./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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-sum-array-hom.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 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:34:44,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:34:44,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:34:44,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:34:44,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:34:44,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:34:44,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:34:44,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:34:44,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:34:44,437 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:34:44,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:34:44,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:34:44,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:34:44,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:34:44,444 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:34:44,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:34:44,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:34:44,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:34:44,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:34:44,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:34:44,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:34:44,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:34:44,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:34:44,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:34:44,448 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:34:44,449 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:34:44,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:34:44,449 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:34:44,449 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:34:44,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:34:44,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:34:44,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:34:44,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:34:44,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:34:44,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:34:44,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:34:44,452 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:34:44,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:34:44,452 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:34:44,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:34:44,453 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:34:44,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:34:44,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a [2024-11-10 10:34:44,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:34:44,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:34:44,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:34:44,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:34:44,787 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:34:44,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2024-11-10 10:34:46,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:34:46,484 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:34:46,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2024-11-10 10:34:46,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1749758ca/75b064157e7745b1b27a53544f6cd40b/FLAG3365e7431 [2024-11-10 10:34:46,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1749758ca/75b064157e7745b1b27a53544f6cd40b [2024-11-10 10:34:46,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:34:46,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:34:46,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:34:46,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:34:46,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:34:46,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:34:46" (1/1) ... [2024-11-10 10:34:46,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1020e403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:46, skipping insertion in model container [2024-11-10 10:34:46,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:34:46" (1/1) ... [2024-11-10 10:34:46,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:34:47,086 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-sum-array-hom.wvr.c[2435,2448] [2024-11-10 10:34:47,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:34:47,119 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:34:47,145 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-sum-array-hom.wvr.c[2435,2448] [2024-11-10 10:34:47,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:34:47,175 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:34:47,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47 WrapperNode [2024-11-10 10:34:47,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:34:47,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:34:47,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:34:47,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:34:47,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,225 INFO L138 Inliner]: procedures = 24, calls = 19, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-11-10 10:34:47,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:34:47,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:34:47,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:34:47,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:34:47,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,242 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,260 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]. [2024-11-10 10:34:47,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,274 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:34:47,281 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:34:47,281 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:34:47,282 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:34:47,282 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (1/1) ... [2024-11-10 10:34:47,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:34:47,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:47,318 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) [2024-11-10 10:34:47,320 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 [2024-11-10 10:34:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:34:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:34:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:34:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:34:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:34:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:34:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:34:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:34:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:34:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:34:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:34:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:34:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:34:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:34:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:34:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:34:47,366 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:34:47,506 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:34:47,508 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:34:47,756 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:34:47,757 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:34:47,933 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:34:47,933 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:34:47,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:34:47 BoogieIcfgContainer [2024-11-10 10:34:47,934 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:34:47,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:34:47,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:34:47,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:34:47,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:34:46" (1/3) ... [2024-11-10 10:34:47,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e666395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:34:47, skipping insertion in model container [2024-11-10 10:34:47,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:47" (2/3) ... [2024-11-10 10:34:47,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e666395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:34:47, skipping insertion in model container [2024-11-10 10:34:47,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:34:47" (3/3) ... [2024-11-10 10:34:47,945 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2024-11-10 10:34:47,957 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:34:47,958 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:34:47,958 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:34:48,010 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:34:48,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 39 transitions, 99 flow [2024-11-10 10:34:48,091 INFO L124 PetriNetUnfolderBase]: 8/36 cut-off events. [2024-11-10 10:34:48,092 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:34:48,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 8/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-10 10:34:48,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 39 transitions, 99 flow [2024-11-10 10:34:48,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 35 transitions, 88 flow [2024-11-10 10:34:48,116 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:34:48,126 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;@291b6aec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:34:48,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:34:48,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:34:48,144 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2024-11-10 10:34:48,145 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:34:48,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:48,146 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] [2024-11-10 10:34:48,146 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)] === [2024-11-10 10:34:48,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1473935705, now seen corresponding path program 1 times [2024-11-10 10:34:48,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658646036] [2024-11-10 10:34:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:48,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658646036] [2024-11-10 10:34:48,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658646036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:48,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:48,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:34:48,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48955806] [2024-11-10 10:34:48,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:48,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:34:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:34:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:34:48,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-10 10:34:48,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 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) [2024-11-10 10:34:48,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:48,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-10 10:34:48,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:48,573 INFO L124 PetriNetUnfolderBase]: 200/341 cut-off events. [2024-11-10 10:34:48,573 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 10:34:48,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 341 events. 200/341 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1231 event pairs, 124 based on Foata normal form. 76/402 useless extension candidates. Maximal degree in co-relation 578. Up to 295 conditions per place. [2024-11-10 10:34:48,581 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 22 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2024-11-10 10:34:48,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 124 flow [2024-11-10 10:34:48,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:34:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:34:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-11-10 10:34:48,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-11-10 10:34:48,595 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 2 states and 50 transitions. [2024-11-10 10:34:48,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 124 flow [2024-11-10 10:34:48,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 112 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:34:48,600 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 68 flow [2024-11-10 10:34:48,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2024-11-10 10:34:48,606 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2024-11-10 10:34:48,607 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 68 flow [2024-11-10 10:34:48,608 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) [2024-11-10 10:34:48,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:48,608 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] [2024-11-10 10:34:48,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:34:48,609 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)] === [2024-11-10 10:34:48,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash -502680170, now seen corresponding path program 1 times [2024-11-10 10:34:48,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:48,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998925850] [2024-11-10 10:34:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:48,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:49,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:49,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998925850] [2024-11-10 10:34:49,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998925850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:49,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:49,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:34:49,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666658004] [2024-11-10 10:34:49,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:49,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:34:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:34:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:34:49,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-10 10:34:49,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 68 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) [2024-11-10 10:34:49,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:49,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-10 10:34:49,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:49,332 INFO L124 PetriNetUnfolderBase]: 387/685 cut-off events. [2024-11-10 10:34:49,332 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 10:34:49,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 685 events. 387/685 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3236 event pairs, 124 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 1274. Up to 349 conditions per place. [2024-11-10 10:34:49,344 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 34 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2024-11-10 10:34:49,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 185 flow [2024-11-10 10:34:49,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:34:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:34:49,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-10 10:34:49,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6495726495726496 [2024-11-10 10:34:49,346 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 68 flow. Second operand 3 states and 76 transitions. [2024-11-10 10:34:49,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 185 flow [2024-11-10 10:34:49,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 185 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:34:49,350 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 94 flow [2024-11-10 10:34:49,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2024-11-10 10:34:49,352 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-11-10 10:34:49,352 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 94 flow [2024-11-10 10:34:49,352 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) [2024-11-10 10:34:49,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:49,353 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] [2024-11-10 10:34:49,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:34:49,354 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)] === [2024-11-10 10:34:49,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:49,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1651750401, now seen corresponding path program 1 times [2024-11-10 10:34:49,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:49,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384246554] [2024-11-10 10:34:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:49,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:49,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:49,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384246554] [2024-11-10 10:34:49,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384246554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:49,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:49,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:34:49,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596171081] [2024-11-10 10:34:49,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:49,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:34:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:34:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:34:49,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-10 10:34:49,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 94 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) [2024-11-10 10:34:49,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:49,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-10 10:34:49,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:49,802 INFO L124 PetriNetUnfolderBase]: 703/1290 cut-off events. [2024-11-10 10:34:49,802 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-11-10 10:34:49,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2762 conditions, 1290 events. 703/1290 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7490 event pairs, 401 based on Foata normal form. 46/1300 useless extension candidates. Maximal degree in co-relation 2757. Up to 568 conditions per place. [2024-11-10 10:34:49,811 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 56 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2024-11-10 10:34:49,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 70 transitions, 320 flow [2024-11-10 10:34:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:34:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:34:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-11-10 10:34:49,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2024-11-10 10:34:49,814 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 94 flow. Second operand 6 states and 122 transitions. [2024-11-10 10:34:49,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 70 transitions, 320 flow [2024-11-10 10:34:49,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:34:49,817 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 136 flow [2024-11-10 10:34:49,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-10 10:34:49,818 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-11-10 10:34:49,818 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 136 flow [2024-11-10 10:34:49,819 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) [2024-11-10 10:34:49,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:49,819 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] [2024-11-10 10:34:49,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:34:49,819 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)] === [2024-11-10 10:34:49,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:49,820 INFO L85 PathProgramCache]: Analyzing trace with hash 16442451, now seen corresponding path program 1 times [2024-11-10 10:34:49,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:49,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208539397] [2024-11-10 10:34:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:49,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:49,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208539397] [2024-11-10 10:34:49,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208539397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:49,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:49,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:34:49,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002441034] [2024-11-10 10:34:49,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:49,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:34:49,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:49,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:34:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:34:49,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-10 10:34:49,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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) [2024-11-10 10:34:49,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:49,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-10 10:34:49,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:50,184 INFO L124 PetriNetUnfolderBase]: 611/1121 cut-off events. [2024-11-10 10:34:50,184 INFO L125 PetriNetUnfolderBase]: For 685/685 co-relation queries the response was YES. [2024-11-10 10:34:50,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2606 conditions, 1121 events. 611/1121 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6271 event pairs, 348 based on Foata normal form. 41/1141 useless extension candidates. Maximal degree in co-relation 2597. Up to 568 conditions per place. [2024-11-10 10:34:50,193 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 51 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2024-11-10 10:34:50,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 328 flow [2024-11-10 10:34:50,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:34:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:34:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-11-10 10:34:50,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2024-11-10 10:34:50,196 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 136 flow. Second operand 6 states and 119 transitions. [2024-11-10 10:34:50,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 328 flow [2024-11-10 10:34:50,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:34:50,199 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 163 flow [2024-11-10 10:34:50,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-11-10 10:34:50,200 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2024-11-10 10:34:50,200 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 163 flow [2024-11-10 10:34:50,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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) [2024-11-10 10:34:50,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:50,201 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] [2024-11-10 10:34:50,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:34:50,202 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)] === [2024-11-10 10:34:50,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:50,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1478776459, now seen corresponding path program 1 times [2024-11-10 10:34:50,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:50,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924611165] [2024-11-10 10:34:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:50,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:50,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924611165] [2024-11-10 10:34:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924611165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:50,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:34:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823084920] [2024-11-10 10:34:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:50,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:34:50,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:34:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:34:50,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-10 10:34:50,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:50,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:50,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-10 10:34:50,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:50,589 INFO L124 PetriNetUnfolderBase]: 654/1085 cut-off events. [2024-11-10 10:34:50,589 INFO L125 PetriNetUnfolderBase]: For 1140/1140 co-relation queries the response was YES. [2024-11-10 10:34:50,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 1085 events. 654/1085 cut-off events. For 1140/1140 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5509 event pairs, 333 based on Foata normal form. 22/1089 useless extension candidates. Maximal degree in co-relation 2956. Up to 568 conditions per place. [2024-11-10 10:34:50,596 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 35 selfloop transitions, 4 changer transitions 25/71 dead transitions. [2024-11-10 10:34:50,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 401 flow [2024-11-10 10:34:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:34:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:34:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-11-10 10:34:50,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-10 10:34:50,598 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 163 flow. Second operand 7 states and 130 transitions. [2024-11-10 10:34:50,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 401 flow [2024-11-10 10:34:50,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 394 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:34:50,602 INFO L231 Difference]: Finished difference. Result has 54 places, 35 transitions, 130 flow [2024-11-10 10:34:50,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=130, PETRI_PLACES=54, PETRI_TRANSITIONS=35} [2024-11-10 10:34:50,603 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2024-11-10 10:34:50,603 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 35 transitions, 130 flow [2024-11-10 10:34:50,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:50,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:50,603 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] [2024-11-10 10:34:50,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:34:50,604 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)] === [2024-11-10 10:34:50,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1483227511, now seen corresponding path program 1 times [2024-11-10 10:34:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:50,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977747491] [2024-11-10 10:34:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:50,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:50,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:50,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977747491] [2024-11-10 10:34:50,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977747491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142462093] [2024-11-10 10:34:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:50,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:50,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:50,726 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) [2024-11-10 10:34:50,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:34:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:50,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:34:50,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:50,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:51,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142462093] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:51,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:34:51,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-10 10:34:51,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440250922] [2024-11-10 10:34:51,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:51,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:34:51,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:34:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:34:51,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:34:51,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 35 transitions, 130 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) [2024-11-10 10:34:51,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:51,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:34:51,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:51,451 INFO L124 PetriNetUnfolderBase]: 916/1423 cut-off events. [2024-11-10 10:34:51,451 INFO L125 PetriNetUnfolderBase]: For 1435/1435 co-relation queries the response was YES. [2024-11-10 10:34:51,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4030 conditions, 1423 events. 916/1423 cut-off events. For 1435/1435 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6991 event pairs, 231 based on Foata normal form. 26/1412 useless extension candidates. Maximal degree in co-relation 4017. Up to 592 conditions per place. [2024-11-10 10:34:51,462 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 78 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-11-10 10:34:51,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 98 transitions, 569 flow [2024-11-10 10:34:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:34:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:34:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-11-10 10:34:51,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-11-10 10:34:51,464 INFO L175 Difference]: Start difference. First operand has 54 places, 35 transitions, 130 flow. Second operand 9 states and 162 transitions. [2024-11-10 10:34:51,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 98 transitions, 569 flow [2024-11-10 10:34:51,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 98 transitions, 465 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-11-10 10:34:51,475 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 201 flow [2024-11-10 10:34:51,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-11-10 10:34:51,476 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2024-11-10 10:34:51,476 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 201 flow [2024-11-10 10:34:51,476 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) [2024-11-10 10:34:51,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:51,477 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] [2024-11-10 10:34:51,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:34:51,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 10:34:51,680 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)] === [2024-11-10 10:34:51,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1277566213, now seen corresponding path program 2 times [2024-11-10 10:34:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:51,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631595376] [2024-11-10 10:34:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:51,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:51,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:51,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631595376] [2024-11-10 10:34:51,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631595376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:51,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279414291] [2024-11-10 10:34:51,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:34:51,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:51,809 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) [2024-11-10 10:34:51,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:34:51,897 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:34:51,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:51,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:34:51,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:52,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:52,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279414291] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:52,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:34:52,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2024-11-10 10:34:52,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965263056] [2024-11-10 10:34:52,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:52,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:34:52,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:52,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:34:52,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:34:52,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:34:52,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 201 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) [2024-11-10 10:34:52,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:52,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:34:52,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:52,601 INFO L124 PetriNetUnfolderBase]: 1417/2150 cut-off events. [2024-11-10 10:34:52,602 INFO L125 PetriNetUnfolderBase]: For 3153/3153 co-relation queries the response was YES. [2024-11-10 10:34:52,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6454 conditions, 2150 events. 1417/2150 cut-off events. For 3153/3153 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11158 event pairs, 498 based on Foata normal form. 24/2125 useless extension candidates. Maximal degree in co-relation 6443. Up to 1201 conditions per place. [2024-11-10 10:34:52,620 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 63 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2024-11-10 10:34:52,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 605 flow [2024-11-10 10:34:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:34:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:34:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-11-10 10:34:52,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-11-10 10:34:52,622 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 201 flow. Second operand 8 states and 139 transitions. [2024-11-10 10:34:52,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 605 flow [2024-11-10 10:34:52,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 602 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:52,630 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 431 flow [2024-11-10 10:34:52,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=431, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2024-11-10 10:34:52,631 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-10 10:34:52,631 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 431 flow [2024-11-10 10:34:52,632 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) [2024-11-10 10:34:52,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:52,632 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] [2024-11-10 10:34:52,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:34:52,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-10 10:34:52,837 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)] === [2024-11-10 10:34:52,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1644424377, now seen corresponding path program 3 times [2024-11-10 10:34:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098571012] [2024-11-10 10:34:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098571012] [2024-11-10 10:34:52,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098571012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268904560] [2024-11-10 10:34:52,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:34:52,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:52,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:52,967 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) [2024-11-10 10:34:52,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:34:53,042 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:34:53,043 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:53,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:34:53,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:53,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:53,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268904560] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:53,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:34:53,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2024-11-10 10:34:53,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740232394] [2024-11-10 10:34:53,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:53,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:34:53,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:53,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:34:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:34:53,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:34:53,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 431 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) [2024-11-10 10:34:53,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:53,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:34:53,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:53,585 INFO L124 PetriNetUnfolderBase]: 1439/2203 cut-off events. [2024-11-10 10:34:53,585 INFO L125 PetriNetUnfolderBase]: For 6301/6301 co-relation queries the response was YES. [2024-11-10 10:34:53,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8065 conditions, 2203 events. 1439/2203 cut-off events. For 6301/6301 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11788 event pairs, 462 based on Foata normal form. 24/2174 useless extension candidates. Maximal degree in co-relation 8050. Up to 1244 conditions per place. [2024-11-10 10:34:53,605 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 61 selfloop transitions, 33 changer transitions 0/100 dead transitions. [2024-11-10 10:34:53,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 803 flow [2024-11-10 10:34:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:34:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:34:53,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-11-10 10:34:53,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4468864468864469 [2024-11-10 10:34:53,607 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 431 flow. Second operand 7 states and 122 transitions. [2024-11-10 10:34:53,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 803 flow [2024-11-10 10:34:53,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 788 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:53,622 INFO L231 Difference]: Finished difference. Result has 65 places, 75 transitions, 621 flow [2024-11-10 10:34:53,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=621, PETRI_PLACES=65, PETRI_TRANSITIONS=75} [2024-11-10 10:34:53,623 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2024-11-10 10:34:53,625 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 75 transitions, 621 flow [2024-11-10 10:34:53,625 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) [2024-11-10 10:34:53,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:53,626 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] [2024-11-10 10:34:53,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:34:53,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:53,827 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)] === [2024-11-10 10:34:53,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1218724669, now seen corresponding path program 4 times [2024-11-10 10:34:53,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287895941] [2024-11-10 10:34:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:53,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287895941] [2024-11-10 10:34:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287895941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344081406] [2024-11-10 10:34:53,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:34:53,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:53,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:53,930 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) [2024-11-10 10:34:53,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:34:53,997 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:34:53,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:53,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:34:54,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:54,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:54,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344081406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:54,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:54,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-10 10:34:54,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323539638] [2024-11-10 10:34:54,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:54,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:34:54,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:54,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:34:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:34:54,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:34:54,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 75 transitions, 621 flow. Second operand has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 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) [2024-11-10 10:34:54,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:54,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:34:54,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:54,829 INFO L124 PetriNetUnfolderBase]: 1888/2922 cut-off events. [2024-11-10 10:34:54,829 INFO L125 PetriNetUnfolderBase]: For 11964/11996 co-relation queries the response was YES. [2024-11-10 10:34:54,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11676 conditions, 2922 events. 1888/2922 cut-off events. For 11964/11996 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15523 event pairs, 301 based on Foata normal form. 32/2938 useless extension candidates. Maximal degree in co-relation 11658. Up to 700 conditions per place. [2024-11-10 10:34:54,851 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 137 selfloop transitions, 66 changer transitions 0/209 dead transitions. [2024-11-10 10:34:54,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 209 transitions, 1979 flow [2024-11-10 10:34:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:34:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:34:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 254 transitions. [2024-11-10 10:34:54,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2024-11-10 10:34:54,853 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 621 flow. Second operand 15 states and 254 transitions. [2024-11-10 10:34:54,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 209 transitions, 1979 flow [2024-11-10 10:34:54,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 209 transitions, 1883 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-10 10:34:54,870 INFO L231 Difference]: Finished difference. Result has 86 places, 118 transitions, 1209 flow [2024-11-10 10:34:54,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1209, PETRI_PLACES=86, PETRI_TRANSITIONS=118} [2024-11-10 10:34:54,871 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-11-10 10:34:54,872 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 118 transitions, 1209 flow [2024-11-10 10:34:54,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 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) [2024-11-10 10:34:54,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:54,872 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] [2024-11-10 10:34:54,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 10:34:55,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:55,073 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)] === [2024-11-10 10:34:55,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash -759632015, now seen corresponding path program 5 times [2024-11-10 10:34:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85123485] [2024-11-10 10:34:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:55,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:55,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85123485] [2024-11-10 10:34:55,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85123485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:55,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214609955] [2024-11-10 10:34:55,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:34:55,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:55,189 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) [2024-11-10 10:34:55,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:34:55,269 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:34:55,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:55,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:34:55,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:55,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:55,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214609955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:55,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:55,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-11-10 10:34:55,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662007534] [2024-11-10 10:34:55,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:55,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:34:55,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:55,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:34:55,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:34:55,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:34:55,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 118 transitions, 1209 flow. Second operand has 13 states, 13 states have (on average 12.615384615384615) internal successors, (164), 13 states have internal predecessors, (164), 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) [2024-11-10 10:34:55,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:55,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:34:55,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:56,174 INFO L124 PetriNetUnfolderBase]: 1835/2899 cut-off events. [2024-11-10 10:34:56,175 INFO L125 PetriNetUnfolderBase]: For 19705/19741 co-relation queries the response was YES. [2024-11-10 10:34:56,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13308 conditions, 2899 events. 1835/2899 cut-off events. For 19705/19741 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15992 event pairs, 341 based on Foata normal form. 46/2915 useless extension candidates. Maximal degree in co-relation 13280. Up to 862 conditions per place. [2024-11-10 10:34:56,202 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 97 selfloop transitions, 110 changer transitions 0/213 dead transitions. [2024-11-10 10:34:56,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 213 transitions, 2357 flow [2024-11-10 10:34:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:34:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:34:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 225 transitions. [2024-11-10 10:34:56,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4437869822485207 [2024-11-10 10:34:56,205 INFO L175 Difference]: Start difference. First operand has 86 places, 118 transitions, 1209 flow. Second operand 13 states and 225 transitions. [2024-11-10 10:34:56,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 213 transitions, 2357 flow [2024-11-10 10:34:56,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 213 transitions, 2342 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:56,256 INFO L231 Difference]: Finished difference. Result has 102 places, 166 transitions, 2017 flow [2024-11-10 10:34:56,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2017, PETRI_PLACES=102, PETRI_TRANSITIONS=166} [2024-11-10 10:34:56,257 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 65 predicate places. [2024-11-10 10:34:56,257 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 166 transitions, 2017 flow [2024-11-10 10:34:56,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.615384615384615) internal successors, (164), 13 states have internal predecessors, (164), 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) [2024-11-10 10:34:56,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:56,257 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] [2024-11-10 10:34:56,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:34:56,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 10:34:56,459 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)] === [2024-11-10 10:34:56,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1607203497, now seen corresponding path program 6 times [2024-11-10 10:34:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:56,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466285762] [2024-11-10 10:34:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:56,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:56,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:56,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466285762] [2024-11-10 10:34:56,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466285762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:56,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855317810] [2024-11-10 10:34:56,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:34:56,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:56,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:56,557 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) [2024-11-10 10:34:56,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:34:56,646 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 10:34:56,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:56,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:34:56,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:56,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:56,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855317810] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:56,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:34:56,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-10 10:34:56,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182760530] [2024-11-10 10:34:56,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:56,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:34:56,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:56,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:34:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:34:56,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:34:56,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 166 transitions, 2017 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) [2024-11-10 10:34:56,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:56,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:34:56,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:57,107 INFO L124 PetriNetUnfolderBase]: 1292/2060 cut-off events. [2024-11-10 10:34:57,107 INFO L125 PetriNetUnfolderBase]: For 19374/19397 co-relation queries the response was YES. [2024-11-10 10:34:57,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10648 conditions, 2060 events. 1292/2060 cut-off events. For 19374/19397 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11258 event pairs, 419 based on Foata normal form. 34/2030 useless extension candidates. Maximal degree in co-relation 10614. Up to 1265 conditions per place. [2024-11-10 10:34:57,125 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 115 selfloop transitions, 71 changer transitions 0/192 dead transitions. [2024-11-10 10:34:57,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 192 transitions, 2562 flow [2024-11-10 10:34:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:34:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:34:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-11-10 10:34:57,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4432234432234432 [2024-11-10 10:34:57,126 INFO L175 Difference]: Start difference. First operand has 102 places, 166 transitions, 2017 flow. Second operand 7 states and 121 transitions. [2024-11-10 10:34:57,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 192 transitions, 2562 flow [2024-11-10 10:34:57,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 192 transitions, 2485 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:57,175 INFO L231 Difference]: Finished difference. Result has 108 places, 171 transitions, 2208 flow [2024-11-10 10:34:57,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2208, PETRI_PLACES=108, PETRI_TRANSITIONS=171} [2024-11-10 10:34:57,176 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 71 predicate places. [2024-11-10 10:34:57,176 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 171 transitions, 2208 flow [2024-11-10 10:34:57,176 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) [2024-11-10 10:34:57,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:57,176 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] [2024-11-10 10:34:57,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 10:34:57,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:57,378 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)] === [2024-11-10 10:34:57,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1002689049, now seen corresponding path program 1 times [2024-11-10 10:34:57,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:57,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226174712] [2024-11-10 10:34:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:57,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:57,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226174712] [2024-11-10 10:34:57,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226174712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:57,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841568193] [2024-11-10 10:34:57,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:57,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:57,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:57,474 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) [2024-11-10 10:34:57,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:34:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:57,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:34:57,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:57,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841568193] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:57,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:34:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-10 10:34:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256745939] [2024-11-10 10:34:57,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:57,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:34:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:57,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:34:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-10 10:34:57,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-10 10:34:57,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 171 transitions, 2208 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:57,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:57,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-10 10:34:57,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:57,847 INFO L124 PetriNetUnfolderBase]: 1072/1771 cut-off events. [2024-11-10 10:34:57,848 INFO L125 PetriNetUnfolderBase]: For 17427/17712 co-relation queries the response was YES. [2024-11-10 10:34:57,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 1771 events. 1072/1771 cut-off events. For 17427/17712 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9654 event pairs, 273 based on Foata normal form. 109/1815 useless extension candidates. Maximal degree in co-relation 9183. Up to 1236 conditions per place. [2024-11-10 10:34:57,869 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 164 selfloop transitions, 18 changer transitions 0/199 dead transitions. [2024-11-10 10:34:57,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 199 transitions, 2884 flow [2024-11-10 10:34:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:34:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:34:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-10 10:34:57,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-11-10 10:34:57,871 INFO L175 Difference]: Start difference. First operand has 108 places, 171 transitions, 2208 flow. Second operand 5 states and 88 transitions. [2024-11-10 10:34:57,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 199 transitions, 2884 flow [2024-11-10 10:34:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 199 transitions, 2769 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-11-10 10:34:57,913 INFO L231 Difference]: Finished difference. Result has 110 places, 172 transitions, 2162 flow [2024-11-10 10:34:57,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2162, PETRI_PLACES=110, PETRI_TRANSITIONS=172} [2024-11-10 10:34:57,914 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 73 predicate places. [2024-11-10 10:34:57,914 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 172 transitions, 2162 flow [2024-11-10 10:34:57,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:57,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:57,915 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] [2024-11-10 10:34:57,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 10:34:58,115 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 [2024-11-10 10:34:58,115 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)] === [2024-11-10 10:34:58,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash 647054160, now seen corresponding path program 1 times [2024-11-10 10:34:58,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:58,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194326801] [2024-11-10 10:34:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:58,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:58,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:58,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194326801] [2024-11-10 10:34:58,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194326801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:58,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427587274] [2024-11-10 10:34:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:58,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:58,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:58,700 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) [2024-11-10 10:34:58,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:34:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:58,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 10:34:58,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:58,991 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 [2024-11-10 10:34:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:59,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:59,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:59,164 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 24 treesize of output 21 [2024-11-10 10:34:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427587274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:59,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:59,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 17 [2024-11-10 10:34:59,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857540779] [2024-11-10 10:34:59,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:59,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:34:59,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:59,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:34:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:34:59,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-10 10:34:59,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 172 transitions, 2162 flow. Second operand has 18 states, 18 states have (on average 15.5) internal successors, (279), 18 states have internal predecessors, (279), 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) [2024-11-10 10:34:59,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:59,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-10 10:34:59,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:00,054 INFO L124 PetriNetUnfolderBase]: 1340/2352 cut-off events. [2024-11-10 10:35:00,054 INFO L125 PetriNetUnfolderBase]: For 21689/22048 co-relation queries the response was YES. [2024-11-10 10:35:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12475 conditions, 2352 events. 1340/2352 cut-off events. For 21689/22048 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14451 event pairs, 110 based on Foata normal form. 91/2396 useless extension candidates. Maximal degree in co-relation 12438. Up to 1230 conditions per place. [2024-11-10 10:35:00,085 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 228 selfloop transitions, 140 changer transitions 1/388 dead transitions. [2024-11-10 10:35:00,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 388 transitions, 5551 flow [2024-11-10 10:35:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:35:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:35:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-11-10 10:35:00,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-10 10:35:00,087 INFO L175 Difference]: Start difference. First operand has 110 places, 172 transitions, 2162 flow. Second operand 9 states and 195 transitions. [2024-11-10 10:35:00,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 388 transitions, 5551 flow [2024-11-10 10:35:00,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 388 transitions, 5526 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:35:00,139 INFO L231 Difference]: Finished difference. Result has 119 places, 263 transitions, 4066 flow [2024-11-10 10:35:00,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4066, PETRI_PLACES=119, PETRI_TRANSITIONS=263} [2024-11-10 10:35:00,141 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 82 predicate places. [2024-11-10 10:35:00,141 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 263 transitions, 4066 flow [2024-11-10 10:35:00,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.5) internal successors, (279), 18 states have internal predecessors, (279), 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) [2024-11-10 10:35:00,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:00,142 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] [2024-11-10 10:35:00,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 10:35:00,342 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 [2024-11-10 10:35:00,343 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)] === [2024-11-10 10:35:00,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash -622933970, now seen corresponding path program 1 times [2024-11-10 10:35:00,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:00,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498991903] [2024-11-10 10:35:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:00,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:00,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498991903] [2024-11-10 10:35:00,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498991903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:00,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895809328] [2024-11-10 10:35:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:00,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:00,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:00,821 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) [2024-11-10 10:35:00,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:35:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:00,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 10:35:00,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:00,957 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 [2024-11-10 10:35:01,299 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 [2024-11-10 10:35:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:01,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:01,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895809328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:01,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:01,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 24 [2024-11-10 10:35:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039040507] [2024-11-10 10:35:01,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:01,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 10:35:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 10:35:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2024-11-10 10:35:01,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:35:01,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 263 transitions, 4066 flow. Second operand has 25 states, 25 states have (on average 11.76) internal successors, (294), 25 states have internal predecessors, (294), 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) [2024-11-10 10:35:01,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:01,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:35:01,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:03,960 INFO L124 PetriNetUnfolderBase]: 3776/6165 cut-off events. [2024-11-10 10:35:03,960 INFO L125 PetriNetUnfolderBase]: For 72470/72714 co-relation queries the response was YES. [2024-11-10 10:35:03,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37252 conditions, 6165 events. 3776/6165 cut-off events. For 72470/72714 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 40204 event pairs, 397 based on Foata normal form. 30/6144 useless extension candidates. Maximal degree in co-relation 37211. Up to 3497 conditions per place. [2024-11-10 10:35:04,018 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 456 selfloop transitions, 331 changer transitions 2/801 dead transitions. [2024-11-10 10:35:04,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 801 transitions, 12728 flow [2024-11-10 10:35:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 10:35:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 10:35:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 505 transitions. [2024-11-10 10:35:04,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4465075154730327 [2024-11-10 10:35:04,025 INFO L175 Difference]: Start difference. First operand has 119 places, 263 transitions, 4066 flow. Second operand 29 states and 505 transitions. [2024-11-10 10:35:04,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 801 transitions, 12728 flow [2024-11-10 10:35:04,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 801 transitions, 12238 flow, removed 198 selfloop flow, removed 3 redundant places. [2024-11-10 10:35:04,227 INFO L231 Difference]: Finished difference. Result has 159 places, 554 transitions, 9790 flow [2024-11-10 10:35:04,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9790, PETRI_PLACES=159, PETRI_TRANSITIONS=554} [2024-11-10 10:35:04,228 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 122 predicate places. [2024-11-10 10:35:04,228 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 554 transitions, 9790 flow [2024-11-10 10:35:04,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.76) internal successors, (294), 25 states have internal predecessors, (294), 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) [2024-11-10 10:35:04,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:04,229 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] [2024-11-10 10:35:04,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 10:35:04,429 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 [2024-11-10 10:35:04,430 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)] === [2024-11-10 10:35:04,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:04,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1276485260, now seen corresponding path program 2 times [2024-11-10 10:35:04,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:04,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042261377] [2024-11-10 10:35:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:05,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042261377] [2024-11-10 10:35:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042261377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194816140] [2024-11-10 10:35:05,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:35:05,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:05,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:05,177 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) [2024-11-10 10:35:05,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:35:05,254 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:35:05,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:05,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 10:35:05,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:05,302 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 [2024-11-10 10:35:05,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:35:05,638 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 17 treesize of output 15 [2024-11-10 10:35:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:05,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:06,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194816140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:06,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:06,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 25 [2024-11-10 10:35:06,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711616362] [2024-11-10 10:35:06,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:06,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 10:35:06,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 10:35:06,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-10 10:35:06,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:35:06,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 554 transitions, 9790 flow. Second operand has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 26 states have internal predecessors, (306), 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) [2024-11-10 10:35:06,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:06,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:35:06,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:08,628 INFO L124 PetriNetUnfolderBase]: 5333/8625 cut-off events. [2024-11-10 10:35:08,628 INFO L125 PetriNetUnfolderBase]: For 123784/124164 co-relation queries the response was YES. [2024-11-10 10:35:08,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57683 conditions, 8625 events. 5333/8625 cut-off events. For 123784/124164 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 58691 event pairs, 637 based on Foata normal form. 56/8592 useless extension candidates. Maximal degree in co-relation 57626. Up to 5581 conditions per place. [2024-11-10 10:35:08,735 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 556 selfloop transitions, 393 changer transitions 2/963 dead transitions. [2024-11-10 10:35:08,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 963 transitions, 17561 flow [2024-11-10 10:35:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 10:35:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-10 10:35:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 516 transitions. [2024-11-10 10:35:08,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.441025641025641 [2024-11-10 10:35:08,737 INFO L175 Difference]: Start difference. First operand has 159 places, 554 transitions, 9790 flow. Second operand 30 states and 516 transitions. [2024-11-10 10:35:08,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 963 transitions, 17561 flow [2024-11-10 10:35:09,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 963 transitions, 17349 flow, removed 105 selfloop flow, removed 1 redundant places. [2024-11-10 10:35:09,263 INFO L231 Difference]: Finished difference. Result has 197 places, 787 transitions, 15011 flow [2024-11-10 10:35:09,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9602, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15011, PETRI_PLACES=197, PETRI_TRANSITIONS=787} [2024-11-10 10:35:09,264 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 160 predicate places. [2024-11-10 10:35:09,265 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 787 transitions, 15011 flow [2024-11-10 10:35:09,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 26 states have internal predecessors, (306), 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) [2024-11-10 10:35:09,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:09,265 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] [2024-11-10 10:35:09,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 10:35:09,466 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 [2024-11-10 10:35:09,467 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)] === [2024-11-10 10:35:09,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2016412892, now seen corresponding path program 2 times [2024-11-10 10:35:09,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:09,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925590549] [2024-11-10 10:35:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:10,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:10,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925590549] [2024-11-10 10:35:10,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925590549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:10,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180386348] [2024-11-10 10:35:10,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:35:10,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:10,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:10,049 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) [2024-11-10 10:35:10,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:35:10,133 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:35:10,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:10,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 10:35:10,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:10,167 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 [2024-11-10 10:35:10,284 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 [2024-11-10 10:35:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:10,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:10,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180386348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:10,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:10,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 13 [2024-11-10 10:35:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539943252] [2024-11-10 10:35:10,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:10,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:35:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:35:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:35:10,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-10 10:35:10,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 787 transitions, 15011 flow. Second operand has 14 states, 14 states have (on average 15.642857142857142) internal successors, (219), 14 states have internal predecessors, (219), 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) [2024-11-10 10:35:10,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:10,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-10 10:35:10,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:12,219 INFO L124 PetriNetUnfolderBase]: 4334/7361 cut-off events. [2024-11-10 10:35:12,219 INFO L125 PetriNetUnfolderBase]: For 125566/126854 co-relation queries the response was YES. [2024-11-10 10:35:12,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54278 conditions, 7361 events. 4334/7361 cut-off events. For 125566/126854 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 52753 event pairs, 298 based on Foata normal form. 264/7520 useless extension candidates. Maximal degree in co-relation 54210. Up to 4852 conditions per place. [2024-11-10 10:35:12,325 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 631 selfloop transitions, 358 changer transitions 1/1026 dead transitions. [2024-11-10 10:35:12,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1026 transitions, 21221 flow [2024-11-10 10:35:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:35:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:35:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-11-10 10:35:12,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-10 10:35:12,328 INFO L175 Difference]: Start difference. First operand has 197 places, 787 transitions, 15011 flow. Second operand 9 states and 189 transitions. [2024-11-10 10:35:12,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1026 transitions, 21221 flow [2024-11-10 10:35:12,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 1026 transitions, 20537 flow, removed 184 selfloop flow, removed 9 redundant places. [2024-11-10 10:35:12,951 INFO L231 Difference]: Finished difference. Result has 199 places, 937 transitions, 18652 flow [2024-11-10 10:35:12,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14416, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18652, PETRI_PLACES=199, PETRI_TRANSITIONS=937} [2024-11-10 10:35:12,952 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 162 predicate places. [2024-11-10 10:35:12,952 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 937 transitions, 18652 flow [2024-11-10 10:35:12,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.642857142857142) internal successors, (219), 14 states have internal predecessors, (219), 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) [2024-11-10 10:35:12,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:12,952 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] [2024-11-10 10:35:12,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 10:35:13,153 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 [2024-11-10 10:35:13,153 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)] === [2024-11-10 10:35:13,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1822277796, now seen corresponding path program 3 times [2024-11-10 10:35:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:13,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194256017] [2024-11-10 10:35:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:13,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:13,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:13,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194256017] [2024-11-10 10:35:13,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194256017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:13,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476232056] [2024-11-10 10:35:13,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:35:13,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:13,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:13,711 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) [2024-11-10 10:35:13,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 10:35:13,780 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:35:13,780 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:13,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 10:35:13,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:13,932 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 [2024-11-10 10:35:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:13,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:14,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:35:14,048 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 28 treesize of output 21 [2024-11-10 10:35:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:14,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476232056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:14,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:14,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 14 [2024-11-10 10:35:14,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856100714] [2024-11-10 10:35:14,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:14,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:35:14,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:35:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:35:14,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-10 10:35:14,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 937 transitions, 18652 flow. Second operand has 15 states, 15 states have (on average 15.6) internal successors, (234), 15 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) [2024-11-10 10:35:14,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:14,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-10 10:35:14,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:16,210 INFO L124 PetriNetUnfolderBase]: 4472/7620 cut-off events. [2024-11-10 10:35:16,210 INFO L125 PetriNetUnfolderBase]: For 133320/134654 co-relation queries the response was YES. [2024-11-10 10:35:16,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57238 conditions, 7620 events. 4472/7620 cut-off events. For 133320/134654 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 55243 event pairs, 305 based on Foata normal form. 267/7790 useless extension candidates. Maximal degree in co-relation 57167. Up to 5459 conditions per place. [2024-11-10 10:35:16,291 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 723 selfloop transitions, 236 changer transitions 1/996 dead transitions. [2024-11-10 10:35:16,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 996 transitions, 21205 flow [2024-11-10 10:35:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:35:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:35:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-11-10 10:35:16,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5327635327635327 [2024-11-10 10:35:16,293 INFO L175 Difference]: Start difference. First operand has 199 places, 937 transitions, 18652 flow. Second operand 9 states and 187 transitions. [2024-11-10 10:35:16,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 996 transitions, 21205 flow [2024-11-10 10:35:16,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 996 transitions, 20816 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-11-10 10:35:16,873 INFO L231 Difference]: Finished difference. Result has 205 places, 944 transitions, 18890 flow [2024-11-10 10:35:16,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18263, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18890, PETRI_PLACES=205, PETRI_TRANSITIONS=944} [2024-11-10 10:35:16,874 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 168 predicate places. [2024-11-10 10:35:16,874 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 944 transitions, 18890 flow [2024-11-10 10:35:16,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.6) internal successors, (234), 15 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) [2024-11-10 10:35:16,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:16,875 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] [2024-11-10 10:35:16,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 10:35:17,075 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 [2024-11-10 10:35:17,075 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)] === [2024-11-10 10:35:17,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash 419577818, now seen corresponding path program 3 times [2024-11-10 10:35:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:17,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093326809] [2024-11-10 10:35:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:17,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:17,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093326809] [2024-11-10 10:35:17,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093326809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:17,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291423834] [2024-11-10 10:35:17,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:35:17,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:17,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:17,656 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) [2024-11-10 10:35:17,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 10:35:17,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:35:17,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:17,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 10:35:17,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:17,781 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 [2024-11-10 10:35:18,067 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 [2024-11-10 10:35:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:18,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:18,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291423834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:18,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:18,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 24 [2024-11-10 10:35:18,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569030568] [2024-11-10 10:35:18,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:18,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 10:35:18,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 10:35:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2024-11-10 10:35:18,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:35:18,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 944 transitions, 18890 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) [2024-11-10 10:35:18,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:18,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:35:18,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:21,451 INFO L124 PetriNetUnfolderBase]: 6879/10983 cut-off events. [2024-11-10 10:35:21,451 INFO L125 PetriNetUnfolderBase]: For 192999/193687 co-relation queries the response was YES. [2024-11-10 10:35:21,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80298 conditions, 10983 events. 6879/10983 cut-off events. For 192999/193687 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 77080 event pairs, 1037 based on Foata normal form. 219/11073 useless extension candidates. Maximal degree in co-relation 80225. Up to 8711 conditions per place. [2024-11-10 10:35:21,578 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 781 selfloop transitions, 284 changer transitions 1/1078 dead transitions. [2024-11-10 10:35:21,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1078 transitions, 22608 flow [2024-11-10 10:35:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 10:35:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 10:35:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 451 transitions. [2024-11-10 10:35:21,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.413003663003663 [2024-11-10 10:35:21,580 INFO L175 Difference]: Start difference. First operand has 205 places, 944 transitions, 18890 flow. Second operand 28 states and 451 transitions. [2024-11-10 10:35:21,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1078 transitions, 22608 flow [2024-11-10 10:35:22,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 1078 transitions, 22333 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-10 10:35:22,612 INFO L231 Difference]: Finished difference. Result has 236 places, 979 transitions, 19962 flow [2024-11-10 10:35:22,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18627, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=19962, PETRI_PLACES=236, PETRI_TRANSITIONS=979} [2024-11-10 10:35:22,613 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 199 predicate places. [2024-11-10 10:35:22,613 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 979 transitions, 19962 flow [2024-11-10 10:35:22,614 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) [2024-11-10 10:35:22,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:22,614 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] [2024-11-10 10:35:22,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 10:35:22,814 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 [2024-11-10 10:35:22,814 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)] === [2024-11-10 10:35:22,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash 834213564, now seen corresponding path program 4 times [2024-11-10 10:35:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680177768] [2024-11-10 10:35:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:23,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680177768] [2024-11-10 10:35:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680177768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842423745] [2024-11-10 10:35:23,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:35:23,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:23,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:23,342 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) [2024-11-10 10:35:23,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 10:35:23,423 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:35:23,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:23,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 10:35:23,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:23,602 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 [2024-11-10 10:35:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:23,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:23,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:35:23,792 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 28 treesize of output 21 [2024-11-10 10:35:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:24,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842423745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:24,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 16 [2024-11-10 10:35:24,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236524623] [2024-11-10 10:35:24,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:24,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 10:35:24,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 10:35:24,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:35:24,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-10 10:35:24,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 979 transitions, 19962 flow. Second operand has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 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) [2024-11-10 10:35:24,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:24,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-10 10:35:24,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:26,203 INFO L124 PetriNetUnfolderBase]: 4751/8101 cut-off events. [2024-11-10 10:35:26,203 INFO L125 PetriNetUnfolderBase]: For 146128/147536 co-relation queries the response was YES. [2024-11-10 10:35:26,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61017 conditions, 8101 events. 4751/8101 cut-off events. For 146128/147536 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 59357 event pairs, 392 based on Foata normal form. 264/8270 useless extension candidates. Maximal degree in co-relation 60935. Up to 5858 conditions per place. [2024-11-10 10:35:26,318 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 721 selfloop transitions, 267 changer transitions 1/1032 dead transitions. [2024-11-10 10:35:26,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1032 transitions, 22506 flow [2024-11-10 10:35:26,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:35:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:35:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-10 10:35:26,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5242165242165242 [2024-11-10 10:35:26,320 INFO L175 Difference]: Start difference. First operand has 236 places, 979 transitions, 19962 flow. Second operand 9 states and 184 transitions. [2024-11-10 10:35:26,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 1032 transitions, 22506 flow [2024-11-10 10:35:27,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1032 transitions, 22061 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-11-10 10:35:27,211 INFO L231 Difference]: Finished difference. Result has 236 places, 986 transitions, 20222 flow [2024-11-10 10:35:27,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=19517, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20222, PETRI_PLACES=236, PETRI_TRANSITIONS=986} [2024-11-10 10:35:27,212 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 199 predicate places. [2024-11-10 10:35:27,212 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 986 transitions, 20222 flow [2024-11-10 10:35:27,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 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) [2024-11-10 10:35:27,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:27,212 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] [2024-11-10 10:35:27,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 10:35:27,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:27,413 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:27,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:27,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1943173018, now seen corresponding path program 5 times [2024-11-10 10:35:27,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:27,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110648001] [2024-11-10 10:35:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:27,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110648001] [2024-11-10 10:35:27,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110648001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651099739] [2024-11-10 10:35:27,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:35:27,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:27,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:27,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:27,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 10:35:28,018 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-10 10:35:28,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:28,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 10:35:28,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:28,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:35:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:28,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:28,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:35:28,265 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 28 treesize of output 21 [2024-11-10 10:35:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:28,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651099739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:28,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:28,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 13 [2024-11-10 10:35:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026886452] [2024-11-10 10:35:28,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:28,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:35:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:28,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:35:28,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:35:28,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-10 10:35:28,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 986 transitions, 20222 flow. Second operand has 14 states, 14 states have (on average 15.785714285714286) internal successors, (221), 14 states have internal predecessors, (221), 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) [2024-11-10 10:35:28,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:28,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-10 10:35:28,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:30,513 INFO L124 PetriNetUnfolderBase]: 4842/8258 cut-off events. [2024-11-10 10:35:30,513 INFO L125 PetriNetUnfolderBase]: For 149953/151422 co-relation queries the response was YES. [2024-11-10 10:35:30,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62671 conditions, 8258 events. 4842/8258 cut-off events. For 149953/151422 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 60891 event pairs, 456 based on Foata normal form. 292/8445 useless extension candidates. Maximal degree in co-relation 62586. Up to 5563 conditions per place. [2024-11-10 10:35:30,612 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 651 selfloop transitions, 390 changer transitions 1/1085 dead transitions. [2024-11-10 10:35:30,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1085 transitions, 23635 flow [2024-11-10 10:35:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:35:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:35:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-11-10 10:35:30,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5299145299145299 [2024-11-10 10:35:30,614 INFO L175 Difference]: Start difference. First operand has 236 places, 986 transitions, 20222 flow. Second operand 9 states and 186 transitions. [2024-11-10 10:35:30,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 1085 transitions, 23635 flow [2024-11-10 10:35:31,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 1085 transitions, 23242 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-11-10 10:35:31,543 INFO L231 Difference]: Finished difference. Result has 241 places, 1010 transitions, 21266 flow [2024-11-10 10:35:31,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=19829, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21266, PETRI_PLACES=241, PETRI_TRANSITIONS=1010} [2024-11-10 10:35:31,545 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 204 predicate places. [2024-11-10 10:35:31,545 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 1010 transitions, 21266 flow [2024-11-10 10:35:31,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.785714285714286) internal successors, (221), 14 states have internal predecessors, (221), 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) [2024-11-10 10:35:31,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:31,545 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] [2024-11-10 10:35:31,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 10:35:31,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:31,746 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:31,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash -883645964, now seen corresponding path program 6 times [2024-11-10 10:35:31,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:31,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988919385] [2024-11-10 10:35:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:32,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988919385] [2024-11-10 10:35:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988919385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936084809] [2024-11-10 10:35:32,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:35:32,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:32,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:32,238 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:32,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 10:35:32,314 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 10:35:32,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:32,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 10:35:32,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:32,478 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 [2024-11-10 10:35:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:32,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:32,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:35:32,588 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 24 treesize of output 21 [2024-11-10 10:35:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:33,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936084809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:33,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:33,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 15 [2024-11-10 10:35:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582029835] [2024-11-10 10:35:33,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:33,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 10:35:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 10:35:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-10 10:35:33,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-10 10:35:33,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 1010 transitions, 21266 flow. Second operand has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 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) [2024-11-10 10:35:33,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:33,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-10 10:35:33,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:35,341 INFO L124 PetriNetUnfolderBase]: 5034/8589 cut-off events. [2024-11-10 10:35:35,341 INFO L125 PetriNetUnfolderBase]: For 163165/164649 co-relation queries the response was YES. [2024-11-10 10:35:35,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66208 conditions, 8589 events. 5034/8589 cut-off events. For 163165/164649 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 63758 event pairs, 379 based on Foata normal form. 224/8720 useless extension candidates. Maximal degree in co-relation 66121. Up to 6074 conditions per place. [2024-11-10 10:35:35,464 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 769 selfloop transitions, 255 changer transitions 1/1068 dead transitions. [2024-11-10 10:35:35,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1068 transitions, 23982 flow [2024-11-10 10:35:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:35:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:35:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-11-10 10:35:35,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5270655270655271 [2024-11-10 10:35:35,465 INFO L175 Difference]: Start difference. First operand has 241 places, 1010 transitions, 21266 flow. Second operand 9 states and 185 transitions. [2024-11-10 10:35:35,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1068 transitions, 23982 flow [2024-11-10 10:35:36,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1068 transitions, 23177 flow, removed 153 selfloop flow, removed 5 redundant places. [2024-11-10 10:35:36,512 INFO L231 Difference]: Finished difference. Result has 247 places, 1023 transitions, 21325 flow [2024-11-10 10:35:36,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=20461, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21325, PETRI_PLACES=247, PETRI_TRANSITIONS=1023} [2024-11-10 10:35:36,514 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 210 predicate places. [2024-11-10 10:35:36,514 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 1023 transitions, 21325 flow [2024-11-10 10:35:36,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 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) [2024-11-10 10:35:36,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:36,515 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] [2024-11-10 10:35:36,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 10:35:36,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:36,716 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:36,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 697022580, now seen corresponding path program 4 times [2024-11-10 10:35:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:36,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757485744] [2024-11-10 10:35:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:36,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757485744] [2024-11-10 10:35:37,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757485744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119607702] [2024-11-10 10:35:37,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:35:37,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:37,304 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:37,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 10:35:37,394 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:35:37,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:37,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-10 10:35:37,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:37,442 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 [2024-11-10 10:35:37,758 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 [2024-11-10 10:35:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:37,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:38,152 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 38 treesize of output 34 [2024-11-10 10:35:38,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:35:38,168 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 94 treesize of output 86 [2024-11-10 10:35:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:40,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119607702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:40,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:40,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-10 10:35:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809590753] [2024-11-10 10:35:40,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:40,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:35:40,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:40,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:35:40,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-10 10:35:40,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:35:40,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 1023 transitions, 21325 flow. Second operand has 23 states, 23 states have (on average 11.826086956521738) internal successors, (272), 23 states have internal predecessors, (272), 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) [2024-11-10 10:35:40,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:40,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:35:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:44,662 INFO L124 PetriNetUnfolderBase]: 9665/15292 cut-off events. [2024-11-10 10:35:44,662 INFO L125 PetriNetUnfolderBase]: For 281053/281665 co-relation queries the response was YES. [2024-11-10 10:35:44,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111524 conditions, 15292 events. 9665/15292 cut-off events. For 281053/281665 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 109988 event pairs, 981 based on Foata normal form. 69/15216 useless extension candidates. Maximal degree in co-relation 111434. Up to 10232 conditions per place. [2024-11-10 10:35:44,845 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 884 selfloop transitions, 486 changer transitions 11/1414 dead transitions. [2024-11-10 10:35:44,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 1414 transitions, 30141 flow [2024-11-10 10:35:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:35:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:35:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 401 transitions. [2024-11-10 10:35:44,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46736596736596736 [2024-11-10 10:35:44,847 INFO L175 Difference]: Start difference. First operand has 247 places, 1023 transitions, 21325 flow. Second operand 22 states and 401 transitions. [2024-11-10 10:35:44,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 1414 transitions, 30141 flow [2024-11-10 10:35:46,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1414 transitions, 29665 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-11-10 10:35:46,567 INFO L231 Difference]: Finished difference. Result has 269 places, 1267 transitions, 26772 flow [2024-11-10 10:35:46,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=20920, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=26772, PETRI_PLACES=269, PETRI_TRANSITIONS=1267} [2024-11-10 10:35:46,568 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 232 predicate places. [2024-11-10 10:35:46,568 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 1267 transitions, 26772 flow [2024-11-10 10:35:46,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.826086956521738) internal successors, (272), 23 states have internal predecessors, (272), 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) [2024-11-10 10:35:46,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:46,569 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] [2024-11-10 10:35:46,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 10:35:46,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:46,770 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:46,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash -809342588, now seen corresponding path program 5 times [2024-11-10 10:35:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:46,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138278952] [2024-11-10 10:35:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:47,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:47,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138278952] [2024-11-10 10:35:47,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138278952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:47,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178447921] [2024-11-10 10:35:47,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:35:47,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:47,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:47,282 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:47,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 10:35:47,370 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:35:47,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:47,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-10 10:35:47,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:47,424 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 [2024-11-10 10:35:47,797 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 31 treesize of output 15 [2024-11-10 10:35:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:47,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:48,260 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 38 treesize of output 34 [2024-11-10 10:35:48,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:35:48,272 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 94 treesize of output 86 [2024-11-10 10:35:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:49,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178447921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:49,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:49,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-10 10:35:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105075386] [2024-11-10 10:35:49,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:49,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 10:35:49,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 10:35:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-10 10:35:49,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-10 10:35:49,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 1267 transitions, 26772 flow. Second operand has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 26 states have internal predecessors, (306), 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) [2024-11-10 10:35:49,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:49,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-10 10:35:49,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:54,986 INFO L124 PetriNetUnfolderBase]: 10880/17254 cut-off events. [2024-11-10 10:35:54,986 INFO L125 PetriNetUnfolderBase]: For 343723/344386 co-relation queries the response was YES. [2024-11-10 10:35:55,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132946 conditions, 17254 events. 10880/17254 cut-off events. For 343723/344386 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 125375 event pairs, 1056 based on Foata normal form. 84/17186 useless extension candidates. Maximal degree in co-relation 132850. Up to 11258 conditions per place. [2024-11-10 10:35:55,372 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 910 selfloop transitions, 617 changer transitions 19/1579 dead transitions. [2024-11-10 10:35:55,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1579 transitions, 34908 flow [2024-11-10 10:35:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 10:35:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 10:35:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 493 transitions. [2024-11-10 10:35:55,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45146520146520147 [2024-11-10 10:35:55,375 INFO L175 Difference]: Start difference. First operand has 269 places, 1267 transitions, 26772 flow. Second operand 28 states and 493 transitions. [2024-11-10 10:35:55,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1579 transitions, 34908 flow [2024-11-10 10:35:58,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1579 transitions, 34079 flow, removed 411 selfloop flow, removed 3 redundant places. [2024-11-10 10:35:58,141 INFO L231 Difference]: Finished difference. Result has 304 places, 1411 transitions, 30620 flow [2024-11-10 10:35:58,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26143, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=774, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=30620, PETRI_PLACES=304, PETRI_TRANSITIONS=1411} [2024-11-10 10:35:58,143 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 267 predicate places. [2024-11-10 10:35:58,143 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 1411 transitions, 30620 flow [2024-11-10 10:35:58,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 26 states have internal predecessors, (306), 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) [2024-11-10 10:35:58,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:58,143 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] [2024-11-10 10:35:58,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-10 10:35:58,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:58,344 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:58,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash 10949286, now seen corresponding path program 6 times [2024-11-10 10:35:58,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:58,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912060914] [2024-11-10 10:35:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:58,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912060914] [2024-11-10 10:35:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912060914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:58,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190950771] [2024-11-10 10:35:58,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:35:58,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:58,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:58,809 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:58,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 10:35:58,890 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 10:35:58,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:58,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-10 10:35:58,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:58,936 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 [2024-11-10 10:35:59,260 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 [2024-11-10 10:35:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:59,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:35:59,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190950771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:59,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:59,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 25 [2024-11-10 10:35:59,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201609380] [2024-11-10 10:35:59,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:59,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 10:35:59,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 10:35:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2024-11-10 10:35:59,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-10 10:35:59,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1411 transitions, 30620 flow. Second operand has 26 states, 26 states have (on average 12.653846153846153) internal successors, (329), 26 states have internal predecessors, (329), 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) [2024-11-10 10:35:59,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:59,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-10 10:35:59,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand