014 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32713 event pairs, 933 based on Foata normal form. 24/5499 useless extension candidates. Maximal degree in co-relation 16972. Up to 1081 conditions per place. [2024-11-16 19:30:07,708 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 137 selfloop transitions, 56 changer transitions 0/199 dead transitions. [2024-11-16 19:30:07,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 199 transitions, 1275 flow [2024-11-16 19:30:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:30:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:30:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 258 transitions. [2024-11-16 19:30:07,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-16 19:30:07,710 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 293 flow. Second operand 12 states and 258 transitions. [2024-11-16 19:30:07,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 199 transitions, 1275 flow [2024-11-16 19:30:07,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 199 transitions, 1272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:30:07,734 INFO L231 Difference]: Finished difference. Result has 81 places, 105 transitions, 737 flow [2024-11-16 19:30:07,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=737, PETRI_PLACES=81, PETRI_TRANSITIONS=105} [2024-11-16 19:30:07,735 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-11-16 19:30:07,735 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 105 transitions, 737 flow [2024-11-16 19:30:07,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:07,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:07,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:07,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:30:07,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:07,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:07,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:07,941 INFO L85 PathProgramCache]: Analyzing trace with hash -41871689, now seen corresponding path program 3 times [2024-11-16 19:30:07,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:07,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769108373] [2024-11-16 19:30:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:07,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:08,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:08,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769108373] [2024-11-16 19:30:08,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769108373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851595058] [2024-11-16 19:30:08,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:30:08,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:08,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:08,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:30:08,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:30:08,110 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 19:30:08,110 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:08,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:30:08,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:08,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:08,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851595058] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:08,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:30:08,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2024-11-16 19:30:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986337108] [2024-11-16 19:30:08,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:08,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:30:08,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:08,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:30:08,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:30:08,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:30:08,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 105 transitions, 737 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:08,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:08,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:30:08,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:09,026 INFO L124 PetriNetUnfolderBase]: 3934/5914 cut-off events. [2024-11-16 19:30:09,026 INFO L125 PetriNetUnfolderBase]: For 15834/15840 co-relation queries the response was YES. [2024-11-16 19:30:09,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22327 conditions, 5914 events. 3934/5914 cut-off events. For 15834/15840 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35642 event pairs, 1108 based on Foata normal form. 30/5890 useless extension candidates. Maximal degree in co-relation 22303. Up to 1371 conditions per place. [2024-11-16 19:30:09,073 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 155 selfloop transitions, 57 changer transitions 0/218 dead transitions. [2024-11-16 19:30:09,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 218 transitions, 1729 flow [2024-11-16 19:30:09,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:30:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:30:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-11-16 19:30:09,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5264270613107822 [2024-11-16 19:30:09,075 INFO L175 Difference]: Start difference. First operand has 81 places, 105 transitions, 737 flow. Second operand 11 states and 249 transitions. [2024-11-16 19:30:09,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 218 transitions, 1729 flow [2024-11-16 19:30:09,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 218 transitions, 1690 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-16 19:30:09,124 INFO L231 Difference]: Finished difference. Result has 92 places, 122 transitions, 1012 flow [2024-11-16 19:30:09,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1012, PETRI_PLACES=92, PETRI_TRANSITIONS=122} [2024-11-16 19:30:09,125 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-11-16 19:30:09,125 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 122 transitions, 1012 flow [2024-11-16 19:30:09,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:09,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:09,126 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:09,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:30:09,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:09,327 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:09,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash 952461807, now seen corresponding path program 4 times [2024-11-16 19:30:09,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:09,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243641588] [2024-11-16 19:30:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:09,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:09,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:09,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243641588] [2024-11-16 19:30:09,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243641588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:09,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076276234] [2024-11-16 19:30:09,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:30:09,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:09,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:09,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:30:09,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:30:09,514 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:30:09,514 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:09,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:30:09,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:09,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076276234] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:09,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:30:09,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-16 19:30:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302329036] [2024-11-16 19:30:09,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:09,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:30:09,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:30:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:30:09,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:30:09,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 122 transitions, 1012 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:09,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:09,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:30:09,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:10,400 INFO L124 PetriNetUnfolderBase]: 3959/5992 cut-off events. [2024-11-16 19:30:10,401 INFO L125 PetriNetUnfolderBase]: For 21625/21685 co-relation queries the response was YES. [2024-11-16 19:30:10,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24357 conditions, 5992 events. 3959/5992 cut-off events. For 21625/21685 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 35999 event pairs, 931 based on Foata normal form. 24/5947 useless extension candidates. Maximal degree in co-relation 24329. Up to 1191 conditions per place. [2024-11-16 19:30:10,431 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 156 selfloop transitions, 64 changer transitions 0/226 dead transitions. [2024-11-16 19:30:10,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 226 transitions, 2012 flow [2024-11-16 19:30:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:30:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:30:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-11-16 19:30:10,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-11-16 19:30:10,432 INFO L175 Difference]: Start difference. First operand has 92 places, 122 transitions, 1012 flow. Second operand 12 states and 248 transitions. [2024-11-16 19:30:10,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 226 transitions, 2012 flow [2024-11-16 19:30:10,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 226 transitions, 1979 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-16 19:30:10,480 INFO L231 Difference]: Finished difference. Result has 106 places, 134 transitions, 1339 flow [2024-11-16 19:30:10,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1339, PETRI_PLACES=106, PETRI_TRANSITIONS=134} [2024-11-16 19:30:10,481 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-11-16 19:30:10,481 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 134 transitions, 1339 flow [2024-11-16 19:30:10,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:10,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:10,482 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:10,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:30:10,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:10,685 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:10,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash -974543221, now seen corresponding path program 5 times [2024-11-16 19:30:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:10,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616045320] [2024-11-16 19:30:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:10,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:10,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:10,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616045320] [2024-11-16 19:30:10,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616045320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:10,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317620600] [2024-11-16 19:30:10,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:30:10,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:10,804 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) [2024-11-16 19:30:10,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:30:10,871 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:30:10,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:10,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:30:10,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:10,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:11,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317620600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:30:11,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:30:11,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-11-16 19:30:11,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352000414] [2024-11-16 19:30:11,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:30:11,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:30:11,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:11,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:30:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:30:11,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:30:11,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 134 transitions, 1339 flow. Second operand has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:11,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:11,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:30:11,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:12,775 INFO L124 PetriNetUnfolderBase]: 6593/9998 cut-off events. [2024-11-16 19:30:12,775 INFO L125 PetriNetUnfolderBase]: For 50122/50163 co-relation queries the response was YES. [2024-11-16 19:30:12,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42360 conditions, 9998 events. 6593/9998 cut-off events. For 50122/50163 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 61740 event pairs, 800 based on Foata normal form. 39/9993 useless extension candidates. Maximal degree in co-relation 42326. Up to 1626 conditions per place. [2024-11-16 19:30:12,834 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 298 selfloop transitions, 243 changer transitions 0/548 dead transitions. [2024-11-16 19:30:12,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 548 transitions, 5663 flow [2024-11-16 19:30:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 19:30:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-16 19:30:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 609 transitions. [2024-11-16 19:30:12,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-11-16 19:30:12,840 INFO L175 Difference]: Start difference. First operand has 106 places, 134 transitions, 1339 flow. Second operand 30 states and 609 transitions. [2024-11-16 19:30:12,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 548 transitions, 5663 flow [2024-11-16 19:30:13,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 548 transitions, 5522 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-11-16 19:30:13,014 INFO L231 Difference]: Finished difference. Result has 148 places, 311 transitions, 4059 flow [2024-11-16 19:30:13,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4059, PETRI_PLACES=148, PETRI_TRANSITIONS=311} [2024-11-16 19:30:13,014 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-11-16 19:30:13,015 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 311 transitions, 4059 flow [2024-11-16 19:30:13,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:13,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:13,015 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:13,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 19:30:13,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:13,216 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:13,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1969592167, now seen corresponding path program 6 times [2024-11-16 19:30:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:13,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996201670] [2024-11-16 19:30:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996201670] [2024-11-16 19:30:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996201670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216960216] [2024-11-16 19:30:13,291 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:30:13,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:13,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:13,294 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) [2024-11-16 19:30:13,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:30:13,352 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-16 19:30:13,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:13,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:30:13,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:13,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216960216] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:13,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:30:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-16 19:30:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785531360] [2024-11-16 19:30:13,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:13,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:30:13,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:30:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-16 19:30:13,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:30:13,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 311 transitions, 4059 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:13,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:13,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:30:13,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:14,582 INFO L124 PetriNetUnfolderBase]: 5021/7622 cut-off events. [2024-11-16 19:30:14,583 INFO L125 PetriNetUnfolderBase]: For 63169/63263 co-relation queries the response was YES. [2024-11-16 19:30:14,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39070 conditions, 7622 events. 5021/7622 cut-off events. For 63169/63263 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 47178 event pairs, 1167 based on Foata normal form. 26/7518 useless extension candidates. Maximal degree in co-relation 39018. Up to 1779 conditions per place. [2024-11-16 19:30:14,629 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 213 selfloop transitions, 180 changer transitions 0/399 dead transitions. [2024-11-16 19:30:14,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 399 transitions, 5404 flow [2024-11-16 19:30:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:30:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:30:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-11-16 19:30:14,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186046511627908 [2024-11-16 19:30:14,632 INFO L175 Difference]: Start difference. First operand has 148 places, 311 transitions, 4059 flow. Second operand 10 states and 223 transitions. [2024-11-16 19:30:14,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 399 transitions, 5404 flow [2024-11-16 19:30:14,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 399 transitions, 5296 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-11-16 19:30:14,812 INFO L231 Difference]: Finished difference. Result has 156 places, 316 transitions, 4548 flow [2024-11-16 19:30:14,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4548, PETRI_PLACES=156, PETRI_TRANSITIONS=316} [2024-11-16 19:30:14,813 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-11-16 19:30:14,813 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 316 transitions, 4548 flow [2024-11-16 19:30:14,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:14,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:14,813 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:14,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 19:30:15,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:15,018 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:15,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2099654972, now seen corresponding path program 1 times [2024-11-16 19:30:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:15,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773403830] [2024-11-16 19:30:15,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:15,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:15,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:15,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773403830] [2024-11-16 19:30:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773403830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:15,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:15,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:30:15,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254215397] [2024-11-16 19:30:15,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:15,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:30:15,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:15,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:30:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:30:15,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-16 19:30:15,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 316 transitions, 4548 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:15,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:15,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-16 19:30:15,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:15,784 INFO L124 PetriNetUnfolderBase]: 3291/5361 cut-off events. [2024-11-16 19:30:15,784 INFO L125 PetriNetUnfolderBase]: For 60146/60454 co-relation queries the response was YES. [2024-11-16 19:30:15,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29350 conditions, 5361 events. 3291/5361 cut-off events. For 60146/60454 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 34817 event pairs, 1186 based on Foata normal form. 90/5304 useless extension candidates. Maximal degree in co-relation 29296. Up to 4017 conditions per place. [2024-11-16 19:30:15,830 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 295 selfloop transitions, 9 changer transitions 0/323 dead transitions. [2024-11-16 19:30:15,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 323 transitions, 5184 flow [2024-11-16 19:30:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:30:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:30:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-16 19:30:15,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49224806201550386 [2024-11-16 19:30:15,832 INFO L175 Difference]: Start difference. First operand has 156 places, 316 transitions, 4548 flow. Second operand 6 states and 127 transitions. [2024-11-16 19:30:15,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 323 transitions, 5184 flow [2024-11-16 19:30:15,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 323 transitions, 5087 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-16 19:30:15,970 INFO L231 Difference]: Finished difference. Result has 150 places, 294 transitions, 4336 flow [2024-11-16 19:30:15,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4301, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4336, PETRI_PLACES=150, PETRI_TRANSITIONS=294} [2024-11-16 19:30:15,971 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-11-16 19:30:15,971 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 294 transitions, 4336 flow [2024-11-16 19:30:15,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:15,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:15,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:15,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 19:30:15,972 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:15,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1913542034, now seen corresponding path program 1 times [2024-11-16 19:30:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823543151] [2024-11-16 19:30:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:16,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:16,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823543151] [2024-11-16 19:30:16,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823543151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:16,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:16,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:30:16,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535031070] [2024-11-16 19:30:16,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:16,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:30:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:30:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:30:16,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-16 19:30:16,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 294 transitions, 4336 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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) [2024-11-16 19:30:16,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:16,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-16 19:30:16,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:16,621 INFO L124 PetriNetUnfolderBase]: 3405/5300 cut-off events. [2024-11-16 19:30:16,622 INFO L125 PetriNetUnfolderBase]: For 57006/57126 co-relation queries the response was YES. [2024-11-16 19:30:16,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29238 conditions, 5300 events. 3405/5300 cut-off events. For 57006/57126 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 31711 event pairs, 1065 based on Foata normal form. 36/5258 useless extension candidates. Maximal degree in co-relation 29187. Up to 3791 conditions per place. [2024-11-16 19:30:16,659 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 265 selfloop transitions, 28 changer transitions 25/332 dead transitions. [2024-11-16 19:30:16,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 332 transitions, 5344 flow [2024-11-16 19:30:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:30:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:30:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-11-16 19:30:16,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-11-16 19:30:16,662 INFO L175 Difference]: Start difference. First operand has 150 places, 294 transitions, 4336 flow. Second operand 7 states and 136 transitions. [2024-11-16 19:30:16,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 332 transitions, 5344 flow [2024-11-16 19:30:16,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 332 transitions, 5159 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-16 19:30:16,839 INFO L231 Difference]: Finished difference. Result has 142 places, 274 transitions, 4080 flow [2024-11-16 19:30:16,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4080, PETRI_PLACES=142, PETRI_TRANSITIONS=274} [2024-11-16 19:30:16,840 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-11-16 19:30:16,840 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 274 transitions, 4080 flow [2024-11-16 19:30:16,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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) [2024-11-16 19:30:16,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:16,841 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:16,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 19:30:16,841 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:16,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:16,841 INFO L85 PathProgramCache]: Analyzing trace with hash 412686696, now seen corresponding path program 1 times [2024-11-16 19:30:16,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:16,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052444368] [2024-11-16 19:30:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:16,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:16,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:16,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052444368] [2024-11-16 19:30:16,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052444368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:16,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949237010] [2024-11-16 19:30:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:16,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:16,899 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) [2024-11-16 19:30:16,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:30:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:16,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:30:16,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:16,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:17,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949237010] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:17,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:30:17,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-16 19:30:17,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489538489] [2024-11-16 19:30:17,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:17,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:30:17,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:30:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:30:17,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-16 19:30:17,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 274 transitions, 4080 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:17,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:17,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-16 19:30:17,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:17,742 INFO L124 PetriNetUnfolderBase]: 3752/5818 cut-off events. [2024-11-16 19:30:17,742 INFO L125 PetriNetUnfolderBase]: For 66105/66553 co-relation queries the response was YES. [2024-11-16 19:30:17,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32744 conditions, 5818 events. 3752/5818 cut-off events. For 66105/66553 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 34789 event pairs, 1175 based on Foata normal form. 353/6052 useless extension candidates. Maximal degree in co-relation 32698. Up to 4268 conditions per place. [2024-11-16 19:30:17,783 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 366 selfloop transitions, 15 changer transitions 0/399 dead transitions. [2024-11-16 19:30:17,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 399 transitions, 6837 flow [2024-11-16 19:30:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:30:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:30:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-11-16 19:30:17,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-11-16 19:30:17,788 INFO L175 Difference]: Start difference. First operand has 142 places, 274 transitions, 4080 flow. Second operand 5 states and 96 transitions. [2024-11-16 19:30:17,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 399 transitions, 6837 flow [2024-11-16 19:30:18,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 399 transitions, 6615 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-16 19:30:18,008 INFO L231 Difference]: Finished difference. Result has 132 places, 275 transitions, 3974 flow [2024-11-16 19:30:18,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3974, PETRI_PLACES=132, PETRI_TRANSITIONS=275} [2024-11-16 19:30:18,009 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-11-16 19:30:18,009 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 275 transitions, 3974 flow [2024-11-16 19:30:18,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:18,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:18,009 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:18,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 19:30:18,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:18,210 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:18,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1596113527, now seen corresponding path program 1 times [2024-11-16 19:30:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:18,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970959981] [2024-11-16 19:30:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:18,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:18,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970959981] [2024-11-16 19:30:18,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970959981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:18,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44123827] [2024-11-16 19:30:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:18,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:18,660 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) [2024-11-16 19:30:18,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:30:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:18,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 19:30:18,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:18,858 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 15 treesize of output 7 [2024-11-16 19:30:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:18,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:18,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:30:18,933 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 19 treesize of output 16 [2024-11-16 19:30:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44123827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:30:18,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:30:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 18 [2024-11-16 19:30:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734955373] [2024-11-16 19:30:18,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:30:18,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 19:30:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 19:30:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-16 19:30:19,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-16 19:30:19,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 275 transitions, 3974 flow. Second operand has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:19,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:19,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-16 19:30:19,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:20,350 INFO L124 PetriNetUnfolderBase]: 4487/7215 cut-off events. [2024-11-16 19:30:20,350 INFO L125 PetriNetUnfolderBase]: For 68545/69276 co-relation queries the response was YES. [2024-11-16 19:30:20,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38669 conditions, 7215 events. 4487/7215 cut-off events. For 68545/69276 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 47643 event pairs, 200 based on Foata normal form. 76/7239 useless extension candidates. Maximal degree in co-relation 38626. Up to 4311 conditions per place. [2024-11-16 19:30:20,415 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 538 selfloop transitions, 143 changer transitions 1/702 dead transitions. [2024-11-16 19:30:20,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 702 transitions, 10873 flow [2024-11-16 19:30:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:30:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:30:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 316 transitions. [2024-11-16 19:30:20,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5249169435215947 [2024-11-16 19:30:20,419 INFO L175 Difference]: Start difference. First operand has 132 places, 275 transitions, 3974 flow. Second operand 14 states and 316 transitions. [2024-11-16 19:30:20,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 702 transitions, 10873 flow [2024-11-16 19:30:20,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 702 transitions, 10845 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:30:20,710 INFO L231 Difference]: Finished difference. Result has 147 places, 413 transitions, 6607 flow [2024-11-16 19:30:20,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6607, PETRI_PLACES=147, PETRI_TRANSITIONS=413} [2024-11-16 19:30:20,711 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-11-16 19:30:20,711 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 413 transitions, 6607 flow [2024-11-16 19:30:20,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:20,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:20,711 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:20,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 19:30:20,912 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,SelfDestructingSolverStorable12 [2024-11-16 19:30:20,912 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:20,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:20,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1017215043, now seen corresponding path program 1 times [2024-11-16 19:30:20,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:20,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978377646] [2024-11-16 19:30:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:20,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:21,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978377646] [2024-11-16 19:30:21,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978377646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153911565] [2024-11-16 19:30:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:21,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:21,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:21,419 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) [2024-11-16 19:30:21,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 19:30:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:21,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 19:30:21,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:21,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 19:30:21,695 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 15 treesize of output 7 [2024-11-16 19:30:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:21,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153911565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:30:21,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:30:21,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 24 [2024-11-16 19:30:21,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534197057] [2024-11-16 19:30:21,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:30:21,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 19:30:21,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 19:30:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:30:22,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-16 19:30:22,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 413 transitions, 6607 flow. Second operand has 25 states, 25 states have (on average 12.52) internal successors, (313), 25 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:22,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:22,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-16 19:30:22,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:25,003 INFO L124 PetriNetUnfolderBase]: 8326/12966 cut-off events. [2024-11-16 19:30:25,003 INFO L125 PetriNetUnfolderBase]: For 125782/126992 co-relation queries the response was YES. [2024-11-16 19:30:25,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72862 conditions, 12966 events. 8326/12966 cut-off events. For 125782/126992 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 88199 event pairs, 552 based on Foata normal form. 111/13013 useless extension candidates. Maximal degree in co-relation 72814. Up to 7442 conditions per place. [2024-11-16 19:30:25,096 INFO L140 encePairwiseOnDemand]: 26/43 looper letters, 780 selfloop transitions, 497 changer transitions 1/1289 dead transitions. [2024-11-16 19:30:25,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 1289 transitions, 20045 flow [2024-11-16 19:30:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-16 19:30:25,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-16 19:30:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 877 transitions. [2024-11-16 19:30:25,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39990880072959417 [2024-11-16 19:30:25,100 INFO L175 Difference]: Start difference. First operand has 147 places, 413 transitions, 6607 flow. Second operand 51 states and 877 transitions. [2024-11-16 19:30:25,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 1289 transitions, 20045 flow [2024-11-16 19:30:25,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1289 transitions, 19855 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-11-16 19:30:25,713 INFO L231 Difference]: Finished difference. Result has 217 places, 868 transitions, 14723 flow [2024-11-16 19:30:25,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6562, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=14723, PETRI_PLACES=217, PETRI_TRANSITIONS=868} [2024-11-16 19:30:25,714 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-11-16 19:30:25,714 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 868 transitions, 14723 flow [2024-11-16 19:30:25,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.52) internal successors, (313), 25 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:25,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:25,714 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:25,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 19:30:25,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 19:30:25,915 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:25,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1445616241, now seen corresponding path program 2 times [2024-11-16 19:30:25,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:25,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997363981] [2024-11-16 19:30:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:25,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:26,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:26,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997363981] [2024-11-16 19:30:26,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997363981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:26,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794707286] [2024-11-16 19:30:26,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:30:26,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:26,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:26,259 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) [2024-11-16 19:30:26,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 19:30:26,321 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:30:26,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:26,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 19:30:26,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:26,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 19:30:26,545 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 15 treesize of output 7 [2024-11-16 19:30:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:26,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:26,860 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 33 treesize of output 29 [2024-11-16 19:30:26,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:30:26,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 62 [2024-11-16 19:30:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:26,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794707286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:30:26,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:30:26,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2024-11-16 19:30:26,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565065385] [2024-11-16 19:30:26,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:30:26,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 19:30:26,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 19:30:26,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:30:27,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:30:27,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 868 transitions, 14723 flow. Second operand has 25 states, 25 states have (on average 11.24) internal successors, (281), 25 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:27,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:27,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:30:27,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:32,108 INFO L124 PetriNetUnfolderBase]: 15926/24206 cut-off events. [2024-11-16 19:30:32,108 INFO L125 PetriNetUnfolderBase]: For 278633/278811 co-relation queries the response was YES. [2024-11-16 19:30:32,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148054 conditions, 24206 events. 15926/24206 cut-off events. For 278633/278811 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 168972 event pairs, 900 based on Foata normal form. 83/24209 useless extension candidates. Maximal degree in co-relation 147983. Up to 14676 conditions per place. [2024-11-16 19:30:32,320 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 1170 selfloop transitions, 430 changer transitions 5/1638 dead transitions. [2024-11-16 19:30:32,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 1638 transitions, 29355 flow [2024-11-16 19:30:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 19:30:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-16 19:30:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 405 transitions. [2024-11-16 19:30:32,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-11-16 19:30:32,321 INFO L175 Difference]: Start difference. First operand has 217 places, 868 transitions, 14723 flow. Second operand 20 states and 405 transitions. [2024-11-16 19:30:32,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 1638 transitions, 29355 flow [2024-11-16 19:30:34,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1638 transitions, 29137 flow, removed 108 selfloop flow, removed 1 redundant places. [2024-11-16 19:30:34,720 INFO L231 Difference]: Finished difference. Result has 243 places, 1170 transitions, 20416 flow [2024-11-16 19:30:34,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14571, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20416, PETRI_PLACES=243, PETRI_TRANSITIONS=1170} [2024-11-16 19:30:34,721 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-11-16 19:30:34,721 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 1170 transitions, 20416 flow [2024-11-16 19:30:34,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.24) internal successors, (281), 25 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:34,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:34,722 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:34,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 19:30:34,922 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,SelfDestructingSolverStorable14 [2024-11-16 19:30:34,922 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:34,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1608662535, now seen corresponding path program 3 times [2024-11-16 19:30:34,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:34,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735336758] [2024-11-16 19:30:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:34,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:35,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:35,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735336758] [2024-11-16 19:30:35,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735336758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:35,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230847509] [2024-11-16 19:30:35,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:30:35,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:35,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:35,242 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) [2024-11-16 19:30:35,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 19:30:35,311 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 19:30:35,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:35,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 19:30:35,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:35,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 19:30:35,593 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 15 treesize of output 7 [2024-11-16 19:30:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:35,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:35,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230847509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:30:35,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:30:35,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 24 [2024-11-16 19:30:35,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693660650] [2024-11-16 19:30:35,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:30:35,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 19:30:35,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:35,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 19:30:35,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:30:35,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:30:35,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 1170 transitions, 20416 flow. Second operand has 25 states, 25 states have (on average 11.64) internal successors, (291), 25 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:35,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:35,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:30:35,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:42,500 INFO L124 PetriNetUnfolderBase]: 18704/28219 cut-off events. [2024-11-16 19:30:42,500 INFO L125 PetriNetUnfolderBase]: For 369894/370963 co-relation queries the response was YES. [2024-11-16 19:30:42,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187350 conditions, 28219 events. 18704/28219 cut-off events. For 369894/370963 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 199960 event pairs, 2036 based on Foata normal form. 385/28347 useless extension candidates. Maximal degree in co-relation 187270. Up to 18823 conditions per place. [2024-11-16 19:30:42,941 INFO L140 encePairwiseOnDemand]: 26/43 looper letters, 1188 selfloop transitions, 612 changer transitions 1/1833 dead transitions. [2024-11-16 19:30:42,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1833 transitions, 33610 flow [2024-11-16 19:30:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-16 19:30:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-16 19:30:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 738 transitions. [2024-11-16 19:30:42,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3991346673877772 [2024-11-16 19:30:42,943 INFO L175 Difference]: Start difference. First operand has 243 places, 1170 transitions, 20416 flow. Second operand 43 states and 738 transitions. [2024-11-16 19:30:42,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1833 transitions, 33610 flow [2024-11-16 19:30:46,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1833 transitions, 33383 flow, removed 110 selfloop flow, removed 3 redundant places. [2024-11-16 19:30:46,905 INFO L231 Difference]: Finished difference. Result has 297 places, 1401 transitions, 26231 flow [2024-11-16 19:30:46,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=20229, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=26231, PETRI_PLACES=297, PETRI_TRANSITIONS=1401} [2024-11-16 19:30:46,905 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-11-16 19:30:46,906 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 1401 transitions, 26231 flow [2024-11-16 19:30:46,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.64) internal successors, (291), 25 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:46,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:46,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:46,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 19:30:47,106 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,SelfDestructingSolverStorable15 [2024-11-16 19:30:47,107 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:47,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:47,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1255373133, now seen corresponding path program 2 times [2024-11-16 19:30:47,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:47,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626619742] [2024-11-16 19:30:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:47,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:47,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626619742] [2024-11-16 19:30:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626619742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507740439] [2024-11-16 19:30:47,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:30:47,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:47,394 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) [2024-11-16 19:30:47,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 19:30:47,463 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:30:47,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:47,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 19:30:47,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:47,545 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 15 treesize of output 7 [2024-11-16 19:30:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:47,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:47,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:30:47,590 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 23 treesize of output 16 [2024-11-16 19:30:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507740439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:30:47,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:30:47,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 15 [2024-11-16 19:30:47,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599137262] [2024-11-16 19:30:47,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:30:47,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 19:30:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 19:30:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-16 19:30:47,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-16 19:30:47,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 1401 transitions, 26231 flow. Second operand has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:47,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:47,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-16 19:30:47,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:53,386 INFO L124 PetriNetUnfolderBase]: 15542/24337 cut-off events. [2024-11-16 19:30:53,386 INFO L125 PetriNetUnfolderBase]: For 374079/377466 co-relation queries the response was YES. [2024-11-16 19:30:53,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173090 conditions, 24337 events. 15542/24337 cut-off events. For 374079/377466 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 183384 event pairs, 1198 based on Foata normal form. 377/24573 useless extension candidates. Maximal degree in co-relation 172994. Up to 17620 conditions per place. [2024-11-16 19:30:53,657 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 1429 selfloop transitions, 389 changer transitions 1/1885 dead transitions. [2024-11-16 19:30:53,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 1885 transitions, 37901 flow [2024-11-16 19:30:53,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 19:30:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-16 19:30:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 289 transitions. [2024-11-16 19:30:53,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.516994633273703 [2024-11-16 19:30:53,659 INFO L175 Difference]: Start difference. First operand has 297 places, 1401 transitions, 26231 flow. Second operand 13 states and 289 transitions. [2024-11-16 19:30:53,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 1885 transitions, 37901 flow [2024-11-16 19:30:57,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1885 transitions, 37137 flow, removed 355 selfloop flow, removed 6 redundant places. [2024-11-16 19:30:57,384 INFO L231 Difference]: Finished difference. Result has 308 places, 1576 transitions, 29766 flow [2024-11-16 19:30:57,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=25610, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1083, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=29766, PETRI_PLACES=308, PETRI_TRANSITIONS=1576} [2024-11-16 19:30:57,385 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-11-16 19:30:57,385 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 1576 transitions, 29766 flow [2024-11-16 19:30:57,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:57,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:57,386 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:57,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 19:30:57,586 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,SelfDestructingSolverStorable16 [2024-11-16 19:30:57,586 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:30:57,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1160501667, now seen corresponding path program 3 times [2024-11-16 19:30:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409905056] [2024-11-16 19:30:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:57,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:57,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409905056] [2024-11-16 19:30:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409905056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:57,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238375726] [2024-11-16 19:30:57,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:30:57,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:57,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:57,874 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) [2024-11-16 19:30:57,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 19:30:57,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 19:30:57,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:30:57,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 19:30:57,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:58,047 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 15 treesize of output 7 [2024-11-16 19:30:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:58,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:58,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:30:58,105 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 23 treesize of output 16 [2024-11-16 19:30:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:58,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238375726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:30:58,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:30:58,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 19 [2024-11-16 19:30:58,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412173399] [2024-11-16 19:30:58,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:30:58,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 19:30:58,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 19:30:58,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:30:58,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-16 19:30:58,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 1576 transitions, 29766 flow. Second operand has 20 states, 20 states have (on average 14.75) internal successors, (295), 20 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:58,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:58,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-16 19:30:58,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:31:05,194 INFO L124 PetriNetUnfolderBase]: 17294/27034 cut-off events. [2024-11-16 19:31:05,194 INFO L125 PetriNetUnfolderBase]: For 450221/454103 co-relation queries the response was YES. [2024-11-16 19:31:05,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199329 conditions, 27034 events. 17294/27034 cut-off events. For 450221/454103 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 205774 event pairs, 1410 based on Foata normal form. 455/27298 useless extension candidates. Maximal degree in co-relation 199227. Up to 21120 conditions per place. [2024-11-16 19:31:05,680 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 1603 selfloop transitions, 286 changer transitions 1/1956 dead transitions. [2024-11-16 19:31:05,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 1956 transitions, 40405 flow [2024-11-16 19:31:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:31:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:31:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 266 transitions. [2024-11-16 19:31:05,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5155038759689923 [2024-11-16 19:31:05,681 INFO L175 Difference]: Start difference. First operand has 308 places, 1576 transitions, 29766 flow. Second operand 12 states and 266 transitions. [2024-11-16 19:31:05,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 1956 transitions, 40405 flow [2024-11-16 19:31:09,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1956 transitions, 39610 flow, removed 186 selfloop flow, removed 6 redundant places. [2024-11-16 19:31:09,946 INFO L231 Difference]: Finished difference. Result has 317 places, 1693 transitions, 32184 flow [2024-11-16 19:31:09,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=29171, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=32184, PETRI_PLACES=317, PETRI_TRANSITIONS=1693} [2024-11-16 19:31:09,947 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-11-16 19:31:09,948 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 1693 transitions, 32184 flow [2024-11-16 19:31:09,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.75) internal successors, (295), 20 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:31:09,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:31:09,948 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:31:09,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 19:31:10,148 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,SelfDestructingSolverStorable17 [2024-11-16 19:31:10,149 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:31:10,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:31:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1264208707, now seen corresponding path program 4 times [2024-11-16 19:31:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:31:10,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681925898] [2024-11-16 19:31:10,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:31:10,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:31:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:31:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:31:10,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:31:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681925898] [2024-11-16 19:31:10,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681925898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:31:10,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32808117] [2024-11-16 19:31:10,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:31:10,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:31:10,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:31:10,480 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) [2024-11-16 19:31:10,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 19:31:10,543 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:31:10,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:31:10,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 19:31:10,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:31:10,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 19:31:10,745 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 15 treesize of output 7 [2024-11-16 19:31:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:31:10,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:31:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:31:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32808117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:31:10,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:31:10,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 26 [2024-11-16 19:31:10,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357617517] [2024-11-16 19:31:10,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:31:10,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 19:31:10,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:31:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 19:31:10,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-16 19:31:11,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-16 19:31:11,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 1693 transitions, 32184 flow. Second operand has 27 states, 27 states have (on average 12.25925925925926) internal successors, (331), 27 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:31:11,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:31:11,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-16 19:31:11,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand