./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/array-eq-trans.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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:43:13,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:43:13,536 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:43:13,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:43:13,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:43:13,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:43:13,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:43:13,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:43:13,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:43:13,588 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:43:13,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:43:13,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:43:13,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:43:13,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:43:13,591 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:43:13,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:43:13,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:43:13,591 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:43:13,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:43:13,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:43:13,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:43:13,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:43:13,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:43:13,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:43:13,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:43:13,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:43:13,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:43:13,594 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:43:13,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:43:13,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:43:13,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:43:13,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:43:13,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:43:13,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:43:13,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:43:13,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:43:13,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:43:13,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:43:13,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:43:13,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:43:13,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:43:13,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:43:13,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-11-19 01:43:13,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:43:13,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:43:13,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:43:13,804 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:43:13,805 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:43:13,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-19 01:43:14,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:43:15,136 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:43:15,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-19 01:43:15,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d756815f3/038e215ba2ef436b9e295e0d3fdf841a/FLAG1c4bc0553 [2024-11-19 01:43:15,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d756815f3/038e215ba2ef436b9e295e0d3fdf841a [2024-11-19 01:43:15,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:43:15,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:43:15,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:43:15,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:43:15,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:43:15,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b47e495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15, skipping insertion in model container [2024-11-19 01:43:15,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:43:15,330 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/array-eq-trans.wvr.c[2776,2789] [2024-11-19 01:43:15,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:43:15,343 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:43:15,361 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/array-eq-trans.wvr.c[2776,2789] [2024-11-19 01:43:15,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:43:15,376 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:43:15,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15 WrapperNode [2024-11-19 01:43:15,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:43:15,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:43:15,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:43:15,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:43:15,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,414 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 194 [2024-11-19 01:43:15,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:43:15,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:43:15,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:43:15,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:43:15,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,426 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,441 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-19 01:43:15,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:43:15,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:43:15,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:43:15,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:43:15,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (1/1) ... [2024-11-19 01:43:15,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:43:15,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:15,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:43:15,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:43:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:43:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:43:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:43:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:43:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:43:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:43:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:43:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:43:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:43:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:43:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:43:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:43:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:43:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:43:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:43:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:43:15,537 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:43:15,675 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:43:15,678 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:43:16,018 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:43:16,019 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:43:16,289 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:43:16,289 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 01:43:16,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:43:16 BoogieIcfgContainer [2024-11-19 01:43:16,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:43:16,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:43:16,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:43:16,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:43:16,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:43:15" (1/3) ... [2024-11-19 01:43:16,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4231790c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:43:16, skipping insertion in model container [2024-11-19 01:43:16,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:15" (2/3) ... [2024-11-19 01:43:16,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4231790c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:43:16, skipping insertion in model container [2024-11-19 01:43:16,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:43:16" (3/3) ... [2024-11-19 01:43:16,298 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-11-19 01:43:16,312 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:43:16,312 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:43:16,312 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:43:16,354 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:43:16,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-19 01:43:16,433 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-19 01:43:16,437 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:43:16,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 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. [2024-11-19 01:43:16,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-19 01:43:16,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-19 01:43:16,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:43:16,460 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;@61bae847, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:43:16,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:43:16,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:43:16,490 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-19 01:43:16,490 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:43:16,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:16,490 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] [2024-11-19 01:43:16,491 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)] === [2024-11-19 01:43:16,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1892444017, now seen corresponding path program 1 times [2024-11-19 01:43:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:16,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062652543] [2024-11-19 01:43:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:16,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:17,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:17,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062652543] [2024-11-19 01:43:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062652543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:17,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:43:17,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234672632] [2024-11-19 01:43:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:17,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:43:17,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:43:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:43:17,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:17,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:17,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:17,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:17,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:17,346 INFO L124 PetriNetUnfolderBase]: 1693/2288 cut-off events. [2024-11-19 01:43:17,347 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-19 01:43:17,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4716 conditions, 2288 events. 1693/2288 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 9420 event pairs, 923 based on Foata normal form. 1/1521 useless extension candidates. Maximal degree in co-relation 2641. Up to 1399 conditions per place. [2024-11-19 01:43:17,359 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 31 selfloop transitions, 2 changer transitions 26/63 dead transitions. [2024-11-19 01:43:17,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 280 flow [2024-11-19 01:43:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:43:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:43:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-19 01:43:17,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-11-19 01:43:17,371 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 4 states and 89 transitions. [2024-11-19 01:43:17,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 280 flow [2024-11-19 01:43:17,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 63 transitions, 256 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:43:17,380 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 94 flow [2024-11-19 01:43:17,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2024-11-19 01:43:17,386 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-19 01:43:17,387 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 94 flow [2024-11-19 01:43:17,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:17,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:17,387 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] [2024-11-19 01:43:17,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:43:17,388 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)] === [2024-11-19 01:43:17,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash -377412116, now seen corresponding path program 1 times [2024-11-19 01:43:17,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:17,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608892541] [2024-11-19 01:43:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:17,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:17,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608892541] [2024-11-19 01:43:17,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608892541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:17,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690049002] [2024-11-19 01:43:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:17,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:17,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:17,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:17,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:43:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:17,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:43:17,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:17,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:18,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:43:18,023 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 59 treesize of output 55 [2024-11-19 01:43:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690049002] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:18,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:43:18,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2024-11-19 01:43:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976128833] [2024-11-19 01:43:18,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:18,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:43:18,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:18,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:43:18,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:43:18,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:18,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:18,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:18,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:18,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:18,349 INFO L124 PetriNetUnfolderBase]: 1898/2559 cut-off events. [2024-11-19 01:43:18,349 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-19 01:43:18,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5378 conditions, 2559 events. 1898/2559 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10847 event pairs, 461 based on Foata normal form. 1/1901 useless extension candidates. Maximal degree in co-relation 5366. Up to 1070 conditions per place. [2024-11-19 01:43:18,358 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 50 selfloop transitions, 4 changer transitions 20/78 dead transitions. [2024-11-19 01:43:18,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 78 transitions, 340 flow [2024-11-19 01:43:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-11-19 01:43:18,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-19 01:43:18,360 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 94 flow. Second operand 5 states and 110 transitions. [2024-11-19 01:43:18,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 78 transitions, 340 flow [2024-11-19 01:43:18,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 78 transitions, 326 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 01:43:18,362 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 108 flow [2024-11-19 01:43:18,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-19 01:43:18,363 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-11-19 01:43:18,363 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 108 flow [2024-11-19 01:43:18,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:18,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:18,364 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] [2024-11-19 01:43:18,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:43:18,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:18,568 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)] === [2024-11-19 01:43:18,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1636848034, now seen corresponding path program 1 times [2024-11-19 01:43:18,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:18,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996261877] [2024-11-19 01:43:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:18,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:18,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:18,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996261877] [2024-11-19 01:43:18,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996261877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:18,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:18,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:43:18,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035526635] [2024-11-19 01:43:18,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:18,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:43:18,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:43:18,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:43:18,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:18,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:18,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:18,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:18,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:18,853 INFO L124 PetriNetUnfolderBase]: 1508/2080 cut-off events. [2024-11-19 01:43:18,853 INFO L125 PetriNetUnfolderBase]: For 523/523 co-relation queries the response was YES. [2024-11-19 01:43:18,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4544 conditions, 2080 events. 1508/2080 cut-off events. For 523/523 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8391 event pairs, 886 based on Foata normal form. 57/1580 useless extension candidates. Maximal degree in co-relation 4530. Up to 1870 conditions per place. [2024-11-19 01:43:18,861 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 32 selfloop transitions, 3 changer transitions 19/58 dead transitions. [2024-11-19 01:43:18,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 259 flow [2024-11-19 01:43:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-19 01:43:18,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-11-19 01:43:18,862 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 108 flow. Second operand 5 states and 88 transitions. [2024-11-19 01:43:18,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 259 flow [2024-11-19 01:43:18,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 252 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 01:43:18,864 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 117 flow [2024-11-19 01:43:18,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-19 01:43:18,864 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-19 01:43:18,864 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 117 flow [2024-11-19 01:43:18,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:18,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:18,864 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] [2024-11-19 01:43:18,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:43:18,865 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)] === [2024-11-19 01:43:18,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:18,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1403967229, now seen corresponding path program 1 times [2024-11-19 01:43:18,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:18,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172645147] [2024-11-19 01:43:18,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:18,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:19,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:19,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172645147] [2024-11-19 01:43:19,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172645147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:19,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509885030] [2024-11-19 01:43:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:19,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:19,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:19,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:19,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:43:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:19,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:43:19,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:19,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:19,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:43:19,309 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 59 treesize of output 55 [2024-11-19 01:43:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:19,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509885030] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:19,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:43:19,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2024-11-19 01:43:19,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648721051] [2024-11-19 01:43:19,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:19,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:43:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:43:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:43:19,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:19,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:19,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:19,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:19,728 INFO L124 PetriNetUnfolderBase]: 3090/4301 cut-off events. [2024-11-19 01:43:19,729 INFO L125 PetriNetUnfolderBase]: For 1238/1238 co-relation queries the response was YES. [2024-11-19 01:43:19,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9559 conditions, 4301 events. 3090/4301 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 20423 event pairs, 693 based on Foata normal form. 2/3334 useless extension candidates. Maximal degree in co-relation 9537. Up to 1320 conditions per place. [2024-11-19 01:43:19,746 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 70 selfloop transitions, 6 changer transitions 19/99 dead transitions. [2024-11-19 01:43:19,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 99 transitions, 475 flow [2024-11-19 01:43:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:43:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:43:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-11-19 01:43:19,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:43:19,748 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 117 flow. Second operand 7 states and 140 transitions. [2024-11-19 01:43:19,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 99 transitions, 475 flow [2024-11-19 01:43:19,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 99 transitions, 461 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 01:43:19,750 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 137 flow [2024-11-19 01:43:19,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=137, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-19 01:43:19,751 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-19 01:43:19,752 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 137 flow [2024-11-19 01:43:19,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:19,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:19,752 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:19,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:43:19,956 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,SelfDestructingSolverStorable3 [2024-11-19 01:43:19,957 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)] === [2024-11-19 01:43:19,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash -471271938, now seen corresponding path program 1 times [2024-11-19 01:43:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:19,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543492990] [2024-11-19 01:43:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:20,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:20,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543492990] [2024-11-19 01:43:20,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543492990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:20,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:20,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:43:20,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88900864] [2024-11-19 01:43:20,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:20,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:43:20,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:43:20,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:43:20,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:20,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:20,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:20,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:20,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:20,282 INFO L124 PetriNetUnfolderBase]: 2709/3833 cut-off events. [2024-11-19 01:43:20,283 INFO L125 PetriNetUnfolderBase]: For 1511/1511 co-relation queries the response was YES. [2024-11-19 01:43:20,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9057 conditions, 3833 events. 2709/3833 cut-off events. For 1511/1511 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17718 event pairs, 1951 based on Foata normal form. 88/3387 useless extension candidates. Maximal degree in co-relation 9032. Up to 3535 conditions per place. [2024-11-19 01:43:20,298 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 35 selfloop transitions, 3 changer transitions 19/61 dead transitions. [2024-11-19 01:43:20,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 305 flow [2024-11-19 01:43:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-19 01:43:20,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-19 01:43:20,300 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 137 flow. Second operand 5 states and 87 transitions. [2024-11-19 01:43:20,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 305 flow [2024-11-19 01:43:20,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 299 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 01:43:20,302 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 147 flow [2024-11-19 01:43:20,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-19 01:43:20,302 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2024-11-19 01:43:20,303 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 147 flow [2024-11-19 01:43:20,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:20,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:20,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:20,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:43:20,303 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)] === [2024-11-19 01:43:20,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash -283613148, now seen corresponding path program 1 times [2024-11-19 01:43:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859628987] [2024-11-19 01:43:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:20,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:20,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:20,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859628987] [2024-11-19 01:43:20,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859628987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:20,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555366712] [2024-11-19 01:43:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:20,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:20,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:20,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:20,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:43:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:20,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:43:20,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:20,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:20,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555366712] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:20,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:43:20,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2024-11-19 01:43:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2356102] [2024-11-19 01:43:20,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:20,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:43:20,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:43:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:43:20,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:20,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:20,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:20,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:20,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:21,109 INFO L124 PetriNetUnfolderBase]: 4258/6144 cut-off events. [2024-11-19 01:43:21,109 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-11-19 01:43:21,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14865 conditions, 6144 events. 4258/6144 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31038 event pairs, 1533 based on Foata normal form. 0/5638 useless extension candidates. Maximal degree in co-relation 14839. Up to 2546 conditions per place. [2024-11-19 01:43:21,135 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 72 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2024-11-19 01:43:21,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 445 flow [2024-11-19 01:43:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:43:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:43:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-11-19 01:43:21,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-19 01:43:21,136 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 147 flow. Second operand 7 states and 119 transitions. [2024-11-19 01:43:21,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 445 flow [2024-11-19 01:43:21,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 83 transitions, 433 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 01:43:21,139 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 167 flow [2024-11-19 01:43:21,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-11-19 01:43:21,139 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2024-11-19 01:43:21,140 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 167 flow [2024-11-19 01:43:21,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:21,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:21,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:21,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:43:21,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:21,341 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)] === [2024-11-19 01:43:21,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash 147700837, now seen corresponding path program 1 times [2024-11-19 01:43:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:21,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219721958] [2024-11-19 01:43:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:22,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219721958] [2024-11-19 01:43:22,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219721958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:22,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:22,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:43:22,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574083953] [2024-11-19 01:43:22,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:22,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:43:22,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:43:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:43:22,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:22,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 167 flow. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:22,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:22,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:22,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:22,791 INFO L124 PetriNetUnfolderBase]: 4883/7037 cut-off events. [2024-11-19 01:43:22,791 INFO L125 PetriNetUnfolderBase]: For 3650/3650 co-relation queries the response was YES. [2024-11-19 01:43:22,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18186 conditions, 7037 events. 4883/7037 cut-off events. For 3650/3650 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36787 event pairs, 1035 based on Foata normal form. 2/7036 useless extension candidates. Maximal degree in co-relation 18158. Up to 6187 conditions per place. [2024-11-19 01:43:22,817 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 75 selfloop transitions, 13 changer transitions 2/94 dead transitions. [2024-11-19 01:43:22,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 94 transitions, 502 flow [2024-11-19 01:43:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:43:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:43:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-19 01:43:22,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-19 01:43:22,819 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 167 flow. Second operand 6 states and 126 transitions. [2024-11-19 01:43:22,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 94 transitions, 502 flow [2024-11-19 01:43:22,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 496 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 01:43:22,822 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 276 flow [2024-11-19 01:43:22,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-11-19 01:43:22,823 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-19 01:43:22,823 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 276 flow [2024-11-19 01:43:22,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:22,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:22,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:22,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:43:22,824 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)] === [2024-11-19 01:43:22,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1704572735, now seen corresponding path program 1 times [2024-11-19 01:43:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:22,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175256729] [2024-11-19 01:43:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:22,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:22,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175256729] [2024-11-19 01:43:22,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175256729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:22,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023278850] [2024-11-19 01:43:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:22,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:22,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:22,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:22,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:43:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:23,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 01:43:23,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:23,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:23,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:43:23,176 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 43 treesize of output 39 [2024-11-19 01:43:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023278850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:23,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:23,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-19 01:43:23,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666232015] [2024-11-19 01:43:23,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:23,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:43:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:43:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:43:23,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:23,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:23,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:23,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:23,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:24,078 INFO L124 PetriNetUnfolderBase]: 8411/12220 cut-off events. [2024-11-19 01:43:24,079 INFO L125 PetriNetUnfolderBase]: For 13367/13367 co-relation queries the response was YES. [2024-11-19 01:43:24,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34852 conditions, 12220 events. 8411/12220 cut-off events. For 13367/13367 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 70141 event pairs, 5532 based on Foata normal form. 172/12384 useless extension candidates. Maximal degree in co-relation 31408. Up to 7015 conditions per place. [2024-11-19 01:43:24,131 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 88 selfloop transitions, 5 changer transitions 23/120 dead transitions. [2024-11-19 01:43:24,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 120 transitions, 822 flow [2024-11-19 01:43:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:43:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:43:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-11-19 01:43:24,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-19 01:43:24,133 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 276 flow. Second operand 7 states and 130 transitions. [2024-11-19 01:43:24,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 120 transitions, 822 flow [2024-11-19 01:43:24,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 807 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:43:24,142 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 318 flow [2024-11-19 01:43:24,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-11-19 01:43:24,142 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2024-11-19 01:43:24,143 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 318 flow [2024-11-19 01:43:24,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:24,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:24,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:24,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:43:24,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:24,344 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)] === [2024-11-19 01:43:24,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:24,344 INFO L85 PathProgramCache]: Analyzing trace with hash 127876301, now seen corresponding path program 1 times [2024-11-19 01:43:24,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:24,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104899441] [2024-11-19 01:43:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:24,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:25,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:25,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104899441] [2024-11-19 01:43:25,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104899441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:25,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169255444] [2024-11-19 01:43:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:25,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:25,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:25,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:25,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:43:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:25,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 01:43:25,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:25,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:26,492 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-11-19 01:43:26,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 236 [2024-11-19 01:43:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:31,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169255444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:31,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:31,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2024-11-19 01:43:31,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539015597] [2024-11-19 01:43:31,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:31,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 01:43:31,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 01:43:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:43:31,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:31,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 318 flow. Second operand has 22 states, 22 states have (on average 10.681818181818182) internal successors, (235), 22 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:31,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:31,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:31,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:36,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 01:43:37,907 INFO L124 PetriNetUnfolderBase]: 11472/16731 cut-off events. [2024-11-19 01:43:37,907 INFO L125 PetriNetUnfolderBase]: For 14710/14718 co-relation queries the response was YES. [2024-11-19 01:43:37,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47290 conditions, 16731 events. 11472/16731 cut-off events. For 14710/14718 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 102430 event pairs, 2095 based on Foata normal form. 18/16737 useless extension candidates. Maximal degree in co-relation 41834. Up to 8956 conditions per place. [2024-11-19 01:43:38,002 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 149 selfloop transitions, 47 changer transitions 4/204 dead transitions. [2024-11-19 01:43:38,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 204 transitions, 1287 flow [2024-11-19 01:43:38,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:43:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 01:43:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 297 transitions. [2024-11-19 01:43:38,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4640625 [2024-11-19 01:43:38,004 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 318 flow. Second operand 16 states and 297 transitions. [2024-11-19 01:43:38,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 204 transitions, 1287 flow [2024-11-19 01:43:38,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 204 transitions, 1267 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-19 01:43:38,046 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 703 flow [2024-11-19 01:43:38,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=703, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-19 01:43:38,047 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-11-19 01:43:38,047 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 703 flow [2024-11-19 01:43:38,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.681818181818182) internal successors, (235), 22 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:38,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:38,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:38,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:43:38,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:38,248 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)] === [2024-11-19 01:43:38,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1859023661, now seen corresponding path program 2 times [2024-11-19 01:43:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:38,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603787542] [2024-11-19 01:43:38,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:38,307 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:38,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:39,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603787542] [2024-11-19 01:43:39,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603787542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:39,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969753761] [2024-11-19 01:43:39,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:39,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:39,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:39,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:39,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:43:39,238 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:39,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:39,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-19 01:43:39,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:39,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:40,349 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2024-11-19 01:43:40,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 235 [2024-11-19 01:43:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:46,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969753761] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:46,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:43:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 10] total 23 [2024-11-19 01:43:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640961481] [2024-11-19 01:43:46,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:46,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:43:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:43:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:43:46,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:46,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 703 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:46,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:46,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:46,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:48,007 INFO L124 PetriNetUnfolderBase]: 11472/16701 cut-off events. [2024-11-19 01:43:48,007 INFO L125 PetriNetUnfolderBase]: For 32157/32161 co-relation queries the response was YES. [2024-11-19 01:43:48,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55181 conditions, 16701 events. 11472/16701 cut-off events. For 32157/32161 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 102109 event pairs, 3410 based on Foata normal form. 14/16707 useless extension candidates. Maximal degree in co-relation 51777. Up to 8956 conditions per place. [2024-11-19 01:43:48,100 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 95 selfloop transitions, 38 changer transitions 2/139 dead transitions. [2024-11-19 01:43:48,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 139 transitions, 1179 flow [2024-11-19 01:43:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:43:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:43:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-11-19 01:43:48,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-19 01:43:48,101 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 703 flow. Second operand 6 states and 136 transitions. [2024-11-19 01:43:48,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 139 transitions, 1179 flow [2024-11-19 01:43:48,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 1132 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-19 01:43:48,236 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 809 flow [2024-11-19 01:43:48,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-11-19 01:43:48,237 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 54 predicate places. [2024-11-19 01:43:48,238 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 809 flow [2024-11-19 01:43:48,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:48,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:48,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:48,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 01:43:48,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:48,443 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)] === [2024-11-19 01:43:48,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash -482371963, now seen corresponding path program 1 times [2024-11-19 01:43:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:48,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954419712] [2024-11-19 01:43:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:43:49,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:49,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954419712] [2024-11-19 01:43:49,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954419712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:49,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102668425] [2024-11-19 01:43:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:49,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:49,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:49,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:49,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:43:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:49,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 01:43:49,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:49,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:50,144 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-11-19 01:43:50,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 236 [2024-11-19 01:43:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:55,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102668425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:55,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:55,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2024-11-19 01:43:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312078011] [2024-11-19 01:43:55,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:55,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 01:43:55,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 01:43:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:43:55,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:43:55,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 809 flow. Second operand has 22 states, 22 states have (on average 10.681818181818182) internal successors, (235), 22 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:55,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:55,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:43:55,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:56,467 INFO L124 PetriNetUnfolderBase]: 12984/18911 cut-off events. [2024-11-19 01:43:56,467 INFO L125 PetriNetUnfolderBase]: For 41849/41849 co-relation queries the response was YES. [2024-11-19 01:43:56,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63705 conditions, 18911 events. 12984/18911 cut-off events. For 41849/41849 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 117565 event pairs, 2185 based on Foata normal form. 8/18909 useless extension candidates. Maximal degree in co-relation 60334. Up to 13372 conditions per place. [2024-11-19 01:43:56,556 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 131 selfloop transitions, 45 changer transitions 3/183 dead transitions. [2024-11-19 01:43:56,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 1695 flow [2024-11-19 01:43:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:43:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:43:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-11-19 01:43:56,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-19 01:43:56,558 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 809 flow. Second operand 12 states and 207 transitions. [2024-11-19 01:43:56,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 1695 flow [2024-11-19 01:43:56,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 183 transitions, 1594 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 01:43:56,723 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 1066 flow [2024-11-19 01:43:56,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1066, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2024-11-19 01:43:56,723 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 64 predicate places. [2024-11-19 01:43:56,723 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 1066 flow [2024-11-19 01:43:56,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.681818181818182) internal successors, (235), 22 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:56,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:56,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:56,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:43:56,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:56,924 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)] === [2024-11-19 01:43:56,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1908776229, now seen corresponding path program 2 times [2024-11-19 01:43:56,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:56,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226103173] [2024-11-19 01:43:56,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:56,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:56,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:57,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:57,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226103173] [2024-11-19 01:43:57,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226103173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:57,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571765768] [2024-11-19 01:43:57,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:57,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:57,525 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:57,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:43:57,622 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:57,622 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:57,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 01:43:57,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:43:58,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:58,673 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2024-11-19 01:43:58,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 235 [2024-11-19 01:44:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:44:05,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571765768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:05,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:05,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2024-11-19 01:44:05,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77470245] [2024-11-19 01:44:05,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:05,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 01:44:05,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 01:44:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-11-19 01:44:05,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:44:05,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 1066 flow. Second operand has 21 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:05,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:05,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:44:05,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:08,926 INFO L124 PetriNetUnfolderBase]: 20434/29883 cut-off events. [2024-11-19 01:44:08,926 INFO L125 PetriNetUnfolderBase]: For 76347/76347 co-relation queries the response was YES. [2024-11-19 01:44:09,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103653 conditions, 29883 events. 20434/29883 cut-off events. For 76347/76347 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 200258 event pairs, 4470 based on Foata normal form. 20/29899 useless extension candidates. Maximal degree in co-relation 99716. Up to 12854 conditions per place. [2024-11-19 01:44:09,150 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 235 selfloop transitions, 155 changer transitions 28/422 dead transitions. [2024-11-19 01:44:09,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 422 transitions, 3711 flow [2024-11-19 01:44:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 01:44:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 01:44:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 537 transitions. [2024-11-19 01:44:09,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46293103448275863 [2024-11-19 01:44:09,157 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 1066 flow. Second operand 29 states and 537 transitions. [2024-11-19 01:44:09,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 422 transitions, 3711 flow [2024-11-19 01:44:09,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 422 transitions, 3680 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:09,684 INFO L231 Difference]: Finished difference. Result has 139 places, 214 transitions, 2745 flow [2024-11-19 01:44:09,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2745, PETRI_PLACES=139, PETRI_TRANSITIONS=214} [2024-11-19 01:44:09,685 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 102 predicate places. [2024-11-19 01:44:09,685 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 214 transitions, 2745 flow [2024-11-19 01:44:09,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:09,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:09,685 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:09,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 01:44:09,885 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,SelfDestructingSolverStorable11 [2024-11-19 01:44:09,886 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)] === [2024-11-19 01:44:09,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash -196833306, now seen corresponding path program 2 times [2024-11-19 01:44:09,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:09,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364388533] [2024-11-19 01:44:09,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:09,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:09,925 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:09,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:44:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364388533] [2024-11-19 01:44:10,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364388533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822631673] [2024-11-19 01:44:10,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:10,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:10,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:10,927 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:10,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:44:11,044 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:11,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:11,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 01:44:11,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:44:11,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:12,195 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2024-11-19 01:44:12,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 236 [2024-11-19 01:44:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:44:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822631673] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:18,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:44:18,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 11] total 22 [2024-11-19 01:44:18,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50034585] [2024-11-19 01:44:18,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:18,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:44:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:18,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:44:18,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:44:18,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:44:18,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 214 transitions, 2745 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:18,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:18,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:44:18,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:21,627 INFO L124 PetriNetUnfolderBase]: 21215/31120 cut-off events. [2024-11-19 01:44:21,627 INFO L125 PetriNetUnfolderBase]: For 135319/135319 co-relation queries the response was YES. [2024-11-19 01:44:21,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123473 conditions, 31120 events. 21215/31120 cut-off events. For 135319/135319 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 210071 event pairs, 7329 based on Foata normal form. 2/31118 useless extension candidates. Maximal degree in co-relation 119660. Up to 27006 conditions per place. [2024-11-19 01:44:21,923 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 180 selfloop transitions, 93 changer transitions 18/295 dead transitions. [2024-11-19 01:44:21,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 295 transitions, 3910 flow [2024-11-19 01:44:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:44:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:44:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-11-19 01:44:21,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-19 01:44:21,925 INFO L175 Difference]: Start difference. First operand has 139 places, 214 transitions, 2745 flow. Second operand 8 states and 172 transitions. [2024-11-19 01:44:21,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 295 transitions, 3910 flow [2024-11-19 01:44:23,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 295 transitions, 3590 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-11-19 01:44:23,585 INFO L231 Difference]: Finished difference. Result has 143 places, 235 transitions, 3058 flow [2024-11-19 01:44:23,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3058, PETRI_PLACES=143, PETRI_TRANSITIONS=235} [2024-11-19 01:44:23,586 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 106 predicate places. [2024-11-19 01:44:23,586 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 235 transitions, 3058 flow [2024-11-19 01:44:23,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:23,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:23,586 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:23,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 01:44:23,787 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,SelfDestructingSolverStorable12 [2024-11-19 01:44:23,787 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)] === [2024-11-19 01:44:23,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash -168272084, now seen corresponding path program 3 times [2024-11-19 01:44:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:23,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926753394] [2024-11-19 01:44:23,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:23,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:23,813 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:44:23,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:44:24,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926753394] [2024-11-19 01:44:24,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926753394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809209579] [2024-11-19 01:44:24,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:24,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:24,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:24,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:24,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:44:24,650 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:44:24,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:24,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 01:44:24,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:44:25,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:25,598 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-11-19 01:44:25,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 237 [2024-11-19 01:44:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:44:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809209579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:34,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:34,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 7] total 22 [2024-11-19 01:44:34,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069086197] [2024-11-19 01:44:34,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:34,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:44:34,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:34,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:44:34,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:44:34,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:44:34,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 235 transitions, 3058 flow. Second operand has 23 states, 23 states have (on average 10.043478260869565) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:34,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:34,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:44:34,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:38,612 INFO L124 PetriNetUnfolderBase]: 23758/35041 cut-off events. [2024-11-19 01:44:38,612 INFO L125 PetriNetUnfolderBase]: For 142626/142626 co-relation queries the response was YES. [2024-11-19 01:44:38,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138082 conditions, 35041 events. 23758/35041 cut-off events. For 142626/142626 co-relation queries the response was YES. Maximal size of possible extension queue 1803. Compared 242738 event pairs, 7382 based on Foata normal form. 18/35055 useless extension candidates. Maximal degree in co-relation 133756. Up to 27565 conditions per place. [2024-11-19 01:44:38,928 INFO L140 encePairwiseOnDemand]: 23/40 looper letters, 229 selfloop transitions, 135 changer transitions 78/446 dead transitions. [2024-11-19 01:44:38,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 446 transitions, 5102 flow [2024-11-19 01:44:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:44:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:44:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 443 transitions. [2024-11-19 01:44:38,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46145833333333336 [2024-11-19 01:44:38,930 INFO L175 Difference]: Start difference. First operand has 143 places, 235 transitions, 3058 flow. Second operand 24 states and 443 transitions. [2024-11-19 01:44:38,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 446 transitions, 5102 flow [2024-11-19 01:44:40,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 446 transitions, 5011 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 01:44:40,742 INFO L231 Difference]: Finished difference. Result has 180 places, 261 transitions, 3739 flow [2024-11-19 01:44:40,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3739, PETRI_PLACES=180, PETRI_TRANSITIONS=261} [2024-11-19 01:44:40,743 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 143 predicate places. [2024-11-19 01:44:40,743 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 261 transitions, 3739 flow [2024-11-19 01:44:40,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.043478260869565) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:40,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:40,743 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:40,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 01:44:40,943 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,SelfDestructingSolverStorable13 [2024-11-19 01:44:40,944 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)] === [2024-11-19 01:44:40,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:40,944 INFO L85 PathProgramCache]: Analyzing trace with hash 796958896, now seen corresponding path program 4 times [2024-11-19 01:44:40,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:40,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522718154] [2024-11-19 01:44:40,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:40,964 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:40,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:44:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522718154] [2024-11-19 01:44:41,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522718154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640236465] [2024-11-19 01:44:41,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:41,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:41,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:41,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:44:41,825 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:41,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:41,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 01:44:41,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:44:42,269 INFO L311 TraceCheckSpWp]: Computing backward predicates...