./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:26:57,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:26:57,195 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:26:57,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:26:57,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:26:57,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:26:57,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:26:57,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:26:57,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:26:57,226 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:26:57,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:26:57,227 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:26:57,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:26:57,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:26:57,228 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:26:57,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:26:57,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:26:57,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:26:57,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:26:57,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:26:57,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:26:57,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:26:57,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:26:57,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:26:57,235 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:26:57,235 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:26:57,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:26:57,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:26:57,236 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:26:57,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:26:57,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:26:57,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:26:57,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:26:57,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:26:57,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:26:57,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:26:57,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:26:57,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:26:57,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:26:57,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:26:57,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:26:57,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:26:57,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-11-10 10:26:57,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:26:57,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:26:57,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:26:57,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:26:57,480 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:26:57,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-10 10:26:58,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:26:59,017 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:26:59,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-10 10:26:59,023 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5885bb2b5/e85e93cf34da434786cdf7a27588b313/FLAG2d90e9525 [2024-11-10 10:26:59,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5885bb2b5/e85e93cf34da434786cdf7a27588b313 [2024-11-10 10:26:59,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:26:59,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:26:59,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:26:59,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:26:59,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:26:59,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f616211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59, skipping insertion in model container [2024-11-10 10:26:59,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:26:59,684 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/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-10 10:26:59,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:26:59,700 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:26:59,722 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/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-10 10:26:59,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:26:59,739 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:26:59,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59 WrapperNode [2024-11-10 10:26:59,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:26:59,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:26:59,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:26:59,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:26:59,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,771 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 165 [2024-11-10 10:26:59,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:26:59,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:26:59,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:26:59,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:26:59,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,793 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 10:26:59,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,802 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:26:59,813 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:26:59,813 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:26:59,813 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:26:59,814 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (1/1) ... [2024-11-10 10:26:59,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:26:59,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:26:59,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:26:59,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:26:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:26:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:26:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:26:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:26:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:26:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:26:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:26:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:26:59,878 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:26:59,967 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:26:59,969 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:27:00,236 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:27:00,236 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:27:00,439 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:27:00,440 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:27:00,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:00 BoogieIcfgContainer [2024-11-10 10:27:00,441 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:27:00,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:27:00,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:27:00,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:27:00,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:26:59" (1/3) ... [2024-11-10 10:27:00,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5848a0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:00, skipping insertion in model container [2024-11-10 10:27:00,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:59" (2/3) ... [2024-11-10 10:27:00,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5848a0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:00, skipping insertion in model container [2024-11-10 10:27:00,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:00" (3/3) ... [2024-11-10 10:27:00,452 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-11-10 10:27:00,468 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:27:00,469 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:27:00,469 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:27:00,514 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:27:00,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 38 transitions, 90 flow [2024-11-10 10:27:00,572 INFO L124 PetriNetUnfolderBase]: 10/36 cut-off events. [2024-11-10 10:27:00,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:27:00,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 10/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2024-11-10 10:27:00,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 38 transitions, 90 flow [2024-11-10 10:27:00,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 35 transitions, 82 flow [2024-11-10 10:27:00,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:27:00,598 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;@2ff91b58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:27:00,598 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 10:27:00,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:27:00,616 INFO L124 PetriNetUnfolderBase]: 10/34 cut-off events. [2024-11-10 10:27:00,616 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:27:00,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:00,617 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:00,617 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:00,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:00,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1940154450, now seen corresponding path program 1 times [2024-11-10 10:27:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448260272] [2024-11-10 10:27:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:00,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:00,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:00,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448260272] [2024-11-10 10:27:00,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448260272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:00,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:00,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:27:00,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326681451] [2024-11-10 10:27:00,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:00,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:27:00,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:27:00,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:27:00,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:00,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:00,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:00,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:00,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:00,915 INFO L124 PetriNetUnfolderBase]: 99/184 cut-off events. [2024-11-10 10:27:00,915 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-10 10:27:00,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 184 events. 99/184 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 572 event pairs, 53 based on Foata normal form. 23/179 useless extension candidates. Maximal degree in co-relation 310. Up to 160 conditions per place. [2024-11-10 10:27:00,918 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 22 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2024-11-10 10:27:00,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 118 flow [2024-11-10 10:27:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:27:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:27:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2024-11-10 10:27:00,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-10 10:27:00,929 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 82 flow. Second operand 2 states and 48 transitions. [2024-11-10 10:27:00,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 118 flow [2024-11-10 10:27:00,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:27:00,933 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 66 flow [2024-11-10 10:27:00,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2024-11-10 10:27:00,938 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-11-10 10:27:00,939 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 66 flow [2024-11-10 10:27:00,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:00,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:00,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:00,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:27:00,940 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:00,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash 506495782, now seen corresponding path program 1 times [2024-11-10 10:27:00,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:00,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892249109] [2024-11-10 10:27:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:00,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:01,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:01,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892249109] [2024-11-10 10:27:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892249109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:01,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:27:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173565928] [2024-11-10 10:27:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:01,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:27:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:27:01,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:27:01,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:27:01,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:01,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:01,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:27:01,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:01,313 INFO L124 PetriNetUnfolderBase]: 221/404 cut-off events. [2024-11-10 10:27:01,313 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:27:01,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 404 events. 221/404 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1689 event pairs, 63 based on Foata normal form. 5/337 useless extension candidates. Maximal degree in co-relation 785. Up to 161 conditions per place. [2024-11-10 10:27:01,316 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 43 selfloop transitions, 5 changer transitions 2/58 dead transitions. [2024-11-10 10:27:01,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 58 transitions, 226 flow [2024-11-10 10:27:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:27:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:27:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-11-10 10:27:01,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2024-11-10 10:27:01,318 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 66 flow. Second operand 5 states and 101 transitions. [2024-11-10 10:27:01,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 58 transitions, 226 flow [2024-11-10 10:27:01,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:27:01,321 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 90 flow [2024-11-10 10:27:01,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-10 10:27:01,322 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2024-11-10 10:27:01,322 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 90 flow [2024-11-10 10:27:01,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:01,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:01,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:01,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:27:01,322 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:01,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash -925098010, now seen corresponding path program 2 times [2024-11-10 10:27:01,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:01,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668867003] [2024-11-10 10:27:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:01,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:01,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668867003] [2024-11-10 10:27:01,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668867003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:01,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:01,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:27:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781698321] [2024-11-10 10:27:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:01,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:27:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:27:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:27:01,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:27:01,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:01,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:01,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:27:01,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:01,626 INFO L124 PetriNetUnfolderBase]: 408/755 cut-off events. [2024-11-10 10:27:01,627 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-10 10:27:01,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 755 events. 408/755 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3722 event pairs, 149 based on Foata normal form. 4/666 useless extension candidates. Maximal degree in co-relation 1587. Up to 338 conditions per place. [2024-11-10 10:27:01,633 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 44 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-11-10 10:27:01,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 255 flow [2024-11-10 10:27:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:27:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:27:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-10 10:27:01,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-11-10 10:27:01,636 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 90 flow. Second operand 5 states and 97 transitions. [2024-11-10 10:27:01,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 255 flow [2024-11-10 10:27:01,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:27:01,639 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 108 flow [2024-11-10 10:27:01,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-11-10 10:27:01,640 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-11-10 10:27:01,643 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 108 flow [2024-11-10 10:27:01,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:01,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:01,644 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:01,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:27:01,644 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:01,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash 636688502, now seen corresponding path program 3 times [2024-11-10 10:27:01,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:01,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145803966] [2024-11-10 10:27:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:01,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:01,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145803966] [2024-11-10 10:27:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145803966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:01,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:01,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:27:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110114134] [2024-11-10 10:27:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:01,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:27:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:27:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:27:01,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:27:01,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:01,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:01,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:27:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:01,906 INFO L124 PetriNetUnfolderBase]: 425/798 cut-off events. [2024-11-10 10:27:01,906 INFO L125 PetriNetUnfolderBase]: For 357/357 co-relation queries the response was YES. [2024-11-10 10:27:01,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 798 events. 425/798 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3996 event pairs, 138 based on Foata normal form. 16/803 useless extension candidates. Maximal degree in co-relation 1831. Up to 314 conditions per place. [2024-11-10 10:27:01,916 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 51 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2024-11-10 10:27:01,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 302 flow [2024-11-10 10:27:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:27:01,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:27:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-10 10:27:01,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-11-10 10:27:01,922 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 108 flow. Second operand 4 states and 93 transitions. [2024-11-10 10:27:01,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 302 flow [2024-11-10 10:27:01,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:27:01,925 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 130 flow [2024-11-10 10:27:01,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-10 10:27:01,928 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-11-10 10:27:01,929 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 130 flow [2024-11-10 10:27:01,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:01,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:01,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:01,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:27:01,961 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:01,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash -201961152, now seen corresponding path program 4 times [2024-11-10 10:27:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968317153] [2024-11-10 10:27:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:02,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968317153] [2024-11-10 10:27:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968317153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:02,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:02,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:27:02,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656021758] [2024-11-10 10:27:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:02,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:27:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:02,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:27:02,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:27:02,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:27:02,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:02,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:27:02,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:02,168 INFO L124 PetriNetUnfolderBase]: 441/853 cut-off events. [2024-11-10 10:27:02,170 INFO L125 PetriNetUnfolderBase]: For 664/664 co-relation queries the response was YES. [2024-11-10 10:27:02,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 853 events. 441/853 cut-off events. For 664/664 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4392 event pairs, 171 based on Foata normal form. 16/857 useless extension candidates. Maximal degree in co-relation 2085. Up to 521 conditions per place. [2024-11-10 10:27:02,175 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 40 selfloop transitions, 5 changer transitions 3/57 dead transitions. [2024-11-10 10:27:02,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 296 flow [2024-11-10 10:27:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:27:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:27:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-10 10:27:02,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-11-10 10:27:02,177 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 130 flow. Second operand 4 states and 85 transitions. [2024-11-10 10:27:02,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 296 flow [2024-11-10 10:27:02,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 288 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 10:27:02,181 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 172 flow [2024-11-10 10:27:02,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-10 10:27:02,183 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-11-10 10:27:02,184 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 172 flow [2024-11-10 10:27:02,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:02,184 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] [2024-11-10 10:27:02,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:27:02,185 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:02,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1283644681, now seen corresponding path program 1 times [2024-11-10 10:27:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118912402] [2024-11-10 10:27:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118912402] [2024-11-10 10:27:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118912402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:02,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:02,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:27:02,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368613167] [2024-11-10 10:27:02,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:02,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:27:02,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:02,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:27:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:27:02,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:27:02,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:02,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:27:02,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:02,395 INFO L124 PetriNetUnfolderBase]: 532/970 cut-off events. [2024-11-10 10:27:02,395 INFO L125 PetriNetUnfolderBase]: For 1045/1045 co-relation queries the response was YES. [2024-11-10 10:27:02,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 970 events. 532/970 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4889 event pairs, 159 based on Foata normal form. 18/984 useless extension candidates. Maximal degree in co-relation 2462. Up to 683 conditions per place. [2024-11-10 10:27:02,403 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 44 selfloop transitions, 6 changer transitions 2/60 dead transitions. [2024-11-10 10:27:02,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 345 flow [2024-11-10 10:27:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:27:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:27:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-10 10:27:02,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-11-10 10:27:02,404 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 172 flow. Second operand 4 states and 84 transitions. [2024-11-10 10:27:02,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 345 flow [2024-11-10 10:27:02,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 331 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 10:27:02,406 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 204 flow [2024-11-10 10:27:02,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-10 10:27:02,407 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2024-11-10 10:27:02,407 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 204 flow [2024-11-10 10:27:02,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:02,408 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] [2024-11-10 10:27:02,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:27:02,408 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:02,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash -528640845, now seen corresponding path program 2 times [2024-11-10 10:27:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:02,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074234785] [2024-11-10 10:27:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074234785] [2024-11-10 10:27:02,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074234785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:02,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:02,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:27:02,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111589406] [2024-11-10 10:27:02,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:02,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:27:02,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:02,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:27:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:27:02,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:27:02,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:02,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:27:02,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:02,558 INFO L124 PetriNetUnfolderBase]: 481/869 cut-off events. [2024-11-10 10:27:02,559 INFO L125 PetriNetUnfolderBase]: For 1149/1157 co-relation queries the response was YES. [2024-11-10 10:27:02,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 869 events. 481/869 cut-off events. For 1149/1157 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4207 event pairs, 176 based on Foata normal form. 20/886 useless extension candidates. Maximal degree in co-relation 2309. Up to 432 conditions per place. [2024-11-10 10:27:02,563 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 49 selfloop transitions, 8 changer transitions 2/67 dead transitions. [2024-11-10 10:27:02,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 415 flow [2024-11-10 10:27:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:27:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:27:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-10 10:27:02,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2024-11-10 10:27:02,564 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 204 flow. Second operand 4 states and 87 transitions. [2024-11-10 10:27:02,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 415 flow [2024-11-10 10:27:02,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 409 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-10 10:27:02,566 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 220 flow [2024-11-10 10:27:02,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-11-10 10:27:02,567 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-11-10 10:27:02,567 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 220 flow [2024-11-10 10:27:02,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:02,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:02,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:27:02,568 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:02,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash -398338881, now seen corresponding path program 1 times [2024-11-10 10:27:02,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:02,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442971468] [2024-11-10 10:27:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:02,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442971468] [2024-11-10 10:27:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442971468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:02,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:02,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:27:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095239641] [2024-11-10 10:27:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:02,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:27:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:27:02,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:27:02,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-10 10:27:02,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:02,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-10 10:27:02,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:02,684 INFO L124 PetriNetUnfolderBase]: 435/829 cut-off events. [2024-11-10 10:27:02,684 INFO L125 PetriNetUnfolderBase]: For 1265/1273 co-relation queries the response was YES. [2024-11-10 10:27:02,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 829 events. 435/829 cut-off events. For 1265/1273 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4121 event pairs, 284 based on Foata normal form. 2/821 useless extension candidates. Maximal degree in co-relation 2283. Up to 725 conditions per place. [2024-11-10 10:27:02,688 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-10 10:27:02,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 300 flow [2024-11-10 10:27:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:27:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:27:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-10 10:27:02,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-11-10 10:27:02,690 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 220 flow. Second operand 3 states and 55 transitions. [2024-11-10 10:27:02,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 300 flow [2024-11-10 10:27:02,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 288 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 10:27:02,692 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 232 flow [2024-11-10 10:27:02,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-11-10 10:27:02,693 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2024-11-10 10:27:02,693 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 232 flow [2024-11-10 10:27:02,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:02,693 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] [2024-11-10 10:27:02,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:27:02,693 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:02,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash 616271903, now seen corresponding path program 1 times [2024-11-10 10:27:02,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:02,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362962832] [2024-11-10 10:27:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:02,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:27:02,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362962832] [2024-11-10 10:27:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362962832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142025035] [2024-11-10 10:27:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:02,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:02,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:02,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:02,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:27:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:02,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 10:27:02,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:27:02,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:27:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:27:02,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142025035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:27:02,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:27:02,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-10 10:27:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647247252] [2024-11-10 10:27:02,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:27:02,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:27:02,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:27:02,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:27:02,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-10 10:27:02,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:02,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:02,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-10 10:27:02,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:03,032 INFO L124 PetriNetUnfolderBase]: 435/841 cut-off events. [2024-11-10 10:27:03,032 INFO L125 PetriNetUnfolderBase]: For 1068/1068 co-relation queries the response was YES. [2024-11-10 10:27:03,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 841 events. 435/841 cut-off events. For 1068/1068 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4124 event pairs, 284 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 2261. Up to 725 conditions per place. [2024-11-10 10:27:03,036 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 34 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-11-10 10:27:03,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 344 flow [2024-11-10 10:27:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:27:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:27:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-11-10 10:27:03,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-11-10 10:27:03,037 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 232 flow. Second operand 6 states and 92 transitions. [2024-11-10 10:27:03,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 344 flow [2024-11-10 10:27:03,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:27:03,039 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 300 flow [2024-11-10 10:27:03,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-10 10:27:03,040 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-11-10 10:27:03,040 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 300 flow [2024-11-10 10:27:03,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:03,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:03,040 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:03,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:27:03,244 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 [2024-11-10 10:27:03,245 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:03,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash 955360097, now seen corresponding path program 2 times [2024-11-10 10:27:03,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:03,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601373853] [2024-11-10 10:27:03,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:03,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 10:27:03,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:03,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601373853] [2024-11-10 10:27:03,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601373853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:03,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173339404] [2024-11-10 10:27:03,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:27:03,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:03,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:03,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:03,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:27:03,423 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:27:03,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:27:03,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 10:27:03,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:03,734 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:27:03,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 64 [2024-11-10 10:27:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-10 10:27:03,823 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:27:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173339404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:03,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:27:03,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-10 10:27:03,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482635007] [2024-11-10 10:27:03,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:03,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:27:03,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:03,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:27:03,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:27:03,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:03,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:03,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:03,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:03,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:04,222 INFO L124 PetriNetUnfolderBase]: 596/1150 cut-off events. [2024-11-10 10:27:04,222 INFO L125 PetriNetUnfolderBase]: For 1356/1356 co-relation queries the response was YES. [2024-11-10 10:27:04,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3047 conditions, 1150 events. 596/1150 cut-off events. For 1356/1356 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6290 event pairs, 115 based on Foata normal form. 6/1154 useless extension candidates. Maximal degree in co-relation 3030. Up to 388 conditions per place. [2024-11-10 10:27:04,228 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 83 selfloop transitions, 10 changer transitions 16/118 dead transitions. [2024-11-10 10:27:04,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 118 transitions, 783 flow [2024-11-10 10:27:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:27:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:27:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-11-10 10:27:04,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-11-10 10:27:04,229 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 300 flow. Second operand 9 states and 180 transitions. [2024-11-10 10:27:04,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 118 transitions, 783 flow [2024-11-10 10:27:04,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 118 transitions, 767 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-10 10:27:04,233 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 335 flow [2024-11-10 10:27:04,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=335, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2024-11-10 10:27:04,235 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2024-11-10 10:27:04,235 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 335 flow [2024-11-10 10:27:04,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:04,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:04,235 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:04,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:27:04,436 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 [2024-11-10 10:27:04,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:04,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:04,437 INFO L85 PathProgramCache]: Analyzing trace with hash 703156637, now seen corresponding path program 3 times [2024-11-10 10:27:04,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:04,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980938924] [2024-11-10 10:27:04,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:04,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 10:27:04,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:04,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980938924] [2024-11-10 10:27:04,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980938924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:04,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232646715] [2024-11-10 10:27:04,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:27:04,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:04,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:04,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:04,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:27:04,686 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:27:04,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:27:04,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 10:27:04,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:04,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:27:04,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-10 10:27:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-10 10:27:04,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:27:04,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232646715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:04,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:27:04,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-10 10:27:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961394656] [2024-11-10 10:27:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:04,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:27:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:27:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:27:04,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:04,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 335 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:04,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:04,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:04,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:05,625 INFO L124 PetriNetUnfolderBase]: 655/1310 cut-off events. [2024-11-10 10:27:05,625 INFO L125 PetriNetUnfolderBase]: For 2203/2211 co-relation queries the response was YES. [2024-11-10 10:27:05,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3957 conditions, 1310 events. 655/1310 cut-off events. For 2203/2211 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7694 event pairs, 129 based on Foata normal form. 13/1323 useless extension candidates. Maximal degree in co-relation 3934. Up to 378 conditions per place. [2024-11-10 10:27:05,633 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 113 selfloop transitions, 26 changer transitions 6/154 dead transitions. [2024-11-10 10:27:05,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 154 transitions, 1053 flow [2024-11-10 10:27:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:27:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:27:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 274 transitions. [2024-11-10 10:27:05,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2024-11-10 10:27:05,634 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 335 flow. Second operand 14 states and 274 transitions. [2024-11-10 10:27:05,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 154 transitions, 1053 flow [2024-11-10 10:27:05,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 154 transitions, 995 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-11-10 10:27:05,639 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 540 flow [2024-11-10 10:27:05,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=540, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-11-10 10:27:05,639 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-11-10 10:27:05,640 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 540 flow [2024-11-10 10:27:05,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:05,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:05,640 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:05,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:27:05,842 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 [2024-11-10 10:27:05,844 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:05,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1306384501, now seen corresponding path program 4 times [2024-11-10 10:27:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:05,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422206163] [2024-11-10 10:27:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:05,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 10:27:06,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:06,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422206163] [2024-11-10 10:27:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422206163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:06,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180840747] [2024-11-10 10:27:06,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:27:06,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:06,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:06,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:06,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:27:06,128 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:27:06,128 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:27:06,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 10:27:06,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:06,328 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-10 10:27:06,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 64 [2024-11-10 10:27:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-10 10:27:06,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:27:06,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180840747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:06,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:27:06,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-10 10:27:06,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307927564] [2024-11-10 10:27:06,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:06,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:27:06,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:06,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:27:06,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:27:06,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:06,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:06,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:06,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:06,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:06,792 INFO L124 PetriNetUnfolderBase]: 658/1308 cut-off events. [2024-11-10 10:27:06,792 INFO L125 PetriNetUnfolderBase]: For 3578/3586 co-relation queries the response was YES. [2024-11-10 10:27:06,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 1308 events. 658/1308 cut-off events. For 3578/3586 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7655 event pairs, 151 based on Foata normal form. 14/1319 useless extension candidates. Maximal degree in co-relation 4428. Up to 378 conditions per place. [2024-11-10 10:27:06,825 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 93 selfloop transitions, 22 changer transitions 12/136 dead transitions. [2024-11-10 10:27:06,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 1086 flow [2024-11-10 10:27:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:27:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:27:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-11-10 10:27:06,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-11-10 10:27:06,827 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 540 flow. Second operand 10 states and 205 transitions. [2024-11-10 10:27:06,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 1086 flow [2024-11-10 10:27:06,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 136 transitions, 1018 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-10 10:27:06,835 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 560 flow [2024-11-10 10:27:06,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-11-10 10:27:06,836 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 61 predicate places. [2024-11-10 10:27:06,837 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 560 flow [2024-11-10 10:27:06,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:06,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:06,837 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:06,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:27:07,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:07,038 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:07,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1007794497, now seen corresponding path program 5 times [2024-11-10 10:27:07,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:07,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895056546] [2024-11-10 10:27:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 10:27:07,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895056546] [2024-11-10 10:27:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895056546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741583869] [2024-11-10 10:27:07,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:27:07,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:07,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:07,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:07,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:27:07,262 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-10 10:27:07,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:27:07,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:27:07,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 10:27:07,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:27:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 10:27:07,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741583869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:27:07,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:27:07,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-10 10:27:07,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311344276] [2024-11-10 10:27:07,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:27:07,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:27:07,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:07,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:27:07,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:27:07,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-10 10:27:07,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 560 flow. Second operand has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:07,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:07,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-10 10:27:07,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:07,547 INFO L124 PetriNetUnfolderBase]: 614/1240 cut-off events. [2024-11-10 10:27:07,548 INFO L125 PetriNetUnfolderBase]: For 3821/3821 co-relation queries the response was YES. [2024-11-10 10:27:07,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 1240 events. 614/1240 cut-off events. For 3821/3821 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7113 event pairs, 416 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 4270. Up to 1053 conditions per place. [2024-11-10 10:27:07,555 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 56 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-11-10 10:27:07,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 75 transitions, 708 flow [2024-11-10 10:27:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:27:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:27:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-11-10 10:27:07,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37218045112781956 [2024-11-10 10:27:07,556 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 560 flow. Second operand 7 states and 99 transitions. [2024-11-10 10:27:07,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 75 transitions, 708 flow [2024-11-10 10:27:07,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 75 transitions, 667 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-10 10:27:07,563 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 567 flow [2024-11-10 10:27:07,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=567, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-11-10 10:27:07,564 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-11-10 10:27:07,564 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 567 flow [2024-11-10 10:27:07,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:07,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:07,564 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:07,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:27:07,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 10:27:07,769 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:07,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:07,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1071996437, now seen corresponding path program 6 times [2024-11-10 10:27:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:07,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786024858] [2024-11-10 10:27:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:08,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:08,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786024858] [2024-11-10 10:27:08,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786024858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:08,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:08,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180916329] [2024-11-10 10:27:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:08,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:08,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:08,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:08,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 567 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:08,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:08,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:08,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:09,459 INFO L124 PetriNetUnfolderBase]: 872/1739 cut-off events. [2024-11-10 10:27:09,460 INFO L125 PetriNetUnfolderBase]: For 4491/4499 co-relation queries the response was YES. [2024-11-10 10:27:09,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5726 conditions, 1739 events. 872/1739 cut-off events. For 4491/4499 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10967 event pairs, 88 based on Foata normal form. 16/1751 useless extension candidates. Maximal degree in co-relation 5694. Up to 282 conditions per place. [2024-11-10 10:27:09,470 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 138 selfloop transitions, 90 changer transitions 20/257 dead transitions. [2024-11-10 10:27:09,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 257 transitions, 1946 flow [2024-11-10 10:27:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-10 10:27:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-10 10:27:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 561 transitions. [2024-11-10 10:27:09,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4613486842105263 [2024-11-10 10:27:09,473 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 567 flow. Second operand 32 states and 561 transitions. [2024-11-10 10:27:09,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 257 transitions, 1946 flow [2024-11-10 10:27:09,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 257 transitions, 1918 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-10 10:27:09,481 INFO L231 Difference]: Finished difference. Result has 124 places, 139 transitions, 1323 flow [2024-11-10 10:27:09,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1323, PETRI_PLACES=124, PETRI_TRANSITIONS=139} [2024-11-10 10:27:09,481 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 92 predicate places. [2024-11-10 10:27:09,481 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 139 transitions, 1323 flow [2024-11-10 10:27:09,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:09,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:09,482 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:09,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 10:27:09,482 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:09,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2013974187, now seen corresponding path program 7 times [2024-11-10 10:27:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:09,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750260110] [2024-11-10 10:27:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:09,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:10,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750260110] [2024-11-10 10:27:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750260110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:10,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:10,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55933684] [2024-11-10 10:27:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:10,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:10,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:10,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 139 transitions, 1323 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:10,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:10,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:10,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:10,820 INFO L124 PetriNetUnfolderBase]: 1155/2340 cut-off events. [2024-11-10 10:27:10,820 INFO L125 PetriNetUnfolderBase]: For 8446/8446 co-relation queries the response was YES. [2024-11-10 10:27:10,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8679 conditions, 2340 events. 1155/2340 cut-off events. For 8446/8446 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16084 event pairs, 108 based on Foata normal form. 1/2333 useless extension candidates. Maximal degree in co-relation 8640. Up to 432 conditions per place. [2024-11-10 10:27:10,843 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 159 selfloop transitions, 102 changer transitions 10/280 dead transitions. [2024-11-10 10:27:10,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 280 transitions, 2824 flow [2024-11-10 10:27:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 10:27:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 10:27:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 386 transitions. [2024-11-10 10:27:10,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48370927318295737 [2024-11-10 10:27:10,847 INFO L175 Difference]: Start difference. First operand has 124 places, 139 transitions, 1323 flow. Second operand 21 states and 386 transitions. [2024-11-10 10:27:10,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 280 transitions, 2824 flow [2024-11-10 10:27:10,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 280 transitions, 2349 flow, removed 185 selfloop flow, removed 15 redundant places. [2024-11-10 10:27:10,880 INFO L231 Difference]: Finished difference. Result has 136 places, 195 transitions, 1875 flow [2024-11-10 10:27:10,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1875, PETRI_PLACES=136, PETRI_TRANSITIONS=195} [2024-11-10 10:27:10,882 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 104 predicate places. [2024-11-10 10:27:10,882 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 195 transitions, 1875 flow [2024-11-10 10:27:10,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:10,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:10,883 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:10,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 10:27:10,883 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:10,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:10,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2064005931, now seen corresponding path program 8 times [2024-11-10 10:27:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777230786] [2024-11-10 10:27:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:10,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:11,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:11,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777230786] [2024-11-10 10:27:11,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777230786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:11,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:11,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:11,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176740758] [2024-11-10 10:27:11,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:11,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:11,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:11,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:11,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:11,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:11,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 195 transitions, 1875 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:11,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:11,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:11,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:12,224 INFO L124 PetriNetUnfolderBase]: 1171/2396 cut-off events. [2024-11-10 10:27:12,224 INFO L125 PetriNetUnfolderBase]: For 8335/8335 co-relation queries the response was YES. [2024-11-10 10:27:12,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8825 conditions, 2396 events. 1171/2396 cut-off events. For 8335/8335 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16686 event pairs, 152 based on Foata normal form. 1/2386 useless extension candidates. Maximal degree in co-relation 8782. Up to 558 conditions per place. [2024-11-10 10:27:12,242 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 155 selfloop transitions, 122 changer transitions 10/296 dead transitions. [2024-11-10 10:27:12,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 296 transitions, 2915 flow [2024-11-10 10:27:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 10:27:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 10:27:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 425 transitions. [2024-11-10 10:27:12,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4862700228832952 [2024-11-10 10:27:12,246 INFO L175 Difference]: Start difference. First operand has 136 places, 195 transitions, 1875 flow. Second operand 23 states and 425 transitions. [2024-11-10 10:27:12,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 296 transitions, 2915 flow [2024-11-10 10:27:12,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 296 transitions, 2800 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-11-10 10:27:12,286 INFO L231 Difference]: Finished difference. Result has 160 places, 209 transitions, 2221 flow [2024-11-10 10:27:12,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2221, PETRI_PLACES=160, PETRI_TRANSITIONS=209} [2024-11-10 10:27:12,286 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2024-11-10 10:27:12,286 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 209 transitions, 2221 flow [2024-11-10 10:27:12,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:12,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:12,287 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:12,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 10:27:12,287 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:12,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash 353054797, now seen corresponding path program 9 times [2024-11-10 10:27:12,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:12,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367943882] [2024-11-10 10:27:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:12,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:12,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367943882] [2024-11-10 10:27:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367943882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829945349] [2024-11-10 10:27:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:12,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:12,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:12,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 209 transitions, 2221 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:12,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:12,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:12,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:13,835 INFO L124 PetriNetUnfolderBase]: 1239/2525 cut-off events. [2024-11-10 10:27:13,835 INFO L125 PetriNetUnfolderBase]: For 9436/9448 co-relation queries the response was YES. [2024-11-10 10:27:13,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9872 conditions, 2525 events. 1239/2525 cut-off events. For 9436/9448 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 17656 event pairs, 146 based on Foata normal form. 15/2529 useless extension candidates. Maximal degree in co-relation 9824. Up to 564 conditions per place. [2024-11-10 10:27:13,872 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 179 selfloop transitions, 134 changer transitions 11/333 dead transitions. [2024-11-10 10:27:13,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 333 transitions, 3420 flow [2024-11-10 10:27:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 10:27:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 10:27:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 521 transitions. [2024-11-10 10:27:13,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48966165413533835 [2024-11-10 10:27:13,875 INFO L175 Difference]: Start difference. First operand has 160 places, 209 transitions, 2221 flow. Second operand 28 states and 521 transitions. [2024-11-10 10:27:13,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 333 transitions, 3420 flow [2024-11-10 10:27:13,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 333 transitions, 3280 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-11-10 10:27:13,946 INFO L231 Difference]: Finished difference. Result has 182 places, 219 transitions, 2545 flow [2024-11-10 10:27:13,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2545, PETRI_PLACES=182, PETRI_TRANSITIONS=219} [2024-11-10 10:27:13,947 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-11-10 10:27:13,947 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 219 transitions, 2545 flow [2024-11-10 10:27:13,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:13,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:13,947 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:13,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 10:27:13,947 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:13,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -554648121, now seen corresponding path program 10 times [2024-11-10 10:27:13,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:13,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740646759] [2024-11-10 10:27:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:14,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:14,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740646759] [2024-11-10 10:27:14,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740646759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:14,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:14,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:14,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395409807] [2024-11-10 10:27:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:14,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:14,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:14,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:14,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 219 transitions, 2545 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:14,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:14,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:14,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:15,226 INFO L124 PetriNetUnfolderBase]: 1289/2646 cut-off events. [2024-11-10 10:27:15,226 INFO L125 PetriNetUnfolderBase]: For 11514/11514 co-relation queries the response was YES. [2024-11-10 10:27:15,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10925 conditions, 2646 events. 1289/2646 cut-off events. For 11514/11514 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 18985 event pairs, 182 based on Foata normal form. 1/2630 useless extension candidates. Maximal degree in co-relation 10873. Up to 662 conditions per place. [2024-11-10 10:27:15,244 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 151 selfloop transitions, 125 changer transitions 9/294 dead transitions. [2024-11-10 10:27:15,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 294 transitions, 3449 flow [2024-11-10 10:27:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 10:27:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-10 10:27:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 365 transitions. [2024-11-10 10:27:15,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-11-10 10:27:15,246 INFO L175 Difference]: Start difference. First operand has 182 places, 219 transitions, 2545 flow. Second operand 20 states and 365 transitions. [2024-11-10 10:27:15,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 294 transitions, 3449 flow [2024-11-10 10:27:15,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 294 transitions, 3229 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-11-10 10:27:15,272 INFO L231 Difference]: Finished difference. Result has 185 places, 223 transitions, 2662 flow [2024-11-10 10:27:15,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2354, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2662, PETRI_PLACES=185, PETRI_TRANSITIONS=223} [2024-11-10 10:27:15,272 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2024-11-10 10:27:15,272 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 223 transitions, 2662 flow [2024-11-10 10:27:15,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:15,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:15,273 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:15,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 10:27:15,273 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:15,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:15,273 INFO L85 PathProgramCache]: Analyzing trace with hash -425792487, now seen corresponding path program 11 times [2024-11-10 10:27:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:15,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798600367] [2024-11-10 10:27:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:15,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:15,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:15,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798600367] [2024-11-10 10:27:15,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798600367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:15,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:15,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029263645] [2024-11-10 10:27:15,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:15,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:15,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:15,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 223 transitions, 2662 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:15,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:15,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:15,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:16,373 INFO L124 PetriNetUnfolderBase]: 1321/2694 cut-off events. [2024-11-10 10:27:16,373 INFO L125 PetriNetUnfolderBase]: For 12987/12987 co-relation queries the response was YES. [2024-11-10 10:27:16,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11406 conditions, 2694 events. 1321/2694 cut-off events. For 12987/12987 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 19447 event pairs, 265 based on Foata normal form. 1/2664 useless extension candidates. Maximal degree in co-relation 11353. Up to 788 conditions per place. [2024-11-10 10:27:16,392 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 166 selfloop transitions, 102 changer transitions 9/286 dead transitions. [2024-11-10 10:27:16,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 286 transitions, 3519 flow [2024-11-10 10:27:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:27:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:27:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 307 transitions. [2024-11-10 10:27:16,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47523219814241485 [2024-11-10 10:27:16,397 INFO L175 Difference]: Start difference. First operand has 185 places, 223 transitions, 2662 flow. Second operand 17 states and 307 transitions. [2024-11-10 10:27:16,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 286 transitions, 3519 flow [2024-11-10 10:27:16,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 286 transitions, 3286 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-11-10 10:27:16,427 INFO L231 Difference]: Finished difference. Result has 187 places, 229 transitions, 2785 flow [2024-11-10 10:27:16,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2785, PETRI_PLACES=187, PETRI_TRANSITIONS=229} [2024-11-10 10:27:16,428 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2024-11-10 10:27:16,428 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 229 transitions, 2785 flow [2024-11-10 10:27:16,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:16,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:16,429 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:16,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 10:27:16,429 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:16,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1795400473, now seen corresponding path program 12 times [2024-11-10 10:27:16,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:16,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084739686] [2024-11-10 10:27:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:16,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:16,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084739686] [2024-11-10 10:27:16,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084739686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:16,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807679779] [2024-11-10 10:27:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:16,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:16,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:16,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:17,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:17,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 229 transitions, 2785 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:17,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:17,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:17,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:17,914 INFO L124 PetriNetUnfolderBase]: 1312/2720 cut-off events. [2024-11-10 10:27:17,914 INFO L125 PetriNetUnfolderBase]: For 12689/12689 co-relation queries the response was YES. [2024-11-10 10:27:17,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11609 conditions, 2720 events. 1312/2720 cut-off events. For 12689/12689 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 19867 event pairs, 81 based on Foata normal form. 1/2711 useless extension candidates. Maximal degree in co-relation 11553. Up to 441 conditions per place. [2024-11-10 10:27:17,948 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 131 selfloop transitions, 165 changer transitions 9/314 dead transitions. [2024-11-10 10:27:17,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 314 transitions, 3829 flow [2024-11-10 10:27:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:27:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:27:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 396 transitions. [2024-11-10 10:27:17,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-10 10:27:17,949 INFO L175 Difference]: Start difference. First operand has 187 places, 229 transitions, 2785 flow. Second operand 22 states and 396 transitions. [2024-11-10 10:27:17,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 314 transitions, 3829 flow [2024-11-10 10:27:18,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 314 transitions, 3700 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-10 10:27:18,030 INFO L231 Difference]: Finished difference. Result has 201 places, 242 transitions, 3244 flow [2024-11-10 10:27:18,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3244, PETRI_PLACES=201, PETRI_TRANSITIONS=242} [2024-11-10 10:27:18,035 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-11-10 10:27:18,035 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 242 transitions, 3244 flow [2024-11-10 10:27:18,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:18,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:18,035 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:18,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 10:27:18,035 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:18,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1612795605, now seen corresponding path program 13 times [2024-11-10 10:27:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:18,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174721748] [2024-11-10 10:27:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:18,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174721748] [2024-11-10 10:27:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174721748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:18,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:18,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:18,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252153059] [2024-11-10 10:27:18,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:18,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:18,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:18,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:18,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:18,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 242 transitions, 3244 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:18,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:18,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:18,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:19,609 INFO L124 PetriNetUnfolderBase]: 1468/3045 cut-off events. [2024-11-10 10:27:19,609 INFO L125 PetriNetUnfolderBase]: For 17658/17670 co-relation queries the response was YES. [2024-11-10 10:27:19,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13700 conditions, 3045 events. 1468/3045 cut-off events. For 17658/17670 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 22697 event pairs, 154 based on Foata normal form. 13/3051 useless extension candidates. Maximal degree in co-relation 13642. Up to 632 conditions per place. [2024-11-10 10:27:19,632 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 197 selfloop transitions, 174 changer transitions 8/388 dead transitions. [2024-11-10 10:27:19,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 388 transitions, 5226 flow [2024-11-10 10:27:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:27:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:27:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 410 transitions. [2024-11-10 10:27:19,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-11-10 10:27:19,636 INFO L175 Difference]: Start difference. First operand has 201 places, 242 transitions, 3244 flow. Second operand 22 states and 410 transitions. [2024-11-10 10:27:19,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 388 transitions, 5226 flow [2024-11-10 10:27:19,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 388 transitions, 4951 flow, removed 17 selfloop flow, removed 18 redundant places. [2024-11-10 10:27:19,685 INFO L231 Difference]: Finished difference. Result has 216 places, 291 transitions, 4301 flow [2024-11-10 10:27:19,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4301, PETRI_PLACES=216, PETRI_TRANSITIONS=291} [2024-11-10 10:27:19,686 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 184 predicate places. [2024-11-10 10:27:19,686 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 291 transitions, 4301 flow [2024-11-10 10:27:19,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:19,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:19,686 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:19,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 10:27:19,686 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:19,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2123037431, now seen corresponding path program 14 times [2024-11-10 10:27:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:19,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729887935] [2024-11-10 10:27:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:19,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:20,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729887935] [2024-11-10 10:27:20,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729887935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:20,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:20,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625275306] [2024-11-10 10:27:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:20,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:20,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:20,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 291 transitions, 4301 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:20,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:20,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:20,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:21,084 INFO L124 PetriNetUnfolderBase]: 1480/3024 cut-off events. [2024-11-10 10:27:21,085 INFO L125 PetriNetUnfolderBase]: For 21672/21672 co-relation queries the response was YES. [2024-11-10 10:27:21,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14544 conditions, 3024 events. 1480/3024 cut-off events. For 21672/21672 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 22237 event pairs, 299 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 14475. Up to 748 conditions per place. [2024-11-10 10:27:21,119 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 229 selfloop transitions, 122 changer transitions 7/367 dead transitions. [2024-11-10 10:27:21,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 367 transitions, 5476 flow [2024-11-10 10:27:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:27:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:27:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 316 transitions. [2024-11-10 10:27:21,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891640866873065 [2024-11-10 10:27:21,124 INFO L175 Difference]: Start difference. First operand has 216 places, 291 transitions, 4301 flow. Second operand 17 states and 316 transitions. [2024-11-10 10:27:21,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 367 transitions, 5476 flow [2024-11-10 10:27:21,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 367 transitions, 5401 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-11-10 10:27:21,201 INFO L231 Difference]: Finished difference. Result has 232 places, 294 transitions, 4553 flow [2024-11-10 10:27:21,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4553, PETRI_PLACES=232, PETRI_TRANSITIONS=294} [2024-11-10 10:27:21,202 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 200 predicate places. [2024-11-10 10:27:21,202 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 294 transitions, 4553 flow [2024-11-10 10:27:21,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:21,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:21,203 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:21,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 10:27:21,203 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:21,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash 98155529, now seen corresponding path program 15 times [2024-11-10 10:27:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002411824] [2024-11-10 10:27:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002411824] [2024-11-10 10:27:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002411824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780360527] [2024-11-10 10:27:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:21,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:21,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:21,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 294 transitions, 4553 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:21,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:21,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:21,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:22,687 INFO L124 PetriNetUnfolderBase]: 1471/3042 cut-off events. [2024-11-10 10:27:22,687 INFO L125 PetriNetUnfolderBase]: For 24923/24923 co-relation queries the response was YES. [2024-11-10 10:27:22,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14956 conditions, 3042 events. 1471/3042 cut-off events. For 24923/24923 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22528 event pairs, 99 based on Foata normal form. 1/3038 useless extension candidates. Maximal degree in co-relation 14884. Up to 434 conditions per place. [2024-11-10 10:27:22,716 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 152 selfloop transitions, 226 changer transitions 7/394 dead transitions. [2024-11-10 10:27:22,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 394 transitions, 5839 flow [2024-11-10 10:27:22,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 10:27:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 10:27:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 461 transitions. [2024-11-10 10:27:22,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48526315789473684 [2024-11-10 10:27:22,721 INFO L175 Difference]: Start difference. First operand has 232 places, 294 transitions, 4553 flow. Second operand 25 states and 461 transitions. [2024-11-10 10:27:22,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 394 transitions, 5839 flow [2024-11-10 10:27:22,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 394 transitions, 5588 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-11-10 10:27:22,872 INFO L231 Difference]: Finished difference. Result has 244 places, 302 transitions, 4881 flow [2024-11-10 10:27:22,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4318, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4881, PETRI_PLACES=244, PETRI_TRANSITIONS=302} [2024-11-10 10:27:22,873 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2024-11-10 10:27:22,873 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 302 transitions, 4881 flow [2024-11-10 10:27:22,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:22,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:22,874 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:22,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 10:27:22,874 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:22,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1704328201, now seen corresponding path program 16 times [2024-11-10 10:27:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:22,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133425315] [2024-11-10 10:27:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:22,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133425315] [2024-11-10 10:27:23,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133425315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:23,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:23,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266809473] [2024-11-10 10:27:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:23,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:23,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:23,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 302 transitions, 4881 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:23,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:23,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:23,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:24,435 INFO L124 PetriNetUnfolderBase]: 1510/3136 cut-off events. [2024-11-10 10:27:24,435 INFO L125 PetriNetUnfolderBase]: For 26331/26331 co-relation queries the response was YES. [2024-11-10 10:27:24,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15925 conditions, 3136 events. 1510/3136 cut-off events. For 26331/26331 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23575 event pairs, 101 based on Foata normal form. 1/3134 useless extension candidates. Maximal degree in co-relation 15853. Up to 448 conditions per place. [2024-11-10 10:27:24,463 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 144 selfloop transitions, 232 changer transitions 7/392 dead transitions. [2024-11-10 10:27:24,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 392 transitions, 6149 flow [2024-11-10 10:27:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 10:27:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 10:27:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 418 transitions. [2024-11-10 10:27:24,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-10 10:27:24,465 INFO L175 Difference]: Start difference. First operand has 244 places, 302 transitions, 4881 flow. Second operand 23 states and 418 transitions. [2024-11-10 10:27:24,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 392 transitions, 6149 flow [2024-11-10 10:27:24,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 392 transitions, 5792 flow, removed 31 selfloop flow, removed 20 redundant places. [2024-11-10 10:27:24,571 INFO L231 Difference]: Finished difference. Result has 250 places, 313 transitions, 5239 flow [2024-11-10 10:27:24,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5239, PETRI_PLACES=250, PETRI_TRANSITIONS=313} [2024-11-10 10:27:24,572 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 218 predicate places. [2024-11-10 10:27:24,572 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 313 transitions, 5239 flow [2024-11-10 10:27:24,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:24,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:24,573 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:24,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-10 10:27:24,573 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:24,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:24,574 INFO L85 PathProgramCache]: Analyzing trace with hash -6622933, now seen corresponding path program 17 times [2024-11-10 10:27:24,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:24,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995623369] [2024-11-10 10:27:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:24,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995623369] [2024-11-10 10:27:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995623369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:24,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:24,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363488273] [2024-11-10 10:27:24,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:24,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:24,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:24,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 313 transitions, 5239 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:24,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:24,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:24,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:25,893 INFO L124 PetriNetUnfolderBase]: 1516/3163 cut-off events. [2024-11-10 10:27:25,893 INFO L125 PetriNetUnfolderBase]: For 28781/28781 co-relation queries the response was YES. [2024-11-10 10:27:25,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16284 conditions, 3163 events. 1516/3163 cut-off events. For 28781/28781 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23879 event pairs, 95 based on Foata normal form. 1/3159 useless extension candidates. Maximal degree in co-relation 16211. Up to 450 conditions per place. [2024-11-10 10:27:25,919 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 148 selfloop transitions, 230 changer transitions 7/394 dead transitions. [2024-11-10 10:27:25,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 394 transitions, 6374 flow [2024-11-10 10:27:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:27:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:27:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 402 transitions. [2024-11-10 10:27:25,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-11-10 10:27:25,921 INFO L175 Difference]: Start difference. First operand has 250 places, 313 transitions, 5239 flow. Second operand 22 states and 402 transitions. [2024-11-10 10:27:25,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 394 transitions, 6374 flow [2024-11-10 10:27:26,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 394 transitions, 6062 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-11-10 10:27:26,007 INFO L231 Difference]: Finished difference. Result has 259 places, 316 transitions, 5455 flow [2024-11-10 10:27:26,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4946, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5455, PETRI_PLACES=259, PETRI_TRANSITIONS=316} [2024-11-10 10:27:26,008 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 227 predicate places. [2024-11-10 10:27:26,008 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 316 transitions, 5455 flow [2024-11-10 10:27:26,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:26,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:26,008 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:26,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-10 10:27:26,008 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:26,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2075576709, now seen corresponding path program 18 times [2024-11-10 10:27:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829261321] [2024-11-10 10:27:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:26,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:26,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829261321] [2024-11-10 10:27:26,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829261321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:26,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:26,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051440391] [2024-11-10 10:27:26,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:26,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:26,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:26,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 316 transitions, 5455 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:26,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:26,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:26,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:27,190 INFO L124 PetriNetUnfolderBase]: 1501/3093 cut-off events. [2024-11-10 10:27:27,191 INFO L125 PetriNetUnfolderBase]: For 31917/31929 co-relation queries the response was YES. [2024-11-10 10:27:27,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16402 conditions, 3093 events. 1501/3093 cut-off events. For 31917/31929 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 23119 event pairs, 259 based on Foata normal form. 18/3076 useless extension candidates. Maximal degree in co-relation 16329. Up to 822 conditions per place. [2024-11-10 10:27:27,218 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 194 selfloop transitions, 152 changer transitions 11/366 dead transitions. [2024-11-10 10:27:27,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 366 transitions, 6356 flow [2024-11-10 10:27:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 10:27:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 10:27:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 288 transitions. [2024-11-10 10:27:27,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-10 10:27:27,219 INFO L175 Difference]: Start difference. First operand has 259 places, 316 transitions, 5455 flow. Second operand 16 states and 288 transitions. [2024-11-10 10:27:27,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 366 transitions, 6356 flow [2024-11-10 10:27:27,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 366 transitions, 6058 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-11-10 10:27:27,316 INFO L231 Difference]: Finished difference. Result has 261 places, 314 transitions, 5456 flow [2024-11-10 10:27:27,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5144, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5456, PETRI_PLACES=261, PETRI_TRANSITIONS=314} [2024-11-10 10:27:27,317 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2024-11-10 10:27:27,317 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 314 transitions, 5456 flow [2024-11-10 10:27:27,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:27,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:27,318 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:27,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-10 10:27:27,318 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:27,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:27,318 INFO L85 PathProgramCache]: Analyzing trace with hash 517372613, now seen corresponding path program 19 times [2024-11-10 10:27:27,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:27,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935859298] [2024-11-10 10:27:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:27,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:27,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:27,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935859298] [2024-11-10 10:27:27,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935859298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:27,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:27,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:27,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237847759] [2024-11-10 10:27:27,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:27,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:27,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:27,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:27,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 314 transitions, 5456 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:27,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:27,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:27,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:28,936 INFO L124 PetriNetUnfolderBase]: 1713/3631 cut-off events. [2024-11-10 10:27:28,937 INFO L125 PetriNetUnfolderBase]: For 35426/35438 co-relation queries the response was YES. [2024-11-10 10:27:28,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18675 conditions, 3631 events. 1713/3631 cut-off events. For 35426/35438 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 28315 event pairs, 148 based on Foata normal form. 5/3619 useless extension candidates. Maximal degree in co-relation 18601. Up to 562 conditions per place. [2024-11-10 10:27:28,968 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 180 selfloop transitions, 256 changer transitions 11/456 dead transitions. [2024-11-10 10:27:28,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 456 transitions, 7520 flow [2024-11-10 10:27:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 10:27:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 10:27:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 463 transitions. [2024-11-10 10:27:28,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4686234817813765 [2024-11-10 10:27:28,969 INFO L175 Difference]: Start difference. First operand has 261 places, 314 transitions, 5456 flow. Second operand 26 states and 463 transitions. [2024-11-10 10:27:28,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 456 transitions, 7520 flow [2024-11-10 10:27:29,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 456 transitions, 7079 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-11-10 10:27:29,069 INFO L231 Difference]: Finished difference. Result has 277 places, 359 transitions, 6455 flow [2024-11-10 10:27:29,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5074, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6455, PETRI_PLACES=277, PETRI_TRANSITIONS=359} [2024-11-10 10:27:29,070 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 245 predicate places. [2024-11-10 10:27:29,070 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 359 transitions, 6455 flow [2024-11-10 10:27:29,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:29,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:29,071 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:29,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-10 10:27:29,071 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:29,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1456766715, now seen corresponding path program 20 times [2024-11-10 10:27:29,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:29,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318473887] [2024-11-10 10:27:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:29,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:29,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318473887] [2024-11-10 10:27:29,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318473887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:29,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:29,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:29,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072952590] [2024-11-10 10:27:29,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:29,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:29,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:29,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 359 transitions, 6455 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:29,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:29,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:29,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:30,535 INFO L124 PetriNetUnfolderBase]: 1799/3881 cut-off events. [2024-11-10 10:27:30,535 INFO L125 PetriNetUnfolderBase]: For 37367/37379 co-relation queries the response was YES. [2024-11-10 10:27:30,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20162 conditions, 3881 events. 1799/3881 cut-off events. For 37367/37379 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 31251 event pairs, 103 based on Foata normal form. 5/3869 useless extension candidates. Maximal degree in co-relation 20082. Up to 634 conditions per place. [2024-11-10 10:27:30,570 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 130 selfloop transitions, 288 changer transitions 7/434 dead transitions. [2024-11-10 10:27:30,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 434 transitions, 7720 flow [2024-11-10 10:27:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 10:27:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 10:27:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 362 transitions. [2024-11-10 10:27:30,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45363408521303256 [2024-11-10 10:27:30,571 INFO L175 Difference]: Start difference. First operand has 277 places, 359 transitions, 6455 flow. Second operand 21 states and 362 transitions. [2024-11-10 10:27:30,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 434 transitions, 7720 flow [2024-11-10 10:27:30,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 434 transitions, 7326 flow, removed 24 selfloop flow, removed 16 redundant places. [2024-11-10 10:27:30,694 INFO L231 Difference]: Finished difference. Result has 286 places, 370 transitions, 6899 flow [2024-11-10 10:27:30,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6091, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6899, PETRI_PLACES=286, PETRI_TRANSITIONS=370} [2024-11-10 10:27:30,695 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-11-10 10:27:30,695 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 370 transitions, 6899 flow [2024-11-10 10:27:30,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:30,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:30,696 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:30,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-10 10:27:30,696 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:30,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash 7130787, now seen corresponding path program 21 times [2024-11-10 10:27:30,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:30,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099241749] [2024-11-10 10:27:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:30,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:31,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099241749] [2024-11-10 10:27:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099241749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:31,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754066055] [2024-11-10 10:27:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:31,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:31,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:31,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:31,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 370 transitions, 6899 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:31,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:31,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:31,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:32,339 INFO L124 PetriNetUnfolderBase]: 1803/3891 cut-off events. [2024-11-10 10:27:32,339 INFO L125 PetriNetUnfolderBase]: For 38136/38148 co-relation queries the response was YES. [2024-11-10 10:27:32,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20932 conditions, 3891 events. 1803/3891 cut-off events. For 38136/38148 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 31311 event pairs, 93 based on Foata normal form. 5/3883 useless extension candidates. Maximal degree in co-relation 20850. Up to 670 conditions per place. [2024-11-10 10:27:32,373 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 142 selfloop transitions, 291 changer transitions 7/449 dead transitions. [2024-11-10 10:27:32,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 449 transitions, 8095 flow [2024-11-10 10:27:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 10:27:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 10:27:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 424 transitions. [2024-11-10 10:27:32,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-11-10 10:27:32,374 INFO L175 Difference]: Start difference. First operand has 286 places, 370 transitions, 6899 flow. Second operand 24 states and 424 transitions. [2024-11-10 10:27:32,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 449 transitions, 8095 flow [2024-11-10 10:27:32,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 449 transitions, 7697 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-11-10 10:27:32,502 INFO L231 Difference]: Finished difference. Result has 301 places, 371 transitions, 7127 flow [2024-11-10 10:27:32,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6513, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=7127, PETRI_PLACES=301, PETRI_TRANSITIONS=371} [2024-11-10 10:27:32,503 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-11-10 10:27:32,503 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 371 transitions, 7127 flow [2024-11-10 10:27:32,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:32,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:32,504 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:32,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-10 10:27:32,504 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:32,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:32,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2066643549, now seen corresponding path program 22 times [2024-11-10 10:27:32,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:32,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033765487] [2024-11-10 10:27:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:32,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:32,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033765487] [2024-11-10 10:27:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033765487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:32,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:32,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 10:27:32,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42498338] [2024-11-10 10:27:32,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:32,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:27:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:32,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:27:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:27:32,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:32,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 371 transitions, 7127 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:32,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:32,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:32,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:34,345 INFO L124 PetriNetUnfolderBase]: 1875/4059 cut-off events. [2024-11-10 10:27:34,345 INFO L125 PetriNetUnfolderBase]: For 40672/40684 co-relation queries the response was YES. [2024-11-10 10:27:34,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22261 conditions, 4059 events. 1875/4059 cut-off events. For 40672/40684 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 33188 event pairs, 169 based on Foata normal form. 5/4057 useless extension candidates. Maximal degree in co-relation 22178. Up to 911 conditions per place. [2024-11-10 10:27:34,390 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 212 selfloop transitions, 238 changer transitions 8/467 dead transitions. [2024-11-10 10:27:34,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 467 transitions, 8608 flow [2024-11-10 10:27:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 10:27:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 10:27:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 439 transitions. [2024-11-10 10:27:34,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46210526315789474 [2024-11-10 10:27:34,391 INFO L175 Difference]: Start difference. First operand has 301 places, 371 transitions, 7127 flow. Second operand 25 states and 439 transitions. [2024-11-10 10:27:34,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 467 transitions, 8608 flow [2024-11-10 10:27:34,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 467 transitions, 8135 flow, removed 8 selfloop flow, removed 17 redundant places. [2024-11-10 10:27:34,541 INFO L231 Difference]: Finished difference. Result has 311 places, 382 transitions, 7505 flow [2024-11-10 10:27:34,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6685, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7505, PETRI_PLACES=311, PETRI_TRANSITIONS=382} [2024-11-10 10:27:34,542 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-11-10 10:27:34,542 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 382 transitions, 7505 flow [2024-11-10 10:27:34,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:34,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:34,543 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:34,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-10 10:27:34,543 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:34,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:34,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1876118162, now seen corresponding path program 1 times [2024-11-10 10:27:34,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:34,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676733638] [2024-11-10 10:27:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:34,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:34,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676733638] [2024-11-10 10:27:34,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676733638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021509638] [2024-11-10 10:27:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:34,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:34,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:34,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:27:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:34,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:27:34,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:34,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:27:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:34,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021509638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:27:34,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:27:34,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 10:27:34,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358427974] [2024-11-10 10:27:34,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:27:34,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:27:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:27:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:27:34,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:27:34,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 382 transitions, 7505 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:34,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:34,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:27:34,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:35,546 INFO L124 PetriNetUnfolderBase]: 2559/5215 cut-off events. [2024-11-10 10:27:35,546 INFO L125 PetriNetUnfolderBase]: For 54648/54660 co-relation queries the response was YES. [2024-11-10 10:27:35,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30155 conditions, 5215 events. 2559/5215 cut-off events. For 54648/54660 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 39663 event pairs, 667 based on Foata normal form. 410/5581 useless extension candidates. Maximal degree in co-relation 30070. Up to 988 conditions per place. [2024-11-10 10:27:35,600 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 512 selfloop transitions, 104 changer transitions 0/624 dead transitions. [2024-11-10 10:27:35,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 624 transitions, 12821 flow [2024-11-10 10:27:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:27:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:27:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-11-10 10:27:35,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-11-10 10:27:35,601 INFO L175 Difference]: Start difference. First operand has 311 places, 382 transitions, 7505 flow. Second operand 7 states and 163 transitions. [2024-11-10 10:27:35,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 624 transitions, 12821 flow [2024-11-10 10:27:35,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 624 transitions, 12350 flow, removed 30 selfloop flow, removed 23 redundant places. [2024-11-10 10:27:35,838 INFO L231 Difference]: Finished difference. Result has 297 places, 418 transitions, 8090 flow [2024-11-10 10:27:35,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7191, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8090, PETRI_PLACES=297, PETRI_TRANSITIONS=418} [2024-11-10 10:27:35,839 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-11-10 10:27:35,839 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 418 transitions, 8090 flow [2024-11-10 10:27:35,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:35,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:35,840 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:35,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 10:27:36,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:36,040 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:36,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1597053592, now seen corresponding path program 1 times [2024-11-10 10:27:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:36,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966638628] [2024-11-10 10:27:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:36,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:36,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:36,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966638628] [2024-11-10 10:27:36,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966638628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:36,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804470746] [2024-11-10 10:27:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:36,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:36,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:36,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:36,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:27:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:36,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:27:36,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:36,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:27:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804470746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:27:36,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:27:36,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-10 10:27:36,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504466203] [2024-11-10 10:27:36,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:27:36,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:27:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:36,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:27:36,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-10 10:27:36,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:27:36,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 418 transitions, 8090 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:36,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:36,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:27:36,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:37,646 INFO L124 PetriNetUnfolderBase]: 3315/6620 cut-off events. [2024-11-10 10:27:37,646 INFO L125 PetriNetUnfolderBase]: For 66146/66209 co-relation queries the response was YES. [2024-11-10 10:27:37,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39465 conditions, 6620 events. 3315/6620 cut-off events. For 66146/66209 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 48667 event pairs, 443 based on Foata normal form. 488/7093 useless extension candidates. Maximal degree in co-relation 39383. Up to 1697 conditions per place. [2024-11-10 10:27:37,730 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 564 selfloop transitions, 99 changer transitions 1/672 dead transitions. [2024-11-10 10:27:37,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 672 transitions, 13616 flow [2024-11-10 10:27:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:27:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:27:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-11-10 10:27:37,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-11-10 10:27:37,731 INFO L175 Difference]: Start difference. First operand has 297 places, 418 transitions, 8090 flow. Second operand 8 states and 164 transitions. [2024-11-10 10:27:37,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 672 transitions, 13616 flow [2024-11-10 10:27:38,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 672 transitions, 13417 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-11-10 10:27:38,034 INFO L231 Difference]: Finished difference. Result has 306 places, 457 transitions, 8995 flow [2024-11-10 10:27:38,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7974, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8995, PETRI_PLACES=306, PETRI_TRANSITIONS=457} [2024-11-10 10:27:38,035 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-11-10 10:27:38,036 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 457 transitions, 8995 flow [2024-11-10 10:27:38,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:38,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:38,036 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:38,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 10:27:38,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:38,236 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:38,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1009329555, now seen corresponding path program 1 times [2024-11-10 10:27:38,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:38,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616925023] [2024-11-10 10:27:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:38,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:38,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:38,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616925023] [2024-11-10 10:27:38,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616925023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:38,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487531620] [2024-11-10 10:27:38,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:38,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:38,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:38,664 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:38,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:27:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:38,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 10:27:38,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:38,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:27:38,968 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:27:38,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 48 [2024-11-10 10:27:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487531620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:27:38,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:27:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 20 [2024-11-10 10:27:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219595723] [2024-11-10 10:27:38,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:27:38,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 10:27:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 10:27:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-10 10:27:39,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:39,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 457 transitions, 8995 flow. Second operand has 20 states, 20 states have (on average 13.4) internal successors, (268), 20 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:39,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:39,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:39,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:41,174 INFO L124 PetriNetUnfolderBase]: 3184/6412 cut-off events. [2024-11-10 10:27:41,175 INFO L125 PetriNetUnfolderBase]: For 74532/74665 co-relation queries the response was YES. [2024-11-10 10:27:41,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39939 conditions, 6412 events. 3184/6412 cut-off events. For 74532/74665 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 47859 event pairs, 163 based on Foata normal form. 62/6465 useless extension candidates. Maximal degree in co-relation 39852. Up to 1006 conditions per place. [2024-11-10 10:27:41,251 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 117 selfloop transitions, 430 changer transitions 3/559 dead transitions. [2024-11-10 10:27:41,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 559 transitions, 10863 flow [2024-11-10 10:27:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 10:27:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 10:27:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 469 transitions. [2024-11-10 10:27:41,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-11-10 10:27:41,252 INFO L175 Difference]: Start difference. First operand has 306 places, 457 transitions, 8995 flow. Second operand 28 states and 469 transitions. [2024-11-10 10:27:41,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 559 transitions, 10863 flow [2024-11-10 10:27:41,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 559 transitions, 10718 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-10 10:27:41,608 INFO L231 Difference]: Finished difference. Result has 333 places, 484 transitions, 10314 flow [2024-11-10 10:27:41,608 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8794, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=10314, PETRI_PLACES=333, PETRI_TRANSITIONS=484} [2024-11-10 10:27:41,608 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-11-10 10:27:41,608 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 484 transitions, 10314 flow [2024-11-10 10:27:41,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.4) internal successors, (268), 20 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:41,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:41,609 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:41,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 10:27:41,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-10 10:27:41,810 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:41,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash -510397923, now seen corresponding path program 2 times [2024-11-10 10:27:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:41,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174848322] [2024-11-10 10:27:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:41,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:42,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:42,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174848322] [2024-11-10 10:27:42,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174848322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:27:42,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177437402] [2024-11-10 10:27:42,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:27:42,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:42,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:42,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:27:42,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:27:42,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:27:42,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:27:42,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:27:42,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:42,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:27:42,507 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:27:42,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 48 [2024-11-10 10:27:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177437402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:27:42,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:27:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 17 [2024-11-10 10:27:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424216546] [2024-11-10 10:27:42,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:27:42,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 10:27:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 10:27:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:27:42,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:42,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 484 transitions, 10314 flow. Second operand has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:42,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:42,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:42,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:44,755 INFO L124 PetriNetUnfolderBase]: 4187/8434 cut-off events. [2024-11-10 10:27:44,755 INFO L125 PetriNetUnfolderBase]: For 107102/107264 co-relation queries the response was YES. [2024-11-10 10:27:44,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55006 conditions, 8434 events. 4187/8434 cut-off events. For 107102/107264 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 65765 event pairs, 651 based on Foata normal form. 41/8439 useless extension candidates. Maximal degree in co-relation 54916. Up to 1914 conditions per place. [2024-11-10 10:27:44,856 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 262 selfloop transitions, 402 changer transitions 5/678 dead transitions. [2024-11-10 10:27:44,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 678 transitions, 13918 flow [2024-11-10 10:27:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 10:27:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 10:27:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 454 transitions. [2024-11-10 10:27:44,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2024-11-10 10:27:44,858 INFO L175 Difference]: Start difference. First operand has 333 places, 484 transitions, 10314 flow. Second operand 24 states and 454 transitions. [2024-11-10 10:27:44,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 678 transitions, 13918 flow [2024-11-10 10:27:45,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 678 transitions, 12746 flow, removed 25 selfloop flow, removed 16 redundant places. [2024-11-10 10:27:45,541 INFO L231 Difference]: Finished difference. Result has 350 places, 574 transitions, 12422 flow [2024-11-10 10:27:45,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9313, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=12422, PETRI_PLACES=350, PETRI_TRANSITIONS=574} [2024-11-10 10:27:45,542 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-11-10 10:27:45,542 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 574 transitions, 12422 flow [2024-11-10 10:27:45,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:45,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:45,542 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:45,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 10:27:45,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:27:45,745 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:45,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash 678172949, now seen corresponding path program 3 times [2024-11-10 10:27:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:45,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756001085] [2024-11-10 10:27:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:46,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:46,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756001085] [2024-11-10 10:27:46,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756001085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:46,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:46,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:27:46,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810033550] [2024-11-10 10:27:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:46,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:27:46,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:27:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:27:46,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:46,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 574 transitions, 12422 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:46,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:46,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:46,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:48,334 INFO L124 PetriNetUnfolderBase]: 4166/8425 cut-off events. [2024-11-10 10:27:48,335 INFO L125 PetriNetUnfolderBase]: For 116446/116615 co-relation queries the response was YES. [2024-11-10 10:27:48,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55592 conditions, 8425 events. 4166/8425 cut-off events. For 116446/116615 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 65961 event pairs, 1280 based on Foata normal form. 44/8432 useless extension candidates. Maximal degree in co-relation 55493. Up to 4091 conditions per place. [2024-11-10 10:27:48,455 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 325 selfloop transitions, 268 changer transitions 1/603 dead transitions. [2024-11-10 10:27:48,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 603 transitions, 13550 flow [2024-11-10 10:27:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:27:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:27:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-11-10 10:27:48,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-10 10:27:48,457 INFO L175 Difference]: Start difference. First operand has 350 places, 574 transitions, 12422 flow. Second operand 12 states and 222 transitions. [2024-11-10 10:27:48,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 603 transitions, 13550 flow [2024-11-10 10:27:49,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 603 transitions, 13280 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-11-10 10:27:49,347 INFO L231 Difference]: Finished difference. Result has 350 places, 565 transitions, 12628 flow [2024-11-10 10:27:49,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11902, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12628, PETRI_PLACES=350, PETRI_TRANSITIONS=565} [2024-11-10 10:27:49,348 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-11-10 10:27:49,348 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 565 transitions, 12628 flow [2024-11-10 10:27:49,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:49,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:49,348 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:49,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-10 10:27:49,348 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:49,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1570047055, now seen corresponding path program 4 times [2024-11-10 10:27:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:49,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664196364] [2024-11-10 10:27:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664196364] [2024-11-10 10:27:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664196364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:27:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759787219] [2024-11-10 10:27:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:49,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:27:49,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:27:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:27:49,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:49,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 565 transitions, 12628 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:49,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:49,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:49,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:52,036 INFO L124 PetriNetUnfolderBase]: 4177/8460 cut-off events. [2024-11-10 10:27:52,037 INFO L125 PetriNetUnfolderBase]: For 129439/129604 co-relation queries the response was YES. [2024-11-10 10:27:52,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57155 conditions, 8460 events. 4177/8460 cut-off events. For 129439/129604 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 66378 event pairs, 1203 based on Foata normal form. 53/8472 useless extension candidates. Maximal degree in co-relation 57057. Up to 3463 conditions per place. [2024-11-10 10:27:52,150 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 373 selfloop transitions, 252 changer transitions 0/634 dead transitions. [2024-11-10 10:27:52,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 634 transitions, 14642 flow [2024-11-10 10:27:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:27:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:27:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-11-10 10:27:52,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5215311004784688 [2024-11-10 10:27:52,151 INFO L175 Difference]: Start difference. First operand has 350 places, 565 transitions, 12628 flow. Second operand 11 states and 218 transitions. [2024-11-10 10:27:52,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 634 transitions, 14642 flow [2024-11-10 10:27:52,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 634 transitions, 14207 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-10 10:27:52,919 INFO L231 Difference]: Finished difference. Result has 350 places, 566 transitions, 12766 flow [2024-11-10 10:27:52,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12151, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12766, PETRI_PLACES=350, PETRI_TRANSITIONS=566} [2024-11-10 10:27:52,920 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-11-10 10:27:52,920 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 566 transitions, 12766 flow [2024-11-10 10:27:52,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:52,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:52,921 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:52,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-10 10:27:52,921 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:52,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash -555340599, now seen corresponding path program 5 times [2024-11-10 10:27:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:52,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047201414] [2024-11-10 10:27:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:52,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:53,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:53,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047201414] [2024-11-10 10:27:53,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047201414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:53,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:53,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:27:53,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384831710] [2024-11-10 10:27:53,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:53,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:27:53,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:53,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:27:53,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:27:53,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:53,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 566 transitions, 12766 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:53,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:53,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:53,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:55,384 INFO L124 PetriNetUnfolderBase]: 4128/8386 cut-off events. [2024-11-10 10:27:55,385 INFO L125 PetriNetUnfolderBase]: For 131140/131299 co-relation queries the response was YES. [2024-11-10 10:27:55,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57000 conditions, 8386 events. 4128/8386 cut-off events. For 131140/131299 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 65768 event pairs, 1192 based on Foata normal form. 40/8386 useless extension candidates. Maximal degree in co-relation 56902. Up to 3875 conditions per place. [2024-11-10 10:27:55,491 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 347 selfloop transitions, 254 changer transitions 1/611 dead transitions. [2024-11-10 10:27:55,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 611 transitions, 14206 flow [2024-11-10 10:27:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:27:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:27:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-11-10 10:27:55,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5021929824561403 [2024-11-10 10:27:55,494 INFO L175 Difference]: Start difference. First operand has 350 places, 566 transitions, 12766 flow. Second operand 12 states and 229 transitions. [2024-11-10 10:27:55,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 611 transitions, 14206 flow [2024-11-10 10:27:56,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 611 transitions, 13722 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-11-10 10:27:56,491 INFO L231 Difference]: Finished difference. Result has 350 places, 562 transitions, 12998 flow [2024-11-10 10:27:56,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12177, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12998, PETRI_PLACES=350, PETRI_TRANSITIONS=562} [2024-11-10 10:27:56,493 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-11-10 10:27:56,493 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 562 transitions, 12998 flow [2024-11-10 10:27:56,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:56,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:56,493 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:56,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-10 10:27:56,494 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:27:56,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1667031249, now seen corresponding path program 6 times [2024-11-10 10:27:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:56,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815129875] [2024-11-10 10:27:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:56,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:27:57,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:57,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815129875] [2024-11-10 10:27:57,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815129875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:57,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:57,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:27:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618829002] [2024-11-10 10:27:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:57,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:27:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:27:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:27:57,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:27:57,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 562 transitions, 12998 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:27:57,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:57,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:27:57,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:58,982 INFO L124 PetriNetUnfolderBase]: 4064/8200 cut-off events. [2024-11-10 10:27:58,982 INFO L125 PetriNetUnfolderBase]: For 139568/139727 co-relation queries the response was YES. [2024-11-10 10:27:59,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57406 conditions, 8200 events. 4064/8200 cut-off events. For 139568/139727 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 63625 event pairs, 1697 based on Foata normal form. 12/8173 useless extension candidates. Maximal degree in co-relation 57310. Up to 5503 conditions per place. [2024-11-10 10:27:59,089 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 462 selfloop transitions, 107 changer transitions 3/581 dead transitions. [2024-11-10 10:27:59,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 581 transitions, 14135 flow [2024-11-10 10:27:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:27:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:27:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-11-10 10:27:59,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47129186602870815 [2024-11-10 10:27:59,090 INFO L175 Difference]: Start difference. First operand has 350 places, 562 transitions, 12998 flow. Second operand 11 states and 197 transitions. [2024-11-10 10:27:59,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 581 transitions, 14135 flow [2024-11-10 10:28:00,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 581 transitions, 13706 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-11-10 10:28:00,118 INFO L231 Difference]: Finished difference. Result has 346 places, 558 transitions, 12694 flow [2024-11-10 10:28:00,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12502, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12694, PETRI_PLACES=346, PETRI_TRANSITIONS=558} [2024-11-10 10:28:00,122 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2024-11-10 10:28:00,122 INFO L471 AbstractCegarLoop]: Abstraction has has 346 places, 558 transitions, 12694 flow [2024-11-10 10:28:00,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:00,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:00,122 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:00,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-10 10:28:00,123 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:00,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1942682949, now seen corresponding path program 7 times [2024-11-10 10:28:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100704880] [2024-11-10 10:28:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:00,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:00,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:00,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100704880] [2024-11-10 10:28:00,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100704880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:00,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:00,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:28:00,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348831311] [2024-11-10 10:28:00,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:00,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:28:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:28:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:28:00,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:28:00,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 558 transitions, 12694 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:00,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:00,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:28:00,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:03,040 INFO L124 PetriNetUnfolderBase]: 4009/8149 cut-off events. [2024-11-10 10:28:03,041 INFO L125 PetriNetUnfolderBase]: For 131203/131360 co-relation queries the response was YES. [2024-11-10 10:28:03,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55457 conditions, 8149 events. 4009/8149 cut-off events. For 131203/131360 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 63566 event pairs, 1115 based on Foata normal form. 40/8152 useless extension candidates. Maximal degree in co-relation 55363. Up to 3650 conditions per place. [2024-11-10 10:28:03,124 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 343 selfloop transitions, 255 changer transitions 1/608 dead transitions. [2024-11-10 10:28:03,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 608 transitions, 14195 flow [2024-11-10 10:28:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:28:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:28:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-11-10 10:28:03,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2024-11-10 10:28:03,125 INFO L175 Difference]: Start difference. First operand has 346 places, 558 transitions, 12694 flow. Second operand 12 states and 227 transitions. [2024-11-10 10:28:03,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 608 transitions, 14195 flow [2024-11-10 10:28:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 608 transitions, 14071 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:28:03,751 INFO L231 Difference]: Finished difference. Result has 349 places, 556 transitions, 13176 flow [2024-11-10 10:28:03,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12523, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13176, PETRI_PLACES=349, PETRI_TRANSITIONS=556} [2024-11-10 10:28:03,752 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 317 predicate places. [2024-11-10 10:28:03,753 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 556 transitions, 13176 flow [2024-11-10 10:28:03,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:03,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:03,753 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:03,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-10 10:28:03,753 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:03,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1521334647, now seen corresponding path program 8 times [2024-11-10 10:28:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:03,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619934980] [2024-11-10 10:28:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:03,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:04,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619934980] [2024-11-10 10:28:04,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619934980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:04,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:04,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:28:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523207817] [2024-11-10 10:28:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:04,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:28:04,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:04,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:28:04,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:28:04,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:28:04,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 556 transitions, 13176 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:04,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:04,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:28:04,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:06,551 INFO L124 PetriNetUnfolderBase]: 4001/8112 cut-off events. [2024-11-10 10:28:06,551 INFO L125 PetriNetUnfolderBase]: For 149695/149852 co-relation queries the response was YES. [2024-11-10 10:28:06,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57263 conditions, 8112 events. 4001/8112 cut-off events. For 149695/149852 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 63124 event pairs, 1623 based on Foata normal form. 12/8083 useless extension candidates. Maximal degree in co-relation 57168. Up to 5414 conditions per place. [2024-11-10 10:28:06,645 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 434 selfloop transitions, 139 changer transitions 3/585 dead transitions. [2024-11-10 10:28:06,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 585 transitions, 14356 flow [2024-11-10 10:28:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:28:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:28:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 227 transitions. [2024-11-10 10:28:06,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45951417004048584 [2024-11-10 10:28:06,646 INFO L175 Difference]: Start difference. First operand has 349 places, 556 transitions, 13176 flow. Second operand 13 states and 227 transitions. [2024-11-10 10:28:06,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 585 transitions, 14356 flow [2024-11-10 10:28:07,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 585 transitions, 14009 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-10 10:28:07,296 INFO L231 Difference]: Finished difference. Result has 351 places, 553 transitions, 13027 flow [2024-11-10 10:28:07,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12770, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13027, PETRI_PLACES=351, PETRI_TRANSITIONS=553} [2024-11-10 10:28:07,297 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 319 predicate places. [2024-11-10 10:28:07,297 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 553 transitions, 13027 flow [2024-11-10 10:28:07,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:07,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:07,297 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:07,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-10 10:28:07,297 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:07,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1379918875, now seen corresponding path program 9 times [2024-11-10 10:28:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:07,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175244730] [2024-11-10 10:28:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:07,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:07,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175244730] [2024-11-10 10:28:07,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175244730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:07,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:07,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:28:07,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095871122] [2024-11-10 10:28:07,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:07,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:28:07,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:07,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:28:07,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:28:07,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:28:07,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 553 transitions, 13027 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:07,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:07,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:28:07,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:09,915 INFO L124 PetriNetUnfolderBase]: 3935/7949 cut-off events. [2024-11-10 10:28:09,915 INFO L125 PetriNetUnfolderBase]: For 144593/144750 co-relation queries the response was YES. [2024-11-10 10:28:09,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56192 conditions, 7949 events. 3935/7949 cut-off events. For 144593/144750 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 61424 event pairs, 1565 based on Foata normal form. 12/7920 useless extension candidates. Maximal degree in co-relation 56098. Up to 5278 conditions per place. [2024-11-10 10:28:10,038 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 430 selfloop transitions, 136 changer transitions 7/582 dead transitions. [2024-11-10 10:28:10,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 582 transitions, 14204 flow [2024-11-10 10:28:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:28:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:28:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 235 transitions. [2024-11-10 10:28:10,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4417293233082707 [2024-11-10 10:28:10,040 INFO L175 Difference]: Start difference. First operand has 351 places, 553 transitions, 13027 flow. Second operand 14 states and 235 transitions. [2024-11-10 10:28:10,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 582 transitions, 14204 flow [2024-11-10 10:28:10,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 582 transitions, 13870 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-11-10 10:28:10,925 INFO L231 Difference]: Finished difference. Result has 347 places, 549 transitions, 12877 flow [2024-11-10 10:28:10,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12637, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12877, PETRI_PLACES=347, PETRI_TRANSITIONS=549} [2024-11-10 10:28:10,926 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 315 predicate places. [2024-11-10 10:28:10,926 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 549 transitions, 12877 flow [2024-11-10 10:28:10,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:10,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:10,927 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:10,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-10 10:28:10,927 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:10,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash -951120128, now seen corresponding path program 1 times [2024-11-10 10:28:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:10,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676178473] [2024-11-10 10:28:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:10,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:11,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:11,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676178473] [2024-11-10 10:28:11,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676178473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:11,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916552849] [2024-11-10 10:28:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:11,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:11,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:11,312 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:28:11,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:28:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:11,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 10:28:11,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:28:11,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:28:11,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-10 10:28:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:11,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:28:11,762 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-10 10:28:11,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 113 treesize of output 97 [2024-11-10 10:28:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:11,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916552849] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:11,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:28:11,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-11-10 10:28:11,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560880046] [2024-11-10 10:28:11,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:11,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:28:11,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:28:11,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:28:11,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:28:11,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 549 transitions, 12877 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:11,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:11,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:28:11,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:14,020 INFO L124 PetriNetUnfolderBase]: 4272/8753 cut-off events. [2024-11-10 10:28:14,020 INFO L125 PetriNetUnfolderBase]: For 146930/147088 co-relation queries the response was YES. [2024-11-10 10:28:14,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59282 conditions, 8753 events. 4272/8753 cut-off events. For 146930/147088 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 69683 event pairs, 778 based on Foata normal form. 36/8754 useless extension candidates. Maximal degree in co-relation 59188. Up to 2675 conditions per place. [2024-11-10 10:28:14,140 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 358 selfloop transitions, 250 changer transitions 0/617 dead transitions. [2024-11-10 10:28:14,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 617 transitions, 14796 flow [2024-11-10 10:28:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:28:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:28:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-11-10 10:28:14,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5215311004784688 [2024-11-10 10:28:14,141 INFO L175 Difference]: Start difference. First operand has 347 places, 549 transitions, 12877 flow. Second operand 11 states and 218 transitions. [2024-11-10 10:28:14,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 617 transitions, 14796 flow [2024-11-10 10:28:14,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 617 transitions, 14484 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-10 10:28:14,966 INFO L231 Difference]: Finished difference. Result has 343 places, 562 transitions, 13442 flow [2024-11-10 10:28:14,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12569, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13442, PETRI_PLACES=343, PETRI_TRANSITIONS=562} [2024-11-10 10:28:14,967 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 311 predicate places. [2024-11-10 10:28:14,967 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 562 transitions, 13442 flow [2024-11-10 10:28:14,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:14,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:14,968 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:14,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 10:28:15,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-10 10:28:15,172 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:15,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2001579542, now seen corresponding path program 2 times [2024-11-10 10:28:15,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:15,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343672361] [2024-11-10 10:28:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:15,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:15,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343672361] [2024-11-10 10:28:15,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343672361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:15,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:15,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:28:15,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074688799] [2024-11-10 10:28:15,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:15,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:28:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:28:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:28:15,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:28:15,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 562 transitions, 13442 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:15,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:15,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:28:15,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:17,785 INFO L124 PetriNetUnfolderBase]: 4197/8598 cut-off events. [2024-11-10 10:28:17,785 INFO L125 PetriNetUnfolderBase]: For 152218/152372 co-relation queries the response was YES. [2024-11-10 10:28:17,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59684 conditions, 8598 events. 4197/8598 cut-off events. For 152218/152372 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 68097 event pairs, 1204 based on Foata normal form. 13/8578 useless extension candidates. Maximal degree in co-relation 59589. Up to 3356 conditions per place. [2024-11-10 10:28:17,878 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 329 selfloop transitions, 247 changer transitions 4/589 dead transitions. [2024-11-10 10:28:17,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 589 transitions, 14627 flow [2024-11-10 10:28:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:28:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:28:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-11-10 10:28:17,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2024-11-10 10:28:17,879 INFO L175 Difference]: Start difference. First operand has 343 places, 562 transitions, 13442 flow. Second operand 12 states and 211 transitions. [2024-11-10 10:28:17,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 589 transitions, 14627 flow [2024-11-10 10:28:18,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 589 transitions, 14408 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-10 10:28:18,605 INFO L231 Difference]: Finished difference. Result has 351 places, 558 transitions, 13627 flow [2024-11-10 10:28:18,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13155, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13627, PETRI_PLACES=351, PETRI_TRANSITIONS=558} [2024-11-10 10:28:18,611 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 319 predicate places. [2024-11-10 10:28:18,611 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 558 transitions, 13627 flow [2024-11-10 10:28:18,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:18,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:18,611 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:18,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-10 10:28:18,611 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:18,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1564654298, now seen corresponding path program 3 times [2024-11-10 10:28:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659623503] [2024-11-10 10:28:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:18,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659623503] [2024-11-10 10:28:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659623503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862608139] [2024-11-10 10:28:19,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:28:19,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:19,062 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:28:19,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:28:19,184 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:28:19,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:28:19,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:28:19,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:28:19,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:28:19,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 70 [2024-11-10 10:28:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:19,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:28:19,563 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:28:19,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 111 treesize of output 95 [2024-11-10 10:28:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:19,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862608139] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:19,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:28:19,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 9] total 17 [2024-11-10 10:28:19,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869207229] [2024-11-10 10:28:19,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:19,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:28:19,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:19,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:28:19,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:28:19,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:28:19,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 558 transitions, 13627 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:19,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:19,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:28:19,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:21,810 INFO L124 PetriNetUnfolderBase]: 4292/8792 cut-off events. [2024-11-10 10:28:21,810 INFO L125 PetriNetUnfolderBase]: For 158915/159073 co-relation queries the response was YES. [2024-11-10 10:28:21,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61816 conditions, 8792 events. 4292/8792 cut-off events. For 158915/159073 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 70123 event pairs, 790 based on Foata normal form. 36/8789 useless extension candidates. Maximal degree in co-relation 61720. Up to 2675 conditions per place. [2024-11-10 10:28:21,916 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 358 selfloop transitions, 246 changer transitions 0/613 dead transitions. [2024-11-10 10:28:21,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 613 transitions, 15309 flow [2024-11-10 10:28:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:28:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:28:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-11-10 10:28:21,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5421052631578948 [2024-11-10 10:28:21,920 INFO L175 Difference]: Start difference. First operand has 351 places, 558 transitions, 13627 flow. Second operand 10 states and 206 transitions. [2024-11-10 10:28:21,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 613 transitions, 15309 flow [2024-11-10 10:28:22,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 613 transitions, 14980 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-10 10:28:22,734 INFO L231 Difference]: Finished difference. Result has 352 places, 561 transitions, 13946 flow [2024-11-10 10:28:22,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13250, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13946, PETRI_PLACES=352, PETRI_TRANSITIONS=561} [2024-11-10 10:28:22,735 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 320 predicate places. [2024-11-10 10:28:22,735 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 561 transitions, 13946 flow [2024-11-10 10:28:22,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:22,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:22,735 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:22,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 10:28:22,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-10 10:28:22,940 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:22,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash 396932992, now seen corresponding path program 4 times [2024-11-10 10:28:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:22,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333152547] [2024-11-10 10:28:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:22,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:23,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:23,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333152547] [2024-11-10 10:28:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333152547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:28:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52656944] [2024-11-10 10:28:23,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:28:23,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:28:23,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:23,476 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:28:23,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 10:28:23,595 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:28:23,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:28:23,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 10:28:23,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:28:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:23,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:28:23,745 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-10 10:28:23,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 56 [2024-11-10 10:28:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 10:28:23,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52656944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:28:23,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:28:23,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 18 [2024-11-10 10:28:23,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45693580] [2024-11-10 10:28:23,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:28:23,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:28:23,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:28:23,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:28:23,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:28:23,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 561 transitions, 13946 flow. Second operand has 18 states, 18 states have (on average 13.277777777777779) internal successors, (239), 18 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:23,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:23,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:28:23,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:26,276 INFO L124 PetriNetUnfolderBase]: 4464/9181 cut-off events. [2024-11-10 10:28:26,276 INFO L125 PetriNetUnfolderBase]: For 174054/174207 co-relation queries the response was YES. [2024-11-10 10:28:26,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64696 conditions, 9181 events. 4464/9181 cut-off events. For 174054/174207 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 74085 event pairs, 781 based on Foata normal form. 56/9213 useless extension candidates. Maximal degree in co-relation 64598. Up to 2452 conditions per place. [2024-11-10 10:28:26,382 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 348 selfloop transitions, 307 changer transitions 0/664 dead transitions. [2024-11-10 10:28:26,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 664 transitions, 16582 flow [2024-11-10 10:28:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 10:28:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 10:28:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 297 transitions. [2024-11-10 10:28:26,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48848684210526316 [2024-11-10 10:28:26,383 INFO L175 Difference]: Start difference. First operand has 352 places, 561 transitions, 13946 flow. Second operand 16 states and 297 transitions. [2024-11-10 10:28:26,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 664 transitions, 16582 flow [2024-11-10 10:28:27,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 664 transitions, 16127 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-10 10:28:27,220 INFO L231 Difference]: Finished difference. Result has 366 places, 603 transitions, 15335 flow [2024-11-10 10:28:27,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13464, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=15335, PETRI_PLACES=366, PETRI_TRANSITIONS=603} [2024-11-10 10:28:27,221 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 334 predicate places. [2024-11-10 10:28:27,221 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 603 transitions, 15335 flow [2024-11-10 10:28:27,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.277777777777779) internal successors, (239), 18 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:27,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:27,221 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:27,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 10:28:27,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-10 10:28:27,422 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:27,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:27,423 INFO L85 PathProgramCache]: Analyzing trace with hash 514194884, now seen corresponding path program 5 times [2024-11-10 10:28:27,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:27,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904123414] [2024-11-10 10:28:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:27,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat