./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:51:41,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:51:41,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:51:41,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:51:41,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:51:41,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:51:41,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:51:41,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:51:41,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:51:41,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:51:41,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:51:41,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:51:41,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:51:41,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:51:41,789 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:51:41,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:51:41,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:51:41,790 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:51:41,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:51:41,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:51:41,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:51:41,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:51:41,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:51:41,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:51:41,792 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:51:41,793 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:51:41,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:51:41,793 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:51:41,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:51:41,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:51:41,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:51:41,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:51:41,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:51:41,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:51:41,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:51:41,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:51:41,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:51:41,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:51:41,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:51:41,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:51:41,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:51:41,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:51:41,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-11-22 13:51:42,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:51:42,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:51:42,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:51:42,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:51:42,113 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:51:42,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-22 13:51:43,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:51:43,699 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:51:43,700 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-22 13:51:43,708 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4ca231e/59f3bb7b59ca4174b7654eea1ba851b8/FLAG5d0183ed4 [2024-11-22 13:51:44,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4ca231e/59f3bb7b59ca4174b7654eea1ba851b8 [2024-11-22 13:51:44,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:51:44,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:51:44,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:51:44,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:51:44,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:51:44,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af96051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44, skipping insertion in model container [2024-11-22 13:51:44,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:51:44,313 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2024-11-22 13:51:44,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:51:44,330 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:51:44,350 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2024-11-22 13:51:44,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:51:44,374 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:51:44,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44 WrapperNode [2024-11-22 13:51:44,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:51:44,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:51:44,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:51:44,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:51:44,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,418 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 159 [2024-11-22 13:51:44,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:51:44,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:51:44,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:51:44,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:51:44,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,446 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-22 13:51:44,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:51:44,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:51:44,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:51:44,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:51:44,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (1/1) ... [2024-11-22 13:51:44,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:51:44,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:44,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:51:44,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:51:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:51:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:51:44,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:51:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:51:44,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:51:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:51:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:51:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:51:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:51:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:51:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:51:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:51:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:51:44,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:51:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:51:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:51:44,557 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:51:44,723 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:51:44,725 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:51:45,039 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:51:45,039 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:51:45,263 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:51:45,265 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 13:51:45,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:51:45 BoogieIcfgContainer [2024-11-22 13:51:45,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:51:45,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:51:45,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:51:45,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:51:45,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:51:44" (1/3) ... [2024-11-22 13:51:45,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@954f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:51:45, skipping insertion in model container [2024-11-22 13:51:45,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:44" (2/3) ... [2024-11-22 13:51:45,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@954f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:51:45, skipping insertion in model container [2024-11-22 13:51:45,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:51:45" (3/3) ... [2024-11-22 13:51:45,276 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-11-22 13:51:45,288 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:51:45,288 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:51:45,289 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:51:45,334 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:51:45,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-22 13:51:45,412 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-22 13:51:45,413 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:51:45,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-22 13:51:45,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-22 13:51:45,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-22 13:51:45,428 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:51:45,435 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;@7e721908, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:51:45,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:51:45,449 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:51:45,452 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-22 13:51:45,452 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:51:45,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:45,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:51:45,453 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:45,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:45,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2097850719, now seen corresponding path program 1 times [2024-11-22 13:51:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:45,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124742668] [2024-11-22 13:51:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:45,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:45,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:45,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124742668] [2024-11-22 13:51:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124742668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:51:45,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520265753] [2024-11-22 13:51:45,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:45,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:51:45,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:51:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:51:45,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-22 13:51:45,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:45,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:45,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-22 13:51:45,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:45,856 INFO L124 PetriNetUnfolderBase]: 108/208 cut-off events. [2024-11-22 13:51:45,857 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-22 13:51:45,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 208 events. 108/208 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 678 event pairs, 83 based on Foata normal form. 13/202 useless extension candidates. Maximal degree in co-relation 366. Up to 178 conditions per place. [2024-11-22 13:51:45,863 INFO L140 encePairwiseOnDemand]: 28/29 looper letters, 20 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2024-11-22 13:51:45,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 102 flow [2024-11-22 13:51:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:51:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 13:51:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2024-11-22 13:51:45,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2024-11-22 13:51:45,877 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 2 states and 35 transitions. [2024-11-22 13:51:45,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 102 flow [2024-11-22 13:51:45,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:51:45,884 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2024-11-22 13:51:45,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-11-22 13:51:45,891 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-11-22 13:51:45,891 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2024-11-22 13:51:45,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:45,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:45,891 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] [2024-11-22 13:51:45,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:51:45,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:45,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash 702721458, now seen corresponding path program 1 times [2024-11-22 13:51:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:45,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44946435] [2024-11-22 13:51:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:45,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:46,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:46,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44946435] [2024-11-22 13:51:46,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44946435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:46,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:46,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:51:46,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314955907] [2024-11-22 13:51:46,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:46,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:51:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:51:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:51:46,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-22 13:51:46,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:46,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:46,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-22 13:51:46,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:46,218 INFO L124 PetriNetUnfolderBase]: 116/226 cut-off events. [2024-11-22 13:51:46,219 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:51:46,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 226 events. 116/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 702 event pairs, 34 based on Foata normal form. 3/216 useless extension candidates. Maximal degree in co-relation 427. Up to 159 conditions per place. [2024-11-22 13:51:46,223 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 24 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-22 13:51:46,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 123 flow [2024-11-22 13:51:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:51:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:51:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-22 13:51:46,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-22 13:51:46,227 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 3 states and 49 transitions. [2024-11-22 13:51:46,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 123 flow [2024-11-22 13:51:46,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 123 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:51:46,230 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 73 flow [2024-11-22 13:51:46,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-11-22 13:51:46,232 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2024-11-22 13:51:46,233 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 73 flow [2024-11-22 13:51:46,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:46,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:46,233 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] [2024-11-22 13:51:46,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:51:46,234 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:46,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1414017828, now seen corresponding path program 2 times [2024-11-22 13:51:46,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:46,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058509088] [2024-11-22 13:51:46,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:46,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:46,274 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:51:46,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:46,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:46,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058509088] [2024-11-22 13:51:46,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058509088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:46,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:46,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:51:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915822818] [2024-11-22 13:51:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:46,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:51:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:51:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:51:46,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-22 13:51:46,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:46,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:46,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-22 13:51:46,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:46,540 INFO L124 PetriNetUnfolderBase]: 129/267 cut-off events. [2024-11-22 13:51:46,541 INFO L125 PetriNetUnfolderBase]: For 47/49 co-relation queries the response was YES. [2024-11-22 13:51:46,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 267 events. 129/267 cut-off events. For 47/49 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 934 event pairs, 93 based on Foata normal form. 11/264 useless extension candidates. Maximal degree in co-relation 565. Up to 193 conditions per place. [2024-11-22 13:51:46,544 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 21 selfloop transitions, 2 changer transitions 8/36 dead transitions. [2024-11-22 13:51:46,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 155 flow [2024-11-22 13:51:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:51:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:51:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-22 13:51:46,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-11-22 13:51:46,546 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 73 flow. Second operand 4 states and 59 transitions. [2024-11-22 13:51:46,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 155 flow [2024-11-22 13:51:46,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:51:46,547 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 86 flow [2024-11-22 13:51:46,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-22 13:51:46,550 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-22 13:51:46,551 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 86 flow [2024-11-22 13:51:46,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:46,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:46,551 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] [2024-11-22 13:51:46,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:51:46,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:46,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash 453692084, now seen corresponding path program 1 times [2024-11-22 13:51:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:46,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016544513] [2024-11-22 13:51:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:46,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:47,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:47,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016544513] [2024-11-22 13:51:47,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016544513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:47,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:47,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:47,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624782120] [2024-11-22 13:51:47,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:47,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:47,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:47,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:47,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 13:51:47,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 86 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:47,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:47,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 13:51:47,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:47,568 INFO L124 PetriNetUnfolderBase]: 171/334 cut-off events. [2024-11-22 13:51:47,568 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-22 13:51:47,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 334 events. 171/334 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1255 event pairs, 10 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 727. Up to 199 conditions per place. [2024-11-22 13:51:47,585 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 42 selfloop transitions, 13 changer transitions 5/64 dead transitions. [2024-11-22 13:51:47,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 64 transitions, 299 flow [2024-11-22 13:51:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-11-22 13:51:47,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-11-22 13:51:47,591 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 86 flow. Second operand 10 states and 120 transitions. [2024-11-22 13:51:47,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 64 transitions, 299 flow [2024-11-22 13:51:47,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 64 transitions, 289 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 13:51:47,595 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 152 flow [2024-11-22 13:51:47,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-22 13:51:47,598 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-11-22 13:51:47,598 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 152 flow [2024-11-22 13:51:47,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:47,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:47,599 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] [2024-11-22 13:51:47,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:51:47,599 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:47,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash -563805100, now seen corresponding path program 2 times [2024-11-22 13:51:47,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:47,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406290496] [2024-11-22 13:51:47,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:47,625 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:51:47,626 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406290496] [2024-11-22 13:51:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406290496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:48,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:48,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:48,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751934847] [2024-11-22 13:51:48,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:48,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:48,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:48,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:48,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:48,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 13:51:48,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:48,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:48,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 13:51:48,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:48,252 INFO L124 PetriNetUnfolderBase]: 193/388 cut-off events. [2024-11-22 13:51:48,254 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-11-22 13:51:48,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 388 events. 193/388 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1629 event pairs, 24 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1051. Up to 226 conditions per place. [2024-11-22 13:51:48,258 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 44 selfloop transitions, 20 changer transitions 5/73 dead transitions. [2024-11-22 13:51:48,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 428 flow [2024-11-22 13:51:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-11-22 13:51:48,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4241379310344828 [2024-11-22 13:51:48,262 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 152 flow. Second operand 10 states and 123 transitions. [2024-11-22 13:51:48,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 428 flow [2024-11-22 13:51:48,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 419 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 13:51:48,267 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 274 flow [2024-11-22 13:51:48,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-11-22 13:51:48,268 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-11-22 13:51:48,269 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 274 flow [2024-11-22 13:51:48,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:48,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:48,270 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] [2024-11-22 13:51:48,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:51:48,270 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:48,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash 783150618, now seen corresponding path program 3 times [2024-11-22 13:51:48,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:48,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454257106] [2024-11-22 13:51:48,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:51:48,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:48,308 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:51:48,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:48,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:48,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454257106] [2024-11-22 13:51:48,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454257106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:48,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:48,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:48,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713518228] [2024-11-22 13:51:48,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:48,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:48,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:48,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:48,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:48,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 13:51:48,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:48,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:48,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 13:51:48,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:49,026 INFO L124 PetriNetUnfolderBase]: 205/428 cut-off events. [2024-11-22 13:51:49,026 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-11-22 13:51:49,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 428 events. 205/428 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1932 event pairs, 9 based on Foata normal form. 1/429 useless extension candidates. Maximal degree in co-relation 1349. Up to 213 conditions per place. [2024-11-22 13:51:49,031 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 48 selfloop transitions, 26 changer transitions 5/83 dead transitions. [2024-11-22 13:51:49,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 569 flow [2024-11-22 13:51:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:51:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:51:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-11-22 13:51:49,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4169278996865204 [2024-11-22 13:51:49,035 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 274 flow. Second operand 11 states and 133 transitions. [2024-11-22 13:51:49,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 569 flow [2024-11-22 13:51:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 546 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-22 13:51:49,052 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 349 flow [2024-11-22 13:51:49,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=349, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-11-22 13:51:49,053 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-11-22 13:51:49,053 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 349 flow [2024-11-22 13:51:49,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:49,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:49,054 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] [2024-11-22 13:51:49,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:51:49,054 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:49,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -496111328, now seen corresponding path program 4 times [2024-11-22 13:51:49,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:49,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598051930] [2024-11-22 13:51:49,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:51:49,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:49,084 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:51:49,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598051930] [2024-11-22 13:51:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598051930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:49,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303013132] [2024-11-22 13:51:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:49,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:49,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-22 13:51:49,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 349 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:49,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:49,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-22 13:51:49,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:49,688 INFO L124 PetriNetUnfolderBase]: 233/477 cut-off events. [2024-11-22 13:51:49,688 INFO L125 PetriNetUnfolderBase]: For 1011/1011 co-relation queries the response was YES. [2024-11-22 13:51:49,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 477 events. 233/477 cut-off events. For 1011/1011 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2176 event pairs, 38 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 1626. Up to 295 conditions per place. [2024-11-22 13:51:49,693 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 54 selfloop transitions, 23 changer transitions 5/85 dead transitions. [2024-11-22 13:51:49,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 662 flow [2024-11-22 13:51:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-11-22 13:51:49,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-11-22 13:51:49,695 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 349 flow. Second operand 10 states and 118 transitions. [2024-11-22 13:51:49,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 662 flow [2024-11-22 13:51:49,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 599 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-22 13:51:49,700 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 404 flow [2024-11-22 13:51:49,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=404, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-11-22 13:51:49,701 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-11-22 13:51:49,701 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 404 flow [2024-11-22 13:51:49,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:49,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:49,702 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] [2024-11-22 13:51:49,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:51:49,702 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:49,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1358592218, now seen corresponding path program 5 times [2024-11-22 13:51:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520291394] [2024-11-22 13:51:49,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:51:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:49,722 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:51:49,722 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:50,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:50,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520291394] [2024-11-22 13:51:50,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520291394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:50,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:50,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:50,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72701134] [2024-11-22 13:51:50,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:50,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:50,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:50,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 13:51:50,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 404 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:50,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:50,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 13:51:50,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:50,308 INFO L124 PetriNetUnfolderBase]: 218/474 cut-off events. [2024-11-22 13:51:50,309 INFO L125 PetriNetUnfolderBase]: For 1018/1018 co-relation queries the response was YES. [2024-11-22 13:51:50,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 474 events. 218/474 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2267 event pairs, 23 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 1656. Up to 287 conditions per place. [2024-11-22 13:51:50,313 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 55 selfloop transitions, 23 changer transitions 5/87 dead transitions. [2024-11-22 13:51:50,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 695 flow [2024-11-22 13:51:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:50,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-11-22 13:51:50,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2024-11-22 13:51:50,315 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 404 flow. Second operand 10 states and 124 transitions. [2024-11-22 13:51:50,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 695 flow [2024-11-22 13:51:50,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 654 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-22 13:51:50,320 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 450 flow [2024-11-22 13:51:50,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-11-22 13:51:50,321 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-11-22 13:51:50,321 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 450 flow [2024-11-22 13:51:50,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:50,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:50,322 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] [2024-11-22 13:51:50,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:51:50,322 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:50,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:50,322 INFO L85 PathProgramCache]: Analyzing trace with hash 75713766, now seen corresponding path program 6 times [2024-11-22 13:51:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333473387] [2024-11-22 13:51:50,323 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:51:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:50,338 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:51:50,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:50,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:50,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333473387] [2024-11-22 13:51:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333473387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:50,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:50,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706610314] [2024-11-22 13:51:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:50,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:50,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 13:51:50,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:50,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:50,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 13:51:50,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:50,862 INFO L124 PetriNetUnfolderBase]: 214/461 cut-off events. [2024-11-22 13:51:50,862 INFO L125 PetriNetUnfolderBase]: For 1502/1510 co-relation queries the response was YES. [2024-11-22 13:51:50,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 461 events. 214/461 cut-off events. For 1502/1510 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2181 event pairs, 23 based on Foata normal form. 9/470 useless extension candidates. Maximal degree in co-relation 1730. Up to 291 conditions per place. [2024-11-22 13:51:50,867 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 49 selfloop transitions, 22 changer transitions 8/83 dead transitions. [2024-11-22 13:51:50,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 711 flow [2024-11-22 13:51:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-11-22 13:51:50,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-11-22 13:51:50,868 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 450 flow. Second operand 10 states and 119 transitions. [2024-11-22 13:51:50,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 711 flow [2024-11-22 13:51:50,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 654 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-22 13:51:50,875 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 446 flow [2024-11-22 13:51:50,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=446, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-22 13:51:50,878 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-11-22 13:51:50,878 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 446 flow [2024-11-22 13:51:50,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:50,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:50,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:51:50,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:51:50,879 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:50,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1376393114, now seen corresponding path program 7 times [2024-11-22 13:51:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396374218] [2024-11-22 13:51:50,880 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:51:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:51,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396374218] [2024-11-22 13:51:51,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396374218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:51,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:51,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897692046] [2024-11-22 13:51:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:51,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:51,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 13:51:51,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:51,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:51,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 13:51:51,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:51,499 INFO L124 PetriNetUnfolderBase]: 223/488 cut-off events. [2024-11-22 13:51:51,499 INFO L125 PetriNetUnfolderBase]: For 1662/1674 co-relation queries the response was YES. [2024-11-22 13:51:51,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 488 events. 223/488 cut-off events. For 1662/1674 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2370 event pairs, 34 based on Foata normal form. 3/491 useless extension candidates. Maximal degree in co-relation 1827. Up to 297 conditions per place. [2024-11-22 13:51:51,504 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 58 selfloop transitions, 23 changer transitions 5/90 dead transitions. [2024-11-22 13:51:51,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 786 flow [2024-11-22 13:51:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-11-22 13:51:51,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43448275862068964 [2024-11-22 13:51:51,505 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 446 flow. Second operand 10 states and 126 transitions. [2024-11-22 13:51:51,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 786 flow [2024-11-22 13:51:51,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 732 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-22 13:51:51,512 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 489 flow [2024-11-22 13:51:51,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=489, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-11-22 13:51:51,513 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-11-22 13:51:51,513 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 489 flow [2024-11-22 13:51:51,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:51,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:51,514 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] [2024-11-22 13:51:51,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:51:51,514 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:51,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1634603250, now seen corresponding path program 8 times [2024-11-22 13:51:51,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:51,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020339567] [2024-11-22 13:51:51,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:51,529 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:51:51,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:51,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:51,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020339567] [2024-11-22 13:51:51,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020339567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:51,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885305663] [2024-11-22 13:51:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:51,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:51,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 13:51:51,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 489 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:51,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:51,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 13:51:51,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:52,024 INFO L124 PetriNetUnfolderBase]: 219/475 cut-off events. [2024-11-22 13:51:52,025 INFO L125 PetriNetUnfolderBase]: For 2336/2362 co-relation queries the response was YES. [2024-11-22 13:51:52,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 475 events. 219/475 cut-off events. For 2336/2362 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2286 event pairs, 34 based on Foata normal form. 11/486 useless extension candidates. Maximal degree in co-relation 1891. Up to 301 conditions per place. [2024-11-22 13:51:52,031 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 52 selfloop transitions, 22 changer transitions 8/86 dead transitions. [2024-11-22 13:51:52,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 791 flow [2024-11-22 13:51:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-11-22 13:51:52,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-11-22 13:51:52,032 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 489 flow. Second operand 10 states and 121 transitions. [2024-11-22 13:51:52,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 791 flow [2024-11-22 13:51:52,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 724 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-22 13:51:52,040 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 477 flow [2024-11-22 13:51:52,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-22 13:51:52,041 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-11-22 13:51:52,041 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 477 flow [2024-11-22 13:51:52,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:52,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:52,042 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] [2024-11-22 13:51:52,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:51:52,042 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:52,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash 744096290, now seen corresponding path program 9 times [2024-11-22 13:51:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156044869] [2024-11-22 13:51:52,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:51:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:52,056 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:51:52,056 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:52,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:52,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156044869] [2024-11-22 13:51:52,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156044869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:52,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:52,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:52,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165788734] [2024-11-22 13:51:52,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:52,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:52,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:52,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:52,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:52,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 13:51:52,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 477 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:52,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:52,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 13:51:52,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:52,605 INFO L124 PetriNetUnfolderBase]: 231/503 cut-off events. [2024-11-22 13:51:52,605 INFO L125 PetriNetUnfolderBase]: For 2568/2592 co-relation queries the response was YES. [2024-11-22 13:51:52,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 503 events. 231/503 cut-off events. For 2568/2592 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2429 event pairs, 40 based on Foata normal form. 5/507 useless extension candidates. Maximal degree in co-relation 1997. Up to 307 conditions per place. [2024-11-22 13:51:52,611 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 61 selfloop transitions, 22 changer transitions 5/92 dead transitions. [2024-11-22 13:51:52,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 840 flow [2024-11-22 13:51:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-11-22 13:51:52,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-11-22 13:51:52,612 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 477 flow. Second operand 10 states and 127 transitions. [2024-11-22 13:51:52,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 840 flow [2024-11-22 13:51:52,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 784 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-22 13:51:52,620 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 526 flow [2024-11-22 13:51:52,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2024-11-22 13:51:52,621 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-11-22 13:51:52,621 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 526 flow [2024-11-22 13:51:52,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:52,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:52,621 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] [2024-11-22 13:51:52,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:51:52,622 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:52,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:52,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2038669252, now seen corresponding path program 10 times [2024-11-22 13:51:52,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:52,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528168228] [2024-11-22 13:51:52,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:51:52,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:52,638 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:51:52,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528168228] [2024-11-22 13:51:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528168228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:52,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:51:52,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:51:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515572844] [2024-11-22 13:51:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:52,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:51:52,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:52,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:51:52,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:51:52,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-22 13:51:52,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 526 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:52,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:52,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-22 13:51:52,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:53,142 INFO L124 PetriNetUnfolderBase]: 256/535 cut-off events. [2024-11-22 13:51:53,143 INFO L125 PetriNetUnfolderBase]: For 3605/3643 co-relation queries the response was YES. [2024-11-22 13:51:53,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 535 events. 256/535 cut-off events. For 3605/3643 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2535 event pairs, 50 based on Foata normal form. 13/548 useless extension candidates. Maximal degree in co-relation 2215. Up to 339 conditions per place. [2024-11-22 13:51:53,147 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 61 selfloop transitions, 22 changer transitions 8/94 dead transitions. [2024-11-22 13:51:53,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 868 flow [2024-11-22 13:51:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:51:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:51:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-11-22 13:51:53,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-11-22 13:51:53,149 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 526 flow. Second operand 10 states and 120 transitions. [2024-11-22 13:51:53,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 868 flow [2024-11-22 13:51:53,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 793 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-22 13:51:53,158 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 522 flow [2024-11-22 13:51:53,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=522, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2024-11-22 13:51:53,159 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-11-22 13:51:53,159 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 522 flow [2024-11-22 13:51:53,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:53,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:53,160 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] [2024-11-22 13:51:53,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:51:53,160 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:53,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2074282100, now seen corresponding path program 1 times [2024-11-22 13:51:53,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:53,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981004868] [2024-11-22 13:51:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:53,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981004868] [2024-11-22 13:51:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981004868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23130978] [2024-11-22 13:51:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:53,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:53,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:53,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:51:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:53,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:51:53,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:53,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:53,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23130978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:51:53,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:51:53,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-22 13:51:53,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183741321] [2024-11-22 13:51:53,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:51:53,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:51:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:51:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:51:53,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-22 13:51:53,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 522 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:53,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:53,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-22 13:51:53,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:53,761 INFO L124 PetriNetUnfolderBase]: 367/864 cut-off events. [2024-11-22 13:51:53,761 INFO L125 PetriNetUnfolderBase]: For 6401/6451 co-relation queries the response was YES. [2024-11-22 13:51:53,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3702 conditions, 864 events. 367/864 cut-off events. For 6401/6451 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5183 event pairs, 172 based on Foata normal form. 38/900 useless extension candidates. Maximal degree in co-relation 3671. Up to 379 conditions per place. [2024-11-22 13:51:53,769 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 110 selfloop transitions, 5 changer transitions 10/130 dead transitions. [2024-11-22 13:51:53,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 130 transitions, 1272 flow [2024-11-22 13:51:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:51:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:51:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-11-22 13:51:53,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-11-22 13:51:53,771 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 522 flow. Second operand 6 states and 89 transitions. [2024-11-22 13:51:53,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 130 transitions, 1272 flow [2024-11-22 13:51:53,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 130 transitions, 1165 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-22 13:51:53,785 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 517 flow [2024-11-22 13:51:53,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2024-11-22 13:51:53,786 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-11-22 13:51:53,787 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 517 flow [2024-11-22 13:51:53,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:53,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:53,787 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] [2024-11-22 13:51:53,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:51:53,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 13:51:53,991 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:53,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1545213638, now seen corresponding path program 2 times [2024-11-22 13:51:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:53,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021504762] [2024-11-22 13:51:53,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:54,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:51:54,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:54,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:54,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021504762] [2024-11-22 13:51:54,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021504762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:54,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229916620] [2024-11-22 13:51:54,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:51:54,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:54,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:54,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:54,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:51:54,538 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:51:54,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:54,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 13:51:54,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:54,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:51:54,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:51:54,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:51:54,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-22 13:51:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:54,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:55,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2024-11-22 13:51:55,384 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:51:55,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 152 [2024-11-22 13:51:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:55,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229916620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:51:55,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:51:55,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-22 13:51:55,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666554700] [2024-11-22 13:51:55,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:51:55,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 13:51:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:55,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 13:51:55,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:51:55,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-22 13:51:55,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 517 flow. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:55,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:55,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-22 13:51:55,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:57,180 INFO L124 PetriNetUnfolderBase]: 1040/2192 cut-off events. [2024-11-22 13:51:57,181 INFO L125 PetriNetUnfolderBase]: For 15573/15575 co-relation queries the response was YES. [2024-11-22 13:51:57,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8932 conditions, 2192 events. 1040/2192 cut-off events. For 15573/15575 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13961 event pairs, 234 based on Foata normal form. 40/2232 useless extension candidates. Maximal degree in co-relation 8899. Up to 417 conditions per place. [2024-11-22 13:51:57,199 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 216 selfloop transitions, 69 changer transitions 0/288 dead transitions. [2024-11-22 13:51:57,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 288 transitions, 2559 flow [2024-11-22 13:51:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 13:51:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-22 13:51:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 301 transitions. [2024-11-22 13:51:57,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-11-22 13:51:57,201 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 517 flow. Second operand 21 states and 301 transitions. [2024-11-22 13:51:57,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 288 transitions, 2559 flow [2024-11-22 13:51:57,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 288 transitions, 2496 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-22 13:51:57,233 INFO L231 Difference]: Finished difference. Result has 118 places, 128 transitions, 1263 flow [2024-11-22 13:51:57,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1263, PETRI_PLACES=118, PETRI_TRANSITIONS=128} [2024-11-22 13:51:57,234 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-11-22 13:51:57,235 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 128 transitions, 1263 flow [2024-11-22 13:51:57,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:57,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:57,235 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:51:57,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:51:57,439 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,SelfDestructingSolverStorable14 [2024-11-22 13:51:57,440 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:57,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash 937965248, now seen corresponding path program 1 times [2024-11-22 13:51:57,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:57,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357433215] [2024-11-22 13:51:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:57,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:57,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357433215] [2024-11-22 13:51:57,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357433215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:57,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010162977] [2024-11-22 13:51:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:51:57,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:57,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:57,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:57,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:51:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:51:57,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:51:57,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:51:57,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:51:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010162977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:51:57,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:51:57,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-22 13:51:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357703914] [2024-11-22 13:51:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:51:57,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:51:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:51:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:51:57,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-22 13:51:57,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 128 transitions, 1263 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) [2024-11-22 13:51:57,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:57,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-22 13:51:57,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:51:58,073 INFO L124 PetriNetUnfolderBase]: 964/2260 cut-off events. [2024-11-22 13:51:58,073 INFO L125 PetriNetUnfolderBase]: For 26297/26476 co-relation queries the response was YES. [2024-11-22 13:51:58,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10556 conditions, 2260 events. 964/2260 cut-off events. For 26297/26476 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15521 event pairs, 265 based on Foata normal form. 126/2374 useless extension candidates. Maximal degree in co-relation 10513. Up to 928 conditions per place. [2024-11-22 13:51:58,090 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 95 selfloop transitions, 26 changer transitions 27/159 dead transitions. [2024-11-22 13:51:58,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 159 transitions, 1795 flow [2024-11-22 13:51:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:51:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:51:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-22 13:51:58,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-11-22 13:51:58,092 INFO L175 Difference]: Start difference. First operand has 118 places, 128 transitions, 1263 flow. Second operand 4 states and 78 transitions. [2024-11-22 13:51:58,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 159 transitions, 1795 flow [2024-11-22 13:51:58,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 159 transitions, 1441 flow, removed 165 selfloop flow, removed 7 redundant places. [2024-11-22 13:51:58,152 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 916 flow [2024-11-22 13:51:58,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=916, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-11-22 13:51:58,153 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-11-22 13:51:58,153 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 916 flow [2024-11-22 13:51:58,153 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) [2024-11-22 13:51:58,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:51:58,153 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] [2024-11-22 13:51:58,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:51:58,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:58,354 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:51:58,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:51:58,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1933422350, now seen corresponding path program 3 times [2024-11-22 13:51:58,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:51:58,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461293354] [2024-11-22 13:51:58,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:51:58,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:51:58,373 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:51:58,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:58,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:51:58,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461293354] [2024-11-22 13:51:58,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461293354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:51:58,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647505189] [2024-11-22 13:51:58,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:51:58,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:51:58,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:51:58,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:51:58,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:51:58,838 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:51:58,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:51:58,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 13:51:58,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:51:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:59,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:51:59,183 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:51:59,183 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 25 treesize of output 12 [2024-11-22 13:51:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:51:59,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647505189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:51:59,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:51:59,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-22 13:51:59,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163400332] [2024-11-22 13:51:59,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:51:59,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 13:51:59,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:51:59,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 13:51:59,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:51:59,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-22 13:51:59,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 916 flow. Second operand has 22 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:51:59,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:51:59,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-22 13:51:59,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:00,816 INFO L124 PetriNetUnfolderBase]: 1771/3416 cut-off events. [2024-11-22 13:52:00,817 INFO L125 PetriNetUnfolderBase]: For 20956/20956 co-relation queries the response was YES. [2024-11-22 13:52:00,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13785 conditions, 3416 events. 1771/3416 cut-off events. For 20956/20956 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20874 event pairs, 261 based on Foata normal form. 11/3387 useless extension candidates. Maximal degree in co-relation 13742. Up to 942 conditions per place. [2024-11-22 13:52:00,858 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 244 selfloop transitions, 76 changer transitions 0/323 dead transitions. [2024-11-22 13:52:00,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 323 transitions, 2918 flow [2024-11-22 13:52:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 13:52:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 13:52:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 333 transitions. [2024-11-22 13:52:00,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47844827586206895 [2024-11-22 13:52:00,862 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 916 flow. Second operand 24 states and 333 transitions. [2024-11-22 13:52:00,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 323 transitions, 2918 flow [2024-11-22 13:52:00,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 323 transitions, 2559 flow, removed 165 selfloop flow, removed 16 redundant places. [2024-11-22 13:52:00,926 INFO L231 Difference]: Finished difference. Result has 115 places, 147 transitions, 1378 flow [2024-11-22 13:52:00,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1378, PETRI_PLACES=115, PETRI_TRANSITIONS=147} [2024-11-22 13:52:00,927 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-11-22 13:52:00,927 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 147 transitions, 1378 flow [2024-11-22 13:52:00,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:00,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:00,928 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:00,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:52:01,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 13:52:01,133 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:52:01,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:01,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1285908522, now seen corresponding path program 4 times [2024-11-22 13:52:01,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:01,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502507502] [2024-11-22 13:52:01,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:52:01,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:01,150 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:52:01,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 13:52:01,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502507502] [2024-11-22 13:52:01,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502507502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738740123] [2024-11-22 13:52:01,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:52:01,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:01,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:01,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:01,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:52:01,365 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:52:01,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:01,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 13:52:01,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:52:01,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:01,467 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:52:01,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-22 13:52:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 13:52:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738740123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:01,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:01,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2024-11-22 13:52:01,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289048199] [2024-11-22 13:52:01,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:01,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:52:01,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:01,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:52:01,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:52:01,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-22 13:52:01,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 147 transitions, 1378 flow. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 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) [2024-11-22 13:52:01,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:01,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-22 13:52:01,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:02,196 INFO L124 PetriNetUnfolderBase]: 2299/4471 cut-off events. [2024-11-22 13:52:02,196 INFO L125 PetriNetUnfolderBase]: For 21000/21000 co-relation queries the response was YES. [2024-11-22 13:52:02,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17414 conditions, 4471 events. 2299/4471 cut-off events. For 21000/21000 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 29291 event pairs, 410 based on Foata normal form. 28/4497 useless extension candidates. Maximal degree in co-relation 17373. Up to 1955 conditions per place. [2024-11-22 13:52:02,231 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 168 selfloop transitions, 59 changer transitions 0/230 dead transitions. [2024-11-22 13:52:02,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 230 transitions, 2556 flow [2024-11-22 13:52:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:52:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:52:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-11-22 13:52:02,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-11-22 13:52:02,233 INFO L175 Difference]: Start difference. First operand has 115 places, 147 transitions, 1378 flow. Second operand 8 states and 95 transitions. [2024-11-22 13:52:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 230 transitions, 2556 flow [2024-11-22 13:52:02,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 230 transitions, 2445 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-11-22 13:52:02,364 INFO L231 Difference]: Finished difference. Result has 118 places, 162 transitions, 1693 flow [2024-11-22 13:52:02,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1693, PETRI_PLACES=118, PETRI_TRANSITIONS=162} [2024-11-22 13:52:02,365 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-11-22 13:52:02,365 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 162 transitions, 1693 flow [2024-11-22 13:52:02,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 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) [2024-11-22 13:52:02,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:02,366 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:02,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 13:52:02,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 13:52:02,567 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:52:02,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:02,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1134690662, now seen corresponding path program 1 times [2024-11-22 13:52:02,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:02,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993356643] [2024-11-22 13:52:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993356643] [2024-11-22 13:52:03,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993356643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:03,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898125470] [2024-11-22 13:52:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:03,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:03,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:03,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:03,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:52:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:03,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-22 13:52:03,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:04,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:05,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:52:05,171 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 42 treesize of output 34 [2024-11-22 13:52:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:05,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898125470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:05,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:05,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 49 [2024-11-22 13:52:05,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787611457] [2024-11-22 13:52:05,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:05,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-22 13:52:05,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:05,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-22 13:52:05,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2180, Unknown=0, NotChecked=0, Total=2450 [2024-11-22 13:52:05,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-22 13:52:05,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 162 transitions, 1693 flow. Second operand has 50 states, 50 states have (on average 5.52) internal successors, (276), 50 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:05,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:05,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-22 13:52:05,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:09,669 INFO L124 PetriNetUnfolderBase]: 3984/7484 cut-off events. [2024-11-22 13:52:09,669 INFO L125 PetriNetUnfolderBase]: For 50267/50267 co-relation queries the response was YES. [2024-11-22 13:52:09,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31655 conditions, 7484 events. 3984/7484 cut-off events. For 50267/50267 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 52479 event pairs, 514 based on Foata normal form. 4/7488 useless extension candidates. Maximal degree in co-relation 31614. Up to 4365 conditions per place. [2024-11-22 13:52:09,723 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 290 selfloop transitions, 243 changer transitions 11/546 dead transitions. [2024-11-22 13:52:09,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 546 transitions, 6376 flow [2024-11-22 13:52:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-22 13:52:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-22 13:52:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 403 transitions. [2024-11-22 13:52:09,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29567131327953045 [2024-11-22 13:52:09,727 INFO L175 Difference]: Start difference. First operand has 118 places, 162 transitions, 1693 flow. Second operand 47 states and 403 transitions. [2024-11-22 13:52:09,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 546 transitions, 6376 flow [2024-11-22 13:52:09,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 546 transitions, 6355 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-22 13:52:09,898 INFO L231 Difference]: Finished difference. Result has 176 places, 389 transitions, 5377 flow [2024-11-22 13:52:09,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=5377, PETRI_PLACES=176, PETRI_TRANSITIONS=389} [2024-11-22 13:52:09,899 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-11-22 13:52:09,899 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 389 transitions, 5377 flow [2024-11-22 13:52:09,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.52) internal successors, (276), 50 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:09,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:09,901 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:09,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 13:52:10,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:10,102 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:52:10,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:10,103 INFO L85 PathProgramCache]: Analyzing trace with hash -287117274, now seen corresponding path program 2 times [2024-11-22 13:52:10,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:10,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758818747] [2024-11-22 13:52:10,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:52:10,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:10,124 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:52:10,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:11,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758818747] [2024-11-22 13:52:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758818747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802616452] [2024-11-22 13:52:11,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:52:11,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:11,151 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:11,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:52:11,232 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:52:11,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:11,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-22 13:52:11,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:11,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:12,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:52:12,479 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 42 treesize of output 34 [2024-11-22 13:52:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802616452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:13,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:13,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-22 13:52:13,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673589730] [2024-11-22 13:52:13,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:13,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-22 13:52:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:13,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-22 13:52:13,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2024-11-22 13:52:13,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-22 13:52:13,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 389 transitions, 5377 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:13,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:13,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-22 13:52:13,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:28,844 INFO L124 PetriNetUnfolderBase]: 5242/10289 cut-off events. [2024-11-22 13:52:28,845 INFO L125 PetriNetUnfolderBase]: For 94096/94096 co-relation queries the response was YES. [2024-11-22 13:52:28,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50767 conditions, 10289 events. 5242/10289 cut-off events. For 94096/94096 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 80703 event pairs, 547 based on Foata normal form. 341/10630 useless extension candidates. Maximal degree in co-relation 50711. Up to 4720 conditions per place. [2024-11-22 13:52:28,927 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 448 selfloop transitions, 396 changer transitions 181/1027 dead transitions. [2024-11-22 13:52:28,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1027 transitions, 12560 flow [2024-11-22 13:52:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-22 13:52:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2024-11-22 13:52:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 954 transitions. [2024-11-22 13:52:28,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3018032268269535 [2024-11-22 13:52:28,932 INFO L175 Difference]: Start difference. First operand has 176 places, 389 transitions, 5377 flow. Second operand 109 states and 954 transitions. [2024-11-22 13:52:28,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1027 transitions, 12560 flow [2024-11-22 13:52:29,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1027 transitions, 12213 flow, removed 168 selfloop flow, removed 6 redundant places. [2024-11-22 13:52:29,274 INFO L231 Difference]: Finished difference. Result has 319 places, 617 transitions, 9193 flow [2024-11-22 13:52:29,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5113, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=109, PETRI_FLOW=9193, PETRI_PLACES=319, PETRI_TRANSITIONS=617} [2024-11-22 13:52:29,275 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2024-11-22 13:52:29,275 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 617 transitions, 9193 flow [2024-11-22 13:52:29,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:29,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:29,275 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:29,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 13:52:29,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:29,476 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:52:29,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 460074244, now seen corresponding path program 3 times [2024-11-22 13:52:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161537553] [2024-11-22 13:52:29,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:52:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:29,516 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:52:29,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:30,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161537553] [2024-11-22 13:52:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161537553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739011547] [2024-11-22 13:52:30,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:52:30,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:30,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:30,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:52:30,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:52:30,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:30,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-22 13:52:30,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:31,309 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:52:31,309 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 23 treesize of output 10 [2024-11-22 13:52:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:31,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:32,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:52:32,214 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 40 treesize of output 32 [2024-11-22 13:52:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:32,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739011547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:32,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:32,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-22 13:52:32,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715712431] [2024-11-22 13:52:32,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:32,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-22 13:52:32,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-22 13:52:32,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2441, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 13:52:32,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-22 13:52:32,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 617 transitions, 9193 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:32,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:32,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-22 13:52:32,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:41,500 INFO L124 PetriNetUnfolderBase]: 5148/9826 cut-off events. [2024-11-22 13:52:41,501 INFO L125 PetriNetUnfolderBase]: For 136157/136157 co-relation queries the response was YES. [2024-11-22 13:52:41,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59992 conditions, 9826 events. 5148/9826 cut-off events. For 136157/136157 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 73759 event pairs, 481 based on Foata normal form. 4/9830 useless extension candidates. Maximal degree in co-relation 59895. Up to 5125 conditions per place. [2024-11-22 13:52:41,618 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 463 selfloop transitions, 598 changer transitions 11/1074 dead transitions. [2024-11-22 13:52:41,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1074 transitions, 16262 flow [2024-11-22 13:52:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-22 13:52:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-11-22 13:52:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 606 transitions. [2024-11-22 13:52:41,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30730223123732253 [2024-11-22 13:52:41,621 INFO L175 Difference]: Start difference. First operand has 319 places, 617 transitions, 9193 flow. Second operand 68 states and 606 transitions. [2024-11-22 13:52:41,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1074 transitions, 16262 flow [2024-11-22 13:52:42,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 1074 transitions, 15106 flow, removed 552 selfloop flow, removed 28 redundant places. [2024-11-22 13:52:42,752 INFO L231 Difference]: Finished difference. Result has 355 places, 849 transitions, 13784 flow [2024-11-22 13:52:42,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8371, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=13784, PETRI_PLACES=355, PETRI_TRANSITIONS=849} [2024-11-22 13:52:42,753 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 326 predicate places. [2024-11-22 13:52:42,753 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 849 transitions, 13784 flow [2024-11-22 13:52:42,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:42,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:42,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:42,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 13:52:42,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-22 13:52:42,955 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:52:42,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1802102290, now seen corresponding path program 4 times [2024-11-22 13:52:42,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:42,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952515297] [2024-11-22 13:52:42,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:52:42,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:42,972 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:52:42,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:43,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:43,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952515297] [2024-11-22 13:52:43,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952515297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:43,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779358080] [2024-11-22 13:52:43,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:52:43,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:43,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:43,951 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:43,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:52:44,022 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:52:44,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:44,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-22 13:52:44,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:44,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:45,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:52:45,394 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 40 treesize of output 32 [2024-11-22 13:52:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779358080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:45,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:45,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-22 13:52:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751326147] [2024-11-22 13:52:45,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:45,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-22 13:52:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-22 13:52:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2424, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 13:52:45,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-22 13:52:45,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 849 transitions, 13784 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:45,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:45,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-22 13:52:45,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:54,901 INFO L124 PetriNetUnfolderBase]: 5351/10251 cut-off events. [2024-11-22 13:52:54,902 INFO L125 PetriNetUnfolderBase]: For 149229/149229 co-relation queries the response was YES. [2024-11-22 13:52:54,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66920 conditions, 10251 events. 5351/10251 cut-off events. For 149229/149229 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 77703 event pairs, 519 based on Foata normal form. 4/10255 useless extension candidates. Maximal degree in co-relation 66824. Up to 5522 conditions per place. [2024-11-22 13:52:55,060 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 510 selfloop transitions, 680 changer transitions 11/1203 dead transitions. [2024-11-22 13:52:55,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1203 transitions, 19940 flow [2024-11-22 13:52:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-22 13:52:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-22 13:52:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 577 transitions. [2024-11-22 13:52:55,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3158182813355227 [2024-11-22 13:52:55,073 INFO L175 Difference]: Start difference. First operand has 355 places, 849 transitions, 13784 flow. Second operand 63 states and 577 transitions. [2024-11-22 13:52:55,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1203 transitions, 19940 flow [2024-11-22 13:52:56,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 1203 transitions, 19102 flow, removed 393 selfloop flow, removed 10 redundant places. [2024-11-22 13:52:56,483 INFO L231 Difference]: Finished difference. Result has 423 places, 1000 transitions, 17729 flow [2024-11-22 13:52:56,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=13147, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=17729, PETRI_PLACES=423, PETRI_TRANSITIONS=1000} [2024-11-22 13:52:56,484 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 394 predicate places. [2024-11-22 13:52:56,484 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 1000 transitions, 17729 flow [2024-11-22 13:52:56,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:56,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:56,485 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:56,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 13:52:56,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:56,686 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:52:56,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1779634174, now seen corresponding path program 5 times [2024-11-22 13:52:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:56,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636466911] [2024-11-22 13:52:56,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:52:56,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:56,705 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:52:56,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:57,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:57,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636466911] [2024-11-22 13:52:57,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636466911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:57,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214090928] [2024-11-22 13:52:57,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:52:57,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:57,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:57,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:57,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:52:57,566 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:52:57,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:57,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-22 13:52:57,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:58,132 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:52:58,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-22 13:52:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:58,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:58,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:52:58,830 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 40 treesize of output 32 [2024-11-22 13:52:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:59,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214090928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:52:59,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:52:59,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-22 13:52:59,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847659373] [2024-11-22 13:52:59,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:52:59,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-22 13:52:59,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:59,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-22 13:52:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2024-11-22 13:52:59,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-22 13:52:59,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1000 transitions, 17729 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:59,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:59,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-22 13:52:59,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand