./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-commit-1.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-commit-1.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 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:48:45,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:48:45,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:48:45,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:48:45,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:48:45,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:48:45,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:48:45,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:48:45,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:48:45,862 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:48:45,862 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:48:45,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:48:45,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:48:45,863 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:48:45,863 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:48:45,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:48:45,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:48:45,863 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:48:45,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:48:45,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:48:45,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:48:45,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:48:45,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:48:45,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:48:45,866 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:48:45,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:48:45,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:48:45,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:48:45,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:48:45,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:48:45,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:48:45,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:48:45,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:48:45,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:48:45,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:48:45,868 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:48:45,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:48:45,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:48:45,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:48:45,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:48:45,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:48:45,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:48:45,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2024-11-22 13:48:46,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:48:46,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:48:46,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:48:46,096 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:48:46,096 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:48:46,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-11-22 13:48:47,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:48:47,464 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:48:47,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-11-22 13:48:47,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b2a30273/6129e0cb68f64a7ba40d50a5ee4eb37d/FLAG315fbc5ce [2024-11-22 13:48:47,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b2a30273/6129e0cb68f64a7ba40d50a5ee4eb37d [2024-11-22 13:48:47,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:48:47,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:48:47,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:48:47,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:48:47,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:48:47,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a8d0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47, skipping insertion in model container [2024-11-22 13:48:47,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,518 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:48:47,679 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-commit-1.wvr.c[4643,4656] [2024-11-22 13:48:47,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:48:47,691 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:48:47,712 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-commit-1.wvr.c[4643,4656] [2024-11-22 13:48:47,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:48:47,730 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:48:47,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47 WrapperNode [2024-11-22 13:48:47,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:48:47,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:48:47,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:48:47,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:48:47,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,767 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 337 [2024-11-22 13:48:47,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:48:47,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:48:47,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:48:47,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:48:47,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,798 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-22 13:48:47,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:48:47,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:48:47,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:48:47,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:48:47,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (1/1) ... [2024-11-22 13:48:47,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:48:47,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:47,847 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 13:48:47,864 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 13:48:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:48:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:48:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:48:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:48:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:48:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:48:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:48:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:48:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:48:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:48:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:48:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:48:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:48:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:48:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:48:47,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:48:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:48:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:48:47,920 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 13:48:48,007 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:48:48,008 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:48:48,374 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:48:48,374 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:48:48,647 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:48:48,647 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 13:48:48,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:48 BoogieIcfgContainer [2024-11-22 13:48:48,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:48:48,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:48:48,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:48:48,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:48:48,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:48:47" (1/3) ... [2024-11-22 13:48:48,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f44c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:48, skipping insertion in model container [2024-11-22 13:48:48,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:47" (2/3) ... [2024-11-22 13:48:48,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f44c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:48, skipping insertion in model container [2024-11-22 13:48:48,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:48" (3/3) ... [2024-11-22 13:48:48,656 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-11-22 13:48:48,670 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:48:48,670 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:48:48,670 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:48:48,719 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:48:48,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 117 flow [2024-11-22 13:48:48,779 INFO L124 PetriNetUnfolderBase]: 9/45 cut-off events. [2024-11-22 13:48:48,779 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:48:48,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 9/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-22 13:48:48,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 48 transitions, 117 flow [2024-11-22 13:48:48,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 106 flow [2024-11-22 13:48:48,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:48:48,804 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;@4c06cb28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:48:48,806 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:48:48,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:48:48,818 INFO L124 PetriNetUnfolderBase]: 9/43 cut-off events. [2024-11-22 13:48:48,818 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:48:48,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:48,819 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 13:48:48,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:48,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:48,823 INFO L85 PathProgramCache]: Analyzing trace with hash -102076622, now seen corresponding path program 1 times [2024-11-22 13:48:48,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:48,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78577288] [2024-11-22 13:48:48,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:48,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:49,035 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 13:48:49,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78577288] [2024-11-22 13:48:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78577288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:49,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:48:49,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753515527] [2024-11-22 13:48:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:49,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:48:49,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:48:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:48:49,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:49,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 13:48:49,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:49,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:49,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:49,478 INFO L124 PetriNetUnfolderBase]: 2548/3637 cut-off events. [2024-11-22 13:48:49,479 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-22 13:48:49,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7470 conditions, 3637 events. 2548/3637 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16610 event pairs, 2146 based on Foata normal form. 0/3229 useless extension candidates. Maximal degree in co-relation 7063. Up to 3626 conditions per place. [2024-11-22 13:48:49,497 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 37 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2024-11-22 13:48:49,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 174 flow [2024-11-22 13:48:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:48:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 13:48:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-22 13:48:49,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-22 13:48:49,508 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 2 states and 54 transitions. [2024-11-22 13:48:49,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 174 flow [2024-11-22 13:48:49,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:48:49,517 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 88 flow [2024-11-22 13:48:49,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2024-11-22 13:48:49,521 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2024-11-22 13:48:49,521 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 88 flow [2024-11-22 13:48:49,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 13:48:49,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:49,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:49,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:48:49,522 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:49,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:49,523 INFO L85 PathProgramCache]: Analyzing trace with hash 665032564, now seen corresponding path program 1 times [2024-11-22 13:48:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:49,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343043222] [2024-11-22 13:48:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:49,732 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 13:48:49,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343043222] [2024-11-22 13:48:49,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343043222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:49,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:49,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:48:49,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545043090] [2024-11-22 13:48:49,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:49,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:48:49,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:49,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:48:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:48:49,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:49,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 13:48:49,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:49,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:49,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:50,153 INFO L124 PetriNetUnfolderBase]: 3499/4990 cut-off events. [2024-11-22 13:48:50,155 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-22 13:48:50,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10072 conditions, 4990 events. 3499/4990 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25016 event pairs, 876 based on Foata normal form. 1/4374 useless extension candidates. Maximal degree in co-relation 10069. Up to 3852 conditions per place. [2024-11-22 13:48:50,173 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 56 selfloop transitions, 4 changer transitions 1/65 dead transitions. [2024-11-22 13:48:50,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 263 flow [2024-11-22 13:48:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:48:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:48:50,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-22 13:48:50,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-11-22 13:48:50,175 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 3 states and 83 transitions. [2024-11-22 13:48:50,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 263 flow [2024-11-22 13:48:50,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:48:50,178 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 114 flow [2024-11-22 13:48:50,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2024-11-22 13:48:50,179 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2024-11-22 13:48:50,179 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 114 flow [2024-11-22 13:48:50,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 13:48:50,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:50,180 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:50,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:48:50,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:50,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:50,182 INFO L85 PathProgramCache]: Analyzing trace with hash -886347784, now seen corresponding path program 1 times [2024-11-22 13:48:50,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:50,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298583283] [2024-11-22 13:48:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:50,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298583283] [2024-11-22 13:48:50,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298583283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:50,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:50,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:48:50,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154322942] [2024-11-22 13:48:50,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:50,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:48:50,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:50,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:48:50,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:48:50,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:50,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 13:48:50,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:50,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:50,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:50,823 INFO L124 PetriNetUnfolderBase]: 4888/7036 cut-off events. [2024-11-22 13:48:50,823 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-11-22 13:48:50,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15083 conditions, 7036 events. 4888/7036 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 35526 event pairs, 2384 based on Foata normal form. 165/6301 useless extension candidates. Maximal degree in co-relation 15078. Up to 3648 conditions per place. [2024-11-22 13:48:50,895 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 65 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-22 13:48:50,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 310 flow [2024-11-22 13:48:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:48:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:48:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-22 13:48:50,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-22 13:48:50,902 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 114 flow. Second operand 3 states and 87 transitions. [2024-11-22 13:48:50,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 310 flow [2024-11-22 13:48:50,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:50,905 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 118 flow [2024-11-22 13:48:50,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-22 13:48:50,906 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-11-22 13:48:50,906 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 118 flow [2024-11-22 13:48:50,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 13:48:50,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:50,907 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:50,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:48:50,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:50,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1401038186, now seen corresponding path program 1 times [2024-11-22 13:48:50,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:50,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225184472] [2024-11-22 13:48:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:50,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:50,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:50,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225184472] [2024-11-22 13:48:50,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225184472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:50,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:50,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:48:50,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308809801] [2024-11-22 13:48:50,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:50,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:48:50,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:48:50,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:48:50,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:50,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 13:48:50,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:50,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:50,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:51,394 INFO L124 PetriNetUnfolderBase]: 3703/5358 cut-off events. [2024-11-22 13:48:51,395 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2024-11-22 13:48:51,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11733 conditions, 5358 events. 3703/5358 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25780 event pairs, 1275 based on Foata normal form. 90/4779 useless extension candidates. Maximal degree in co-relation 11727. Up to 4000 conditions per place. [2024-11-22 13:48:51,422 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 54 selfloop transitions, 2 changer transitions 5/65 dead transitions. [2024-11-22 13:48:51,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 285 flow [2024-11-22 13:48:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:48:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:48:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-22 13:48:51,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-11-22 13:48:51,424 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 118 flow. Second operand 3 states and 82 transitions. [2024-11-22 13:48:51,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 285 flow [2024-11-22 13:48:51,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:51,426 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 124 flow [2024-11-22 13:48:51,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-11-22 13:48:51,427 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-22 13:48:51,427 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 124 flow [2024-11-22 13:48:51,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 13:48:51,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:51,428 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:51,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:48:51,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:51,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:51,429 INFO L85 PathProgramCache]: Analyzing trace with hash -664395841, now seen corresponding path program 1 times [2024-11-22 13:48:51,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:51,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653321497] [2024-11-22 13:48:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:51,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:51,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:51,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:51,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653321497] [2024-11-22 13:48:51,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653321497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:51,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:51,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:48:51,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039633156] [2024-11-22 13:48:51,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:51,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:48:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:48:51,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:48:51,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:51,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 13:48:51,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:51,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:51,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:51,798 INFO L124 PetriNetUnfolderBase]: 2561/3734 cut-off events. [2024-11-22 13:48:51,798 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2024-11-22 13:48:51,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8246 conditions, 3734 events. 2561/3734 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16251 event pairs, 1346 based on Foata normal form. 62/3266 useless extension candidates. Maximal degree in co-relation 8239. Up to 2767 conditions per place. [2024-11-22 13:48:51,810 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 7/61 dead transitions. [2024-11-22 13:48:51,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 275 flow [2024-11-22 13:48:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:48:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:48:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-22 13:48:51,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-22 13:48:51,811 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 124 flow. Second operand 3 states and 76 transitions. [2024-11-22 13:48:51,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 275 flow [2024-11-22 13:48:51,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:51,813 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 134 flow [2024-11-22 13:48:51,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-11-22 13:48:51,814 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-11-22 13:48:51,814 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 134 flow [2024-11-22 13:48:51,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 13:48:51,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:51,814 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:51,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:48:51,815 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:51,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash -802486131, now seen corresponding path program 1 times [2024-11-22 13:48:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:51,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315483465] [2024-11-22 13:48:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:51,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:51,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:51,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315483465] [2024-11-22 13:48:51,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315483465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:51,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:51,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:48:51,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920260233] [2024-11-22 13:48:51,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:51,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:48:51,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:51,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 13:48:51,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:51,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:51,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:52,275 INFO L124 PetriNetUnfolderBase]: 3173/4706 cut-off events. [2024-11-22 13:48:52,275 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2024-11-22 13:48:52,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10442 conditions, 4706 events. 3173/4706 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22250 event pairs, 2856 based on Foata normal form. 56/4044 useless extension candidates. Maximal degree in co-relation 10434. Up to 3723 conditions per place. [2024-11-22 13:48:52,291 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 40 selfloop transitions, 2 changer transitions 30/76 dead transitions. [2024-11-22 13:48:52,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 346 flow [2024-11-22 13:48:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:48:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:48:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-11-22 13:48:52,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-22 13:48:52,294 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 134 flow. Second operand 5 states and 104 transitions. [2024-11-22 13:48:52,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 346 flow [2024-11-22 13:48:52,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:52,296 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 154 flow [2024-11-22 13:48:52,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-11-22 13:48:52,297 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-11-22 13:48:52,297 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 154 flow [2024-11-22 13:48:52,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 13:48:52,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:52,298 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:52,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:48:52,299 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:52,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:52,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1658302438, now seen corresponding path program 1 times [2024-11-22 13:48:52,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:52,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571111712] [2024-11-22 13:48:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:52,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:52,492 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 13:48:52,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:52,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571111712] [2024-11-22 13:48:52,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571111712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:52,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:52,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:48:52,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000766846] [2024-11-22 13:48:52,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:52,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:52,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:48:52,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:52,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 13:48:52,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:52,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:52,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:52,856 INFO L124 PetriNetUnfolderBase]: 3336/4961 cut-off events. [2024-11-22 13:48:52,856 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2024-11-22 13:48:52,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11118 conditions, 4961 events. 3336/4961 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23602 event pairs, 3018 based on Foata normal form. 14/4235 useless extension candidates. Maximal degree in co-relation 11107. Up to 3721 conditions per place. [2024-11-22 13:48:52,869 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 40 selfloop transitions, 3 changer transitions 30/77 dead transitions. [2024-11-22 13:48:52,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 390 flow [2024-11-22 13:48:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:48:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:48:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-22 13:48:52,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-11-22 13:48:52,870 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 154 flow. Second operand 4 states and 97 transitions. [2024-11-22 13:48:52,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 390 flow [2024-11-22 13:48:52,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 366 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-22 13:48:52,874 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 158 flow [2024-11-22 13:48:52,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-11-22 13:48:52,874 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-11-22 13:48:52,874 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 158 flow [2024-11-22 13:48:52,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 13:48:52,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:52,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:52,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:48:52,875 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:52,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2115243705, now seen corresponding path program 1 times [2024-11-22 13:48:52,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:52,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383707169] [2024-11-22 13:48:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:53,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:53,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383707169] [2024-11-22 13:48:53,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383707169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:53,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:53,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:48:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973734621] [2024-11-22 13:48:53,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:53,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:53,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:53,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:48:53,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:53,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:48:53,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:53,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:53,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:53,282 INFO L124 PetriNetUnfolderBase]: 3297/4894 cut-off events. [2024-11-22 13:48:53,282 INFO L125 PetriNetUnfolderBase]: For 809/809 co-relation queries the response was YES. [2024-11-22 13:48:53,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10865 conditions, 4894 events. 3297/4894 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23330 event pairs, 2984 based on Foata normal form. 10/4168 useless extension candidates. Maximal degree in co-relation 10854. Up to 3719 conditions per place. [2024-11-22 13:48:53,299 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 3 changer transitions 24/72 dead transitions. [2024-11-22 13:48:53,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 356 flow [2024-11-22 13:48:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:48:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:48:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-22 13:48:53,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-11-22 13:48:53,302 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 158 flow. Second operand 4 states and 91 transitions. [2024-11-22 13:48:53,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 356 flow [2024-11-22 13:48:53,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 13:48:53,305 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 166 flow [2024-11-22 13:48:53,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-11-22 13:48:53,305 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-11-22 13:48:53,306 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 166 flow [2024-11-22 13:48:53,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:48:53,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:53,306 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:53,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:48:53,308 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:53,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1670686615, now seen corresponding path program 1 times [2024-11-22 13:48:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519968862] [2024-11-22 13:48:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:53,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:53,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519968862] [2024-11-22 13:48:53,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519968862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:53,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477076056] [2024-11-22 13:48:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:53,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:53,499 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 13:48:53,500 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 13:48:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:53,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:48:53,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:48:53,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:48:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477076056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:53,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:48:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-22 13:48:53,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391677320] [2024-11-22 13:48:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:53,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:48:53,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:53,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:48:53,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:53,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:53,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:54,314 INFO L124 PetriNetUnfolderBase]: 5255/7615 cut-off events. [2024-11-22 13:48:54,314 INFO L125 PetriNetUnfolderBase]: For 2102/2102 co-relation queries the response was YES. [2024-11-22 13:48:54,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 7615 events. 5255/7615 cut-off events. For 2102/2102 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 35172 event pairs, 2749 based on Foata normal form. 156/6710 useless extension candidates. Maximal degree in co-relation 17538. Up to 2981 conditions per place. [2024-11-22 13:48:54,350 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 85 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-11-22 13:48:54,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 498 flow [2024-11-22 13:48:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:48:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:48:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-22 13:48:54,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-11-22 13:48:54,351 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 166 flow. Second operand 4 states and 115 transitions. [2024-11-22 13:48:54,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 498 flow [2024-11-22 13:48:54,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 488 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 13:48:54,356 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 219 flow [2024-11-22 13:48:54,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-22 13:48:54,356 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-11-22 13:48:54,356 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 219 flow [2024-11-22 13:48:54,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:48:54,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:54,358 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:54,368 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 13:48:54,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:54,563 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:54,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash -695731987, now seen corresponding path program 1 times [2024-11-22 13:48:54,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:54,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759341418] [2024-11-22 13:48:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:54,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:54,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:54,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759341418] [2024-11-22 13:48:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759341418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718357132] [2024-11-22 13:48:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:54,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:54,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:54,754 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 13:48:54,755 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 13:48:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:54,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:48:54,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:54,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:48:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718357132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:48:55,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:48:55,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-22 13:48:55,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298508292] [2024-11-22 13:48:55,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:48:55,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:48:55,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:55,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:48:55,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:48:55,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:55,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 219 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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 13:48:55,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:55,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:55,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:55,721 INFO L124 PetriNetUnfolderBase]: 6007/8805 cut-off events. [2024-11-22 13:48:55,721 INFO L125 PetriNetUnfolderBase]: For 4179/4179 co-relation queries the response was YES. [2024-11-22 13:48:55,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21967 conditions, 8805 events. 6007/8805 cut-off events. For 4179/4179 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 42986 event pairs, 5125 based on Foata normal form. 2/7537 useless extension candidates. Maximal degree in co-relation 21954. Up to 7601 conditions per place. [2024-11-22 13:48:55,754 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 48 selfloop transitions, 3 changer transitions 43/98 dead transitions. [2024-11-22 13:48:55,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 539 flow [2024-11-22 13:48:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:48:55,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:48:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-11-22 13:48:55,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-11-22 13:48:55,755 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 219 flow. Second operand 7 states and 130 transitions. [2024-11-22 13:48:55,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 539 flow [2024-11-22 13:48:55,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 531 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-22 13:48:55,761 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 235 flow [2024-11-22 13:48:55,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-22 13:48:55,763 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2024-11-22 13:48:55,763 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 235 flow [2024-11-22 13:48:55,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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 13:48:55,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:55,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:55,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:48:55,964 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,SelfDestructingSolverStorable9 [2024-11-22 13:48:55,965 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:55,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash 231276410, now seen corresponding path program 2 times [2024-11-22 13:48:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57450121] [2024-11-22 13:48:55,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:48:55,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:56,007 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:48:56,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 13:48:56,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57450121] [2024-11-22 13:48:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57450121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245894869] [2024-11-22 13:48:56,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:48:56,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:56,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:56,138 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 13:48:56,139 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 13:48:56,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:48:56,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:56,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:48:56,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 13:48:56,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:48:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 13:48:56,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245894869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:48:56,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:48:56,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2024-11-22 13:48:56,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531096532] [2024-11-22 13:48:56,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:48:56,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:48:56,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:56,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:48:56,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:48:56,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:48:56,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 235 flow. Second operand has 13 states, 13 states have (on average 14.846153846153847) internal successors, (193), 13 states have internal predecessors, (193), 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 13:48:56,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:56,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:48:56,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:57,466 INFO L124 PetriNetUnfolderBase]: 6524/9690 cut-off events. [2024-11-22 13:48:57,467 INFO L125 PetriNetUnfolderBase]: For 5770/5770 co-relation queries the response was YES. [2024-11-22 13:48:57,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24264 conditions, 9690 events. 6524/9690 cut-off events. For 5770/5770 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 48974 event pairs, 5339 based on Foata normal form. 309/8634 useless extension candidates. Maximal degree in co-relation 24246. Up to 7598 conditions per place. [2024-11-22 13:48:57,515 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 46 selfloop transitions, 6 changer transitions 56/112 dead transitions. [2024-11-22 13:48:57,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 665 flow [2024-11-22 13:48:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:48:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:48:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-11-22 13:48:57,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-11-22 13:48:57,516 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 235 flow. Second operand 8 states and 146 transitions. [2024-11-22 13:48:57,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 665 flow [2024-11-22 13:48:57,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 112 transitions, 643 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-22 13:48:57,526 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 249 flow [2024-11-22 13:48:57,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-11-22 13:48:57,526 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2024-11-22 13:48:57,527 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 249 flow [2024-11-22 13:48:57,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.846153846153847) internal successors, (193), 13 states have internal predecessors, (193), 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 13:48:57,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:57,527 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:57,534 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 13:48:57,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:57,728 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:48:57,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:57,728 INFO L85 PathProgramCache]: Analyzing trace with hash 906033355, now seen corresponding path program 3 times [2024-11-22 13:48:57,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:57,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060955249] [2024-11-22 13:48:57,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:48:57,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:57,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:48:57,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:00,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060955249] [2024-11-22 13:49:00,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060955249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298812905] [2024-11-22 13:49:00,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:00,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:00,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:00,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:00,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:49:00,896 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:49:00,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:00,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-22 13:49:00,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:01,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:49:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:49:01,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:06,204 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int#1| c_~manager~0.base))) (let ((.cse1 (* c_~client_back~0 4)) (.cse2 (select .cse5 (+ c_~manager~0.offset (* c_~manager_back~0 4))))) (let ((.cse0 (forall ((~client~0.base Int) (~client~0.offset Int)) (let ((.cse6 (select |c_#memory_int#1| ~client~0.base))) (or (= (select .cse6 (+ (* c_~client_front~0 4) ~client~0.offset)) .cse2) (not (= (select .cse6 (+ .cse1 ~client~0.offset)) .cse2)))))) (.cse3 (= (select .cse5 (+ (* 4 c_~manager_front~0) c_~manager~0.offset)) .cse2)) (.cse4 (= (mod c_~safe~0 256) 0))) (and (or (and .cse0 (forall ((~client~0.base Int) (~client~0.offset Int)) (not (= (select (select |c_#memory_int#1| ~client~0.base) (+ .cse1 ~client~0.offset)) .cse2)))) (and .cse3 (not .cse4))) (or .cse0 (not .cse3) .cse4))))) is different from false [2024-11-22 13:49:10,356 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int#1| c_~manager~0.base))) (let ((.cse7 (* c_~client_back~0 4)) (.cse6 (select .cse5 (+ c_~manager~0.offset (* c_~manager_back~0 4))))) (let ((.cse4 (forall ((~client~0.base Int) (~client~0.offset Int)) (let ((.cse8 (select |c_#memory_int#1| ~client~0.base))) (or (= (select .cse8 (+ (* c_~client_front~0 4) ~client~0.offset)) .cse6) (not (= (select .cse8 (+ .cse7 ~client~0.offset)) .cse6))))))) (let ((.cse0 (and .cse4 (forall ((~client~0.base Int) (~client~0.offset Int)) (not (= (select (select |c_#memory_int#1| ~client~0.base) (+ .cse7 ~client~0.offset)) .cse6))))) (.cse1 (= (mod c_~safe~0 256) 0))) (and (or .cse0 (not .cse1)) (or (let ((.cse2 (= (select (select |c_#memory_int#1| c_~node~0.base) (+ (* c_~node_front~0 4) c_~node~0.offset)) c_~update~0))) (and (or .cse0 .cse2) (or (let ((.cse3 (= (select .cse5 (+ (* 4 c_~manager_front~0) c_~manager~0.offset)) .cse6))) (and (or .cse0 .cse3) (or .cse4 (not .cse3)))) (not .cse2)))) .cse1)))))) is different from false [2024-11-22 13:49:38,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:38,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 602 treesize of output 590 [2024-11-22 13:49:38,615 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:49:38,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 61 [2024-11-22 13:49:38,930 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:49:38,931 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 124 treesize of output 103 [2024-11-22 13:49:39,048 INFO L349 Elim1Store]: treesize reduction 10, result has 87.7 percent of original size [2024-11-22 13:49:39,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 248 [2024-11-22 13:49:41,226 INFO L349 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size [2024-11-22 13:49:41,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 322 treesize of output 313 [2024-11-22 13:49:41,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:41,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 521 treesize of output 515 [2024-11-22 13:49:41,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-22 13:49:42,045 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:49:42,046 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 124 treesize of output 103 [2024-11-22 13:49:42,170 INFO L349 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2024-11-22 13:49:42,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 150 [2024-11-22 13:49:43,830 INFO L349 Elim1Store]: treesize reduction 34, result has 96.6 percent of original size [2024-11-22 13:49:43,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 539 treesize of output 1306 [2024-11-22 13:49:47,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:47,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 761 treesize of output 741 [2024-11-22 13:49:47,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 13:49:47,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-22 13:49:47,396 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:49:47,397 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 124 treesize of output 103 [2024-11-22 13:49:47,549 INFO L349 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2024-11-22 13:49:47,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 157 [2024-11-22 13:49:48,054 INFO L349 Elim1Store]: treesize reduction 61, result has 40.8 percent of original size [2024-11-22 13:49:48,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 359 treesize of output 318 [2024-11-22 13:49:48,155 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-22 13:49:48,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 755 treesize of output 1 [2024-11-22 13:49:48,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:48,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 609 treesize of output 597 [2024-11-22 13:49:48,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 4 [2024-11-22 13:49:48,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 11 [2024-11-22 13:49:48,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:48,313 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 73 treesize of output 69 [2024-11-22 13:49:48,475 INFO L349 Elim1Store]: treesize reduction 13, result has 92.7 percent of original size [2024-11-22 13:49:48,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 439 treesize of output 490 [2024-11-22 13:49:56,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:56,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 456 treesize of output 452 [2024-11-22 13:49:56,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 11 [2024-11-22 13:49:56,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 4 [2024-11-22 13:49:56,414 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:49:56,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 61 [2024-11-22 13:49:56,498 INFO L349 Elim1Store]: treesize reduction 41, result has 49.4 percent of original size [2024-11-22 13:49:56,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 316 treesize of output 271 [2024-11-22 13:49:56,713 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-22 13:49:56,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 375 treesize of output 1 [2024-11-22 13:49:56,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:49:56,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 243 [2024-11-22 13:49:56,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-22 13:49:57,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 37 treesize of output 31 [2024-11-22 13:49:57,133 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-22 13:49:57,134 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 43 treesize of output 18 [2024-11-22 13:49:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 13:49:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298812905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:57,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:57,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 49 [2024-11-22 13:49:57,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760249381] [2024-11-22 13:49:57,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:57,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-22 13:49:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-22 13:49:57,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1972, Unknown=8, NotChecked=186, Total=2450 [2024-11-22 13:49:57,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-11-22 13:49:57,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 249 flow. Second operand has 50 states, 50 states have (on average 9.46) internal successors, (473), 50 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:49:57,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:57,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-11-22 13:49:57,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:50:02,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:50:06,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:50:08,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:50:12,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]