./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-subst.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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:45:50,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:45:50,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:45:50,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:45:50,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:45:50,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:45:50,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:45:50,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:45:50,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:45:50,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:45:50,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:45:50,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:45:50,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:45:50,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:45:50,687 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:45:50,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:45:50,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:45:50,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:45:50,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:45:50,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:45:50,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:45:50,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:45:50,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:45:50,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:45:50,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:45:50,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:45:50,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:45:50,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:45:50,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:45:50,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:45:50,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:45:50,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:45:50,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:45:50,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:45:50,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:45:50,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:45:50,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:45:50,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:45:50,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:45:50,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:45:50,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:45:50,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:45:50,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-11-22 13:45:50,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:45:50,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:45:50,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:45:50,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:45:50,986 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:45:50,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-22 13:45:52,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:45:52,417 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:45:52,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-22 13:45:52,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54be259a3/89378a16a4a246919dd5372177ef518d/FLAG4e46f9336 [2024-11-22 13:45:52,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54be259a3/89378a16a4a246919dd5372177ef518d [2024-11-22 13:45:52,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:45:52,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:45:52,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:45:52,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:45:52,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:45:52,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50887ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52, skipping insertion in model container [2024-11-22 13:45:52,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:45:52,692 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-word-subst.wvr.c[3384,3397] [2024-11-22 13:45:52,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:45:52,718 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:45:52,747 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-word-subst.wvr.c[3384,3397] [2024-11-22 13:45:52,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:45:52,769 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:45:52,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52 WrapperNode [2024-11-22 13:45:52,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:45:52,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:45:52,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:45:52,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:45:52,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,808 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 169 [2024-11-22 13:45:52,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:45:52,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:45:52,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:45:52,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:45:52,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,823 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,836 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-22 13:45:52,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:45:52,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:45:52,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:45:52,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:45:52,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (1/1) ... [2024-11-22 13:45:52,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:45:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:52,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:45:52,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:45:52,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:45:52,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:45:52,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:45:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:45:52,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:45:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:45:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:45:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:45:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:45:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:45:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:45:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:45:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:45:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:45:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:45:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:45:52,974 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:45:53,102 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:45:53,104 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:45:53,440 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:45:53,440 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:45:53,721 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:45:53,722 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 13:45:53,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:45:53 BoogieIcfgContainer [2024-11-22 13:45:53,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:45:53,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:45:53,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:45:53,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:45:53,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:45:52" (1/3) ... [2024-11-22 13:45:53,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c08bbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:45:53, skipping insertion in model container [2024-11-22 13:45:53,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:52" (2/3) ... [2024-11-22 13:45:53,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c08bbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:45:53, skipping insertion in model container [2024-11-22 13:45:53,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:45:53" (3/3) ... [2024-11-22 13:45:53,730 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-11-22 13:45:53,746 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:45:53,746 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:45:53,746 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:45:53,797 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:45:53,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-22 13:45:53,887 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-22 13:45:53,888 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:45:53,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-22 13:45:53,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-22 13:45:53,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-22 13:45:53,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:45:53,908 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;@60cc91fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:45:53,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:45:53,920 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:45:53,921 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-22 13:45:53,921 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:45:53,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:53,922 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:53,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:45:53,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash -220026163, now seen corresponding path program 1 times [2024-11-22 13:45:53,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118936324] [2024-11-22 13:45:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:53,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118936324] [2024-11-22 13:45:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118936324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:54,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:45:54,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312446743] [2024-11-22 13:45:54,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:54,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:45:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:54,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:45:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:45:54,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:54,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:54,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:54,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:54,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:54,899 INFO L124 PetriNetUnfolderBase]: 3738/4998 cut-off events. [2024-11-22 13:45:54,900 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-11-22 13:45:54,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10276 conditions, 4998 events. 3738/4998 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20524 event pairs, 1692 based on Foata normal form. 1/3664 useless extension candidates. Maximal degree in co-relation 9368. Up to 3459 conditions per place. [2024-11-22 13:45:54,925 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 65 selfloop transitions, 2 changer transitions 5/73 dead transitions. [2024-11-22 13:45:54,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 323 flow [2024-11-22 13:45:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:45:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:45:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-22 13:45:54,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-11-22 13:45:54,938 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-11-22 13:45:54,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 323 flow [2024-11-22 13:45:54,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 301 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:45:54,949 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 106 flow [2024-11-22 13:45:54,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-11-22 13:45:54,954 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-22 13:45:54,955 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 106 flow [2024-11-22 13:45:54,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:54,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:54,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:54,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:45:54,957 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:45:54,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1290270659, now seen corresponding path program 1 times [2024-11-22 13:45:54,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:54,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466122853] [2024-11-22 13:45:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:55,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466122853] [2024-11-22 13:45:55,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466122853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:55,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:55,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:45:55,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47772730] [2024-11-22 13:45:55,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:55,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:45:55,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:45:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:45:55,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:55,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:55,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:55,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:55,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:56,247 INFO L124 PetriNetUnfolderBase]: 3507/4756 cut-off events. [2024-11-22 13:45:56,247 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-11-22 13:45:56,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 4756 events. 3507/4756 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20957 event pairs, 377 based on Foata normal form. 1/3751 useless extension candidates. Maximal degree in co-relation 8283. Up to 3012 conditions per place. [2024-11-22 13:45:56,267 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 87 selfloop transitions, 9 changer transitions 14/111 dead transitions. [2024-11-22 13:45:56,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 111 transitions, 485 flow [2024-11-22 13:45:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:45:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:45:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-22 13:45:56,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-11-22 13:45:56,272 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 106 flow. Second operand 6 states and 132 transitions. [2024-11-22 13:45:56,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 111 transitions, 485 flow [2024-11-22 13:45:56,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:56,290 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 170 flow [2024-11-22 13:45:56,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2024-11-22 13:45:56,291 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-11-22 13:45:56,291 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 170 flow [2024-11-22 13:45:56,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:56,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:56,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:56,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:45:56,292 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:45:56,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash 510529653, now seen corresponding path program 2 times [2024-11-22 13:45:56,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:56,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737246896] [2024-11-22 13:45:56,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:56,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:56,325 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:45:56,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:56,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:56,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737246896] [2024-11-22 13:45:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737246896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:56,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:56,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042150463] [2024-11-22 13:45:56,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:56,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:56,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:56,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:56,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:56,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:56,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:56,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:57,094 INFO L124 PetriNetUnfolderBase]: 4215/5817 cut-off events. [2024-11-22 13:45:57,095 INFO L125 PetriNetUnfolderBase]: For 1352/1352 co-relation queries the response was YES. [2024-11-22 13:45:57,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13038 conditions, 5817 events. 4215/5817 cut-off events. For 1352/1352 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 25580 event pairs, 2040 based on Foata normal form. 1/4988 useless extension candidates. Maximal degree in co-relation 13014. Up to 3779 conditions per place. [2024-11-22 13:45:57,120 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 88 selfloop transitions, 3 changer transitions 15/107 dead transitions. [2024-11-22 13:45:57,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 107 transitions, 534 flow [2024-11-22 13:45:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-22 13:45:57,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-11-22 13:45:57,122 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 170 flow. Second operand 5 states and 116 transitions. [2024-11-22 13:45:57,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 107 transitions, 534 flow [2024-11-22 13:45:57,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 107 transitions, 528 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:57,129 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 188 flow [2024-11-22 13:45:57,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-11-22 13:45:57,129 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-22 13:45:57,129 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 188 flow [2024-11-22 13:45:57,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:57,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:57,130 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:57,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:45:57,130 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:45:57,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash -574546763, now seen corresponding path program 3 times [2024-11-22 13:45:57,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:57,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145921465] [2024-11-22 13:45:57,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:45:57,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:57,148 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:45:57,149 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:57,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145921465] [2024-11-22 13:45:57,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145921465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:57,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:57,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49325085] [2024-11-22 13:45:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:57,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:57,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:57,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:57,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:57,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:57,954 INFO L124 PetriNetUnfolderBase]: 4645/6434 cut-off events. [2024-11-22 13:45:57,955 INFO L125 PetriNetUnfolderBase]: For 2951/2951 co-relation queries the response was YES. [2024-11-22 13:45:57,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14892 conditions, 6434 events. 4645/6434 cut-off events. For 2951/2951 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30979 event pairs, 683 based on Foata normal form. 1/5525 useless extension candidates. Maximal degree in co-relation 14861. Up to 4403 conditions per place. [2024-11-22 13:45:57,988 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 92 selfloop transitions, 3 changer transitions 15/111 dead transitions. [2024-11-22 13:45:57,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 111 transitions, 563 flow [2024-11-22 13:45:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-22 13:45:57,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-22 13:45:57,990 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 188 flow. Second operand 5 states and 120 transitions. [2024-11-22 13:45:57,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 111 transitions, 563 flow [2024-11-22 13:45:58,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 111 transitions, 552 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 13:45:58,010 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 203 flow [2024-11-22 13:45:58,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-11-22 13:45:58,011 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-11-22 13:45:58,012 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 203 flow [2024-11-22 13:45:58,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:58,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:58,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:58,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:45:58,013 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:45:58,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash -330068201, now seen corresponding path program 4 times [2024-11-22 13:45:58,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:58,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658483535] [2024-11-22 13:45:58,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:45:58,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:58,025 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:45:58,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:58,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:58,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658483535] [2024-11-22 13:45:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658483535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:58,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153362056] [2024-11-22 13:45:58,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:58,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:58,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:58,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:58,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:58,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:58,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:58,883 INFO L124 PetriNetUnfolderBase]: 5802/8060 cut-off events. [2024-11-22 13:45:58,883 INFO L125 PetriNetUnfolderBase]: For 6101/6101 co-relation queries the response was YES. [2024-11-22 13:45:58,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19066 conditions, 8060 events. 5802/8060 cut-off events. For 6101/6101 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 38010 event pairs, 1330 based on Foata normal form. 1/6959 useless extension candidates. Maximal degree in co-relation 19025. Up to 4199 conditions per place. [2024-11-22 13:45:58,915 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 109 selfloop transitions, 13 changer transitions 16/139 dead transitions. [2024-11-22 13:45:58,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 139 transitions, 749 flow [2024-11-22 13:45:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:45:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:45:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-22 13:45:58,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-11-22 13:45:58,917 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 203 flow. Second operand 6 states and 146 transitions. [2024-11-22 13:45:58,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 139 transitions, 749 flow [2024-11-22 13:45:58,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 139 transitions, 730 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-22 13:45:58,937 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 305 flow [2024-11-22 13:45:58,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-11-22 13:45:58,938 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-11-22 13:45:58,938 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 305 flow [2024-11-22 13:45:58,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:58,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:58,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:58,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:45:58,939 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:45:58,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2123824463, now seen corresponding path program 5 times [2024-11-22 13:45:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:58,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63238293] [2024-11-22 13:45:58,943 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:45:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:58,969 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:45:58,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:59,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:59,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63238293] [2024-11-22 13:45:59,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63238293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:59,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:59,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:45:59,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825243770] [2024-11-22 13:45:59,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:59,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:45:59,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:45:59,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:45:59,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:59,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:59,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:59,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:59,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:59,966 INFO L124 PetriNetUnfolderBase]: 5685/7870 cut-off events. [2024-11-22 13:45:59,966 INFO L125 PetriNetUnfolderBase]: For 7430/7430 co-relation queries the response was YES. [2024-11-22 13:45:59,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20529 conditions, 7870 events. 5685/7870 cut-off events. For 7430/7430 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 36634 event pairs, 3093 based on Foata normal form. 1/7188 useless extension candidates. Maximal degree in co-relation 20490. Up to 5835 conditions per place. [2024-11-22 13:46:00,003 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 103 selfloop transitions, 6 changer transitions 14/124 dead transitions. [2024-11-22 13:46:00,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 124 transitions, 722 flow [2024-11-22 13:46:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-22 13:46:00,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-11-22 13:46:00,005 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 305 flow. Second operand 5 states and 123 transitions. [2024-11-22 13:46:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 124 transitions, 722 flow [2024-11-22 13:46:00,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 124 transitions, 703 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:00,038 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 308 flow [2024-11-22 13:46:00,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-11-22 13:46:00,038 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-11-22 13:46:00,039 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 308 flow [2024-11-22 13:46:00,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:00,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:00,039 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:00,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:46:00,040 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:00,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash 871185299, now seen corresponding path program 6 times [2024-11-22 13:46:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17241022] [2024-11-22 13:46:00,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:00,068 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:00,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:00,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:00,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17241022] [2024-11-22 13:46:00,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17241022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:00,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:00,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:00,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817101174] [2024-11-22 13:46:00,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:00,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:00,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:00,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:00,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:00,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:00,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:00,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:00,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:00,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:00,971 INFO L124 PetriNetUnfolderBase]: 5573/7701 cut-off events. [2024-11-22 13:46:00,971 INFO L125 PetriNetUnfolderBase]: For 7554/7554 co-relation queries the response was YES. [2024-11-22 13:46:00,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20015 conditions, 7701 events. 5573/7701 cut-off events. For 7554/7554 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35097 event pairs, 3162 based on Foata normal form. 1/7027 useless extension candidates. Maximal degree in co-relation 19979. Up to 6022 conditions per place. [2024-11-22 13:46:00,998 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 100 selfloop transitions, 5 changer transitions 14/120 dead transitions. [2024-11-22 13:46:00,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 707 flow [2024-11-22 13:46:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-22 13:46:01,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-22 13:46:01,000 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 308 flow. Second operand 5 states and 119 transitions. [2024-11-22 13:46:01,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 707 flow [2024-11-22 13:46:01,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 120 transitions, 693 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:01,014 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 313 flow [2024-11-22 13:46:01,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-11-22 13:46:01,015 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-11-22 13:46:01,015 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 313 flow [2024-11-22 13:46:01,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:01,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:01,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:01,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:46:01,016 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:01,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2016084104, now seen corresponding path program 1 times [2024-11-22 13:46:01,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:01,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464285145] [2024-11-22 13:46:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:01,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:01,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464285145] [2024-11-22 13:46:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464285145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835376897] [2024-11-22 13:46:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:01,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:01,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:01,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:01,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:01,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:01,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:01,829 INFO L124 PetriNetUnfolderBase]: 6670/9243 cut-off events. [2024-11-22 13:46:01,829 INFO L125 PetriNetUnfolderBase]: For 9748/9748 co-relation queries the response was YES. [2024-11-22 13:46:01,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23778 conditions, 9243 events. 6670/9243 cut-off events. For 9748/9748 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 45190 event pairs, 487 based on Foata normal form. 79/8489 useless extension candidates. Maximal degree in co-relation 23734. Up to 5960 conditions per place. [2024-11-22 13:46:01,860 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 106 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2024-11-22 13:46:01,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 709 flow [2024-11-22 13:46:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:46:01,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:46:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-22 13:46:01,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-22 13:46:01,862 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 313 flow. Second operand 4 states and 105 transitions. [2024-11-22 13:46:01,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 709 flow [2024-11-22 13:46:01,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 113 transitions, 697 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:01,883 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 368 flow [2024-11-22 13:46:01,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-11-22 13:46:01,884 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-11-22 13:46:01,885 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 368 flow [2024-11-22 13:46:01,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:01,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:01,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:01,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:46:01,887 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:01,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash -546786626, now seen corresponding path program 2 times [2024-11-22 13:46:01,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:01,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684165372] [2024-11-22 13:46:01,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:01,907 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:01,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:01,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684165372] [2024-11-22 13:46:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684165372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:01,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:01,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:01,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604134151] [2024-11-22 13:46:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:01,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:01,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:01,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:01,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:01,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:01,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:01,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:01,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:02,551 INFO L124 PetriNetUnfolderBase]: 6289/8727 cut-off events. [2024-11-22 13:46:02,551 INFO L125 PetriNetUnfolderBase]: For 9371/9371 co-relation queries the response was YES. [2024-11-22 13:46:02,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23294 conditions, 8727 events. 6289/8727 cut-off events. For 9371/9371 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 41785 event pairs, 637 based on Foata normal form. 79/8019 useless extension candidates. Maximal degree in co-relation 23231. Up to 5490 conditions per place. [2024-11-22 13:46:02,580 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 108 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2024-11-22 13:46:02,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 779 flow [2024-11-22 13:46:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:46:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:46:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-22 13:46:02,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-22 13:46:02,582 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 368 flow. Second operand 4 states and 105 transitions. [2024-11-22 13:46:02,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 779 flow [2024-11-22 13:46:02,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 117 transitions, 779 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:46:02,600 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 443 flow [2024-11-22 13:46:02,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2024-11-22 13:46:02,600 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-11-22 13:46:02,601 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 443 flow [2024-11-22 13:46:02,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:02,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:02,601 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:02,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:46:02,601 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:02,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:02,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1223396110, now seen corresponding path program 3 times [2024-11-22 13:46:02,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:02,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329242191] [2024-11-22 13:46:02,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:02,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:02,621 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:02,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:02,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:02,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329242191] [2024-11-22 13:46:02,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329242191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:02,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:02,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:02,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743456578] [2024-11-22 13:46:02,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:02,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:02,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:02,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:02,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:02,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:02,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:03,193 INFO L124 PetriNetUnfolderBase]: 5961/8264 cut-off events. [2024-11-22 13:46:03,193 INFO L125 PetriNetUnfolderBase]: For 11425/11425 co-relation queries the response was YES. [2024-11-22 13:46:03,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23115 conditions, 8264 events. 5961/8264 cut-off events. For 11425/11425 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 39541 event pairs, 1429 based on Foata normal form. 26/7549 useless extension candidates. Maximal degree in co-relation 23049. Up to 5949 conditions per place. [2024-11-22 13:46:03,238 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 106 selfloop transitions, 13 changer transitions 2/122 dead transitions. [2024-11-22 13:46:03,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 837 flow [2024-11-22 13:46:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-22 13:46:03,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-11-22 13:46:03,239 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 443 flow. Second operand 5 states and 117 transitions. [2024-11-22 13:46:03,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 837 flow [2024-11-22 13:46:03,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 122 transitions, 835 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-22 13:46:03,269 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 481 flow [2024-11-22 13:46:03,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=481, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-22 13:46:03,270 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-11-22 13:46:03,270 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 481 flow [2024-11-22 13:46:03,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:03,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:03,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:03,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:46:03,270 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:03,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash 848602484, now seen corresponding path program 1 times [2024-11-22 13:46:03,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:03,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025732841] [2024-11-22 13:46:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:03,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:03,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025732841] [2024-11-22 13:46:03,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025732841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:03,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:03,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812445695] [2024-11-22 13:46:03,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:03,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:03,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:03,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:03,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:03,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:03,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:03,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:03,832 INFO L124 PetriNetUnfolderBase]: 6899/9582 cut-off events. [2024-11-22 13:46:03,832 INFO L125 PetriNetUnfolderBase]: For 15130/15130 co-relation queries the response was YES. [2024-11-22 13:46:03,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26441 conditions, 9582 events. 6899/9582 cut-off events. For 15130/15130 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 47312 event pairs, 1094 based on Foata normal form. 78/8783 useless extension candidates. Maximal degree in co-relation 26373. Up to 6769 conditions per place. [2024-11-22 13:46:03,880 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 108 selfloop transitions, 10 changer transitions 0/119 dead transitions. [2024-11-22 13:46:03,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 869 flow [2024-11-22 13:46:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:46:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:46:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-22 13:46:03,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-22 13:46:03,882 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 481 flow. Second operand 4 states and 104 transitions. [2024-11-22 13:46:03,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 869 flow [2024-11-22 13:46:03,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 832 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:03,923 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 510 flow [2024-11-22 13:46:03,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=510, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2024-11-22 13:46:03,924 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-11-22 13:46:03,924 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 510 flow [2024-11-22 13:46:03,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:03,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:03,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:03,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:46:03,924 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:03,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1076861620, now seen corresponding path program 2 times [2024-11-22 13:46:03,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:03,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654364127] [2024-11-22 13:46:03,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:03,935 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:03,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:03,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:03,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654364127] [2024-11-22 13:46:03,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654364127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:03,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:03,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:03,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303232061] [2024-11-22 13:46:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:03,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:03,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:03,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:03,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:03,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:03,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:03,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:04,665 INFO L124 PetriNetUnfolderBase]: 6565/9110 cut-off events. [2024-11-22 13:46:04,666 INFO L125 PetriNetUnfolderBase]: For 12419/12419 co-relation queries the response was YES. [2024-11-22 13:46:04,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25793 conditions, 9110 events. 6565/9110 cut-off events. For 12419/12419 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 44405 event pairs, 1767 based on Foata normal form. 27/8307 useless extension candidates. Maximal degree in co-relation 25727. Up to 6695 conditions per place. [2024-11-22 13:46:04,710 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 112 selfloop transitions, 13 changer transitions 3/129 dead transitions. [2024-11-22 13:46:04,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 129 transitions, 930 flow [2024-11-22 13:46:04,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-22 13:46:04,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-22 13:46:04,712 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 510 flow. Second operand 5 states and 120 transitions. [2024-11-22 13:46:04,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 129 transitions, 930 flow [2024-11-22 13:46:04,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 129 transitions, 912 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:04,741 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 549 flow [2024-11-22 13:46:04,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-11-22 13:46:04,742 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-22 13:46:04,742 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 549 flow [2024-11-22 13:46:04,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:04,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:04,742 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:04,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:46:04,742 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:04,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:04,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2035178478, now seen corresponding path program 3 times [2024-11-22 13:46:04,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:04,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931827612] [2024-11-22 13:46:04,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:04,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:04,754 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:04,754 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:04,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:04,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931827612] [2024-11-22 13:46:04,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931827612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:04,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:04,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:04,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629649941] [2024-11-22 13:46:04,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:04,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:04,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:04,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:04,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:04,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:04,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 549 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:04,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:04,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:04,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:05,501 INFO L124 PetriNetUnfolderBase]: 5903/8175 cut-off events. [2024-11-22 13:46:05,501 INFO L125 PetriNetUnfolderBase]: For 14242/14242 co-relation queries the response was YES. [2024-11-22 13:46:05,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23506 conditions, 8175 events. 5903/8175 cut-off events. For 14242/14242 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 38475 event pairs, 2823 based on Foata normal form. 53/7491 useless extension candidates. Maximal degree in co-relation 23439. Up to 5750 conditions per place. [2024-11-22 13:46:05,546 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 122 selfloop transitions, 10 changer transitions 6/139 dead transitions. [2024-11-22 13:46:05,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 139 transitions, 983 flow [2024-11-22 13:46:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-22 13:46:05,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-22 13:46:05,548 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 549 flow. Second operand 5 states and 128 transitions. [2024-11-22 13:46:05,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 139 transitions, 983 flow [2024-11-22 13:46:05,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 139 transitions, 971 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:05,579 INFO L231 Difference]: Finished difference. Result has 87 places, 76 transitions, 522 flow [2024-11-22 13:46:05,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=87, PETRI_TRANSITIONS=76} [2024-11-22 13:46:05,580 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-11-22 13:46:05,581 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 522 flow [2024-11-22 13:46:05,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:05,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:05,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:05,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:46:05,581 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:05,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash 451618676, now seen corresponding path program 4 times [2024-11-22 13:46:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:05,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896955631] [2024-11-22 13:46:05,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:05,595 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:05,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:05,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:05,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896955631] [2024-11-22 13:46:05,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896955631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:05,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:05,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:05,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818351744] [2024-11-22 13:46:05,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:05,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:05,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:05,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:05,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:05,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:05,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:05,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:06,276 INFO L124 PetriNetUnfolderBase]: 5289/7293 cut-off events. [2024-11-22 13:46:06,276 INFO L125 PetriNetUnfolderBase]: For 14375/14375 co-relation queries the response was YES. [2024-11-22 13:46:06,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20863 conditions, 7293 events. 5289/7293 cut-off events. For 14375/14375 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 33214 event pairs, 374 based on Foata normal form. 78/6701 useless extension candidates. Maximal degree in co-relation 20795. Up to 4690 conditions per place. [2024-11-22 13:46:06,313 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 118 selfloop transitions, 14 changer transitions 2/135 dead transitions. [2024-11-22 13:46:06,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 935 flow [2024-11-22 13:46:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-22 13:46:06,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-22 13:46:06,314 INFO L175 Difference]: Start difference. First operand has 87 places, 76 transitions, 522 flow. Second operand 5 states and 126 transitions. [2024-11-22 13:46:06,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 935 flow [2024-11-22 13:46:06,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 135 transitions, 909 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-22 13:46:06,344 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 485 flow [2024-11-22 13:46:06,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2024-11-22 13:46:06,344 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-11-22 13:46:06,344 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 485 flow [2024-11-22 13:46:06,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:06,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:06,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:06,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:46:06,345 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:06,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1994305324, now seen corresponding path program 4 times [2024-11-22 13:46:06,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:06,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221152980] [2024-11-22 13:46:06,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:06,353 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:06,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:06,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:06,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221152980] [2024-11-22 13:46:06,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221152980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:06,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:06,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:06,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132457911] [2024-11-22 13:46:06,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:06,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:06,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:06,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:06,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:06,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:06,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:06,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:06,875 INFO L124 PetriNetUnfolderBase]: 5194/7160 cut-off events. [2024-11-22 13:46:06,875 INFO L125 PetriNetUnfolderBase]: For 10479/10479 co-relation queries the response was YES. [2024-11-22 13:46:06,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20432 conditions, 7160 events. 5194/7160 cut-off events. For 10479/10479 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 32442 event pairs, 1811 based on Foata normal form. 20/6514 useless extension candidates. Maximal degree in co-relation 20366. Up to 4803 conditions per place. [2024-11-22 13:46:06,899 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 90 selfloop transitions, 6 changer transitions 11/108 dead transitions. [2024-11-22 13:46:06,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 791 flow [2024-11-22 13:46:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:46:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:46:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-22 13:46:06,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-11-22 13:46:06,900 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 485 flow. Second operand 4 states and 94 transitions. [2024-11-22 13:46:06,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 791 flow [2024-11-22 13:46:06,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 108 transitions, 755 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:06,918 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 440 flow [2024-11-22 13:46:06,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-11-22 13:46:06,919 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-11-22 13:46:06,919 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 440 flow [2024-11-22 13:46:06,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:06,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:06,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:06,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:46:06,919 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:06,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1582614392, now seen corresponding path program 5 times [2024-11-22 13:46:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037212112] [2024-11-22 13:46:06,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:06,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:06,931 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:06,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:06,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:06,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037212112] [2024-11-22 13:46:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037212112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:06,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459114424] [2024-11-22 13:46:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:06,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:06,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:06,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 440 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:06,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:06,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:06,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:07,405 INFO L124 PetriNetUnfolderBase]: 5170/7136 cut-off events. [2024-11-22 13:46:07,405 INFO L125 PetriNetUnfolderBase]: For 7821/7821 co-relation queries the response was YES. [2024-11-22 13:46:07,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20165 conditions, 7136 events. 5170/7136 cut-off events. For 7821/7821 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 32595 event pairs, 3140 based on Foata normal form. 20/6490 useless extension candidates. Maximal degree in co-relation 20100. Up to 6362 conditions per place. [2024-11-22 13:46:07,443 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 87 selfloop transitions, 2 changer transitions 14/104 dead transitions. [2024-11-22 13:46:07,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 104 transitions, 728 flow [2024-11-22 13:46:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:46:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:46:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-22 13:46:07,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-11-22 13:46:07,444 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 440 flow. Second operand 4 states and 93 transitions. [2024-11-22 13:46:07,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 104 transitions, 728 flow [2024-11-22 13:46:07,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 707 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:07,459 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 405 flow [2024-11-22 13:46:07,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-11-22 13:46:07,460 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-11-22 13:46:07,460 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 405 flow [2024-11-22 13:46:07,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:07,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:07,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:07,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:46:07,461 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:07,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:07,461 INFO L85 PathProgramCache]: Analyzing trace with hash -70028716, now seen corresponding path program 5 times [2024-11-22 13:46:07,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:07,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173512222] [2024-11-22 13:46:07,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:07,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:07,475 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:07,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:07,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:07,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173512222] [2024-11-22 13:46:07,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173512222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:07,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:07,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:07,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647792159] [2024-11-22 13:46:07,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:07,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:07,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:07,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:07,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:07,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:07,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:07,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:07,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:07,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:07,874 INFO L124 PetriNetUnfolderBase]: 4736/6503 cut-off events. [2024-11-22 13:46:07,874 INFO L125 PetriNetUnfolderBase]: For 5573/5573 co-relation queries the response was YES. [2024-11-22 13:46:07,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17950 conditions, 6503 events. 4736/6503 cut-off events. For 5573/5573 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 28878 event pairs, 3027 based on Foata normal form. 20/5911 useless extension candidates. Maximal degree in co-relation 17887. Up to 6346 conditions per place. [2024-11-22 13:46:07,903 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 66 selfloop transitions, 0 changer transitions 15/82 dead transitions. [2024-11-22 13:46:07,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 578 flow [2024-11-22 13:46:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:46:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:46:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-22 13:46:07,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37755102040816324 [2024-11-22 13:46:07,904 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 405 flow. Second operand 4 states and 74 transitions. [2024-11-22 13:46:07,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 578 flow [2024-11-22 13:46:07,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 571 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:07,914 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 360 flow [2024-11-22 13:46:07,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=360, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-11-22 13:46:07,915 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-11-22 13:46:07,915 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 360 flow [2024-11-22 13:46:07,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:07,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:07,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:07,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 13:46:07,915 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:07,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1997656780, now seen corresponding path program 6 times [2024-11-22 13:46:07,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:07,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824297601] [2024-11-22 13:46:07,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:07,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:07,924 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:07,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:07,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:07,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824297601] [2024-11-22 13:46:07,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824297601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:07,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:07,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:46:07,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660728418] [2024-11-22 13:46:07,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:07,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:46:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:07,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:46:07,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:46:07,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:07,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:07,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:07,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:07,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:08,330 INFO L124 PetriNetUnfolderBase]: 4309/5882 cut-off events. [2024-11-22 13:46:08,330 INFO L125 PetriNetUnfolderBase]: For 4628/4628 co-relation queries the response was YES. [2024-11-22 13:46:08,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16277 conditions, 5882 events. 4309/5882 cut-off events. For 4628/4628 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25060 event pairs, 858 based on Foata normal form. 20/5345 useless extension candidates. Maximal degree in co-relation 16263. Up to 5441 conditions per place. [2024-11-22 13:46:08,353 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 73 selfloop transitions, 4 changer transitions 11/89 dead transitions. [2024-11-22 13:46:08,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 89 transitions, 577 flow [2024-11-22 13:46:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:46:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:46:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-22 13:46:08,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-22 13:46:08,355 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 360 flow. Second operand 4 states and 84 transitions. [2024-11-22 13:46:08,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 89 transitions, 577 flow [2024-11-22 13:46:08,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 89 transitions, 575 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:08,363 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 325 flow [2024-11-22 13:46:08,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-11-22 13:46:08,364 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-11-22 13:46:08,364 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 325 flow [2024-11-22 13:46:08,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:08,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:08,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:08,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 13:46:08,364 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:08,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash 93535605, now seen corresponding path program 1 times [2024-11-22 13:46:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:08,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513026531] [2024-11-22 13:46:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:08,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:08,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:08,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513026531] [2024-11-22 13:46:08,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513026531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:08,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:08,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:46:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698772750] [2024-11-22 13:46:08,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:08,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:46:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:46:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:46:08,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:08,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 325 flow. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:08,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:08,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:08,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:09,750 INFO L124 PetriNetUnfolderBase]: 8805/12073 cut-off events. [2024-11-22 13:46:09,750 INFO L125 PetriNetUnfolderBase]: For 8882/8882 co-relation queries the response was YES. [2024-11-22 13:46:09,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33182 conditions, 12073 events. 8805/12073 cut-off events. For 8882/8882 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 58733 event pairs, 1857 based on Foata normal form. 1/10936 useless extension candidates. Maximal degree in co-relation 33168. Up to 3473 conditions per place. [2024-11-22 13:46:09,804 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 173 selfloop transitions, 18 changer transitions 3/195 dead transitions. [2024-11-22 13:46:09,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 195 transitions, 1339 flow [2024-11-22 13:46:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:46:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:46:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-11-22 13:46:09,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41950113378684806 [2024-11-22 13:46:09,805 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 325 flow. Second operand 9 states and 185 transitions. [2024-11-22 13:46:09,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 195 transitions, 1339 flow [2024-11-22 13:46:09,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 195 transitions, 1306 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:09,822 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 448 flow [2024-11-22 13:46:09,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-11-22 13:46:09,822 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-11-22 13:46:09,822 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 448 flow [2024-11-22 13:46:09,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:09,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:09,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:09,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:46:09,823 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:09,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 501131277, now seen corresponding path program 1 times [2024-11-22 13:46:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:09,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148333705] [2024-11-22 13:46:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:09,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:09,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148333705] [2024-11-22 13:46:09,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148333705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:09,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323029474] [2024-11-22 13:46:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:09,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:09,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:09,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:09,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:46:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:10,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 13:46:10,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:10,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323029474] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:11,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:11,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 12] total 25 [2024-11-22 13:46:11,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429722637] [2024-11-22 13:46:11,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:11,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:46:11,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:11,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:46:11,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-11-22 13:46:11,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:11,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 448 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:11,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:11,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:11,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:14,846 INFO L124 PetriNetUnfolderBase]: 20783/29005 cut-off events. [2024-11-22 13:46:14,846 INFO L125 PetriNetUnfolderBase]: For 23685/23685 co-relation queries the response was YES. [2024-11-22 13:46:14,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85691 conditions, 29005 events. 20783/29005 cut-off events. For 23685/23685 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 168667 event pairs, 2022 based on Foata normal form. 1/26358 useless extension candidates. Maximal degree in co-relation 85674. Up to 7192 conditions per place. [2024-11-22 13:46:15,046 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 356 selfloop transitions, 99 changer transitions 9/465 dead transitions. [2024-11-22 13:46:15,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 465 transitions, 3393 flow [2024-11-22 13:46:15,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 339 transitions. [2024-11-22 13:46:15,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49416909620991256 [2024-11-22 13:46:15,048 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 448 flow. Second operand 14 states and 339 transitions. [2024-11-22 13:46:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 465 transitions, 3393 flow [2024-11-22 13:46:15,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 465 transitions, 3383 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-22 13:46:15,109 INFO L231 Difference]: Finished difference. Result has 102 places, 187 transitions, 1517 flow [2024-11-22 13:46:15,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1517, PETRI_PLACES=102, PETRI_TRANSITIONS=187} [2024-11-22 13:46:15,110 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-11-22 13:46:15,110 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 187 transitions, 1517 flow [2024-11-22 13:46:15,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:15,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:15,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:15,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:46:15,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:15,312 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:15,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:15,312 INFO L85 PathProgramCache]: Analyzing trace with hash 79263759, now seen corresponding path program 2 times [2024-11-22 13:46:15,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:15,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869227519] [2024-11-22 13:46:15,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:15,332 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:15,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:15,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:15,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869227519] [2024-11-22 13:46:15,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869227519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:15,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:46:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835444585] [2024-11-22 13:46:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:15,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:46:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:46:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:46:15,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:15,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 187 transitions, 1517 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:15,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:15,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:15,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:18,935 INFO L124 PetriNetUnfolderBase]: 31380/43959 cut-off events. [2024-11-22 13:46:18,935 INFO L125 PetriNetUnfolderBase]: For 86037/86037 co-relation queries the response was YES. [2024-11-22 13:46:19,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154963 conditions, 43959 events. 31380/43959 cut-off events. For 86037/86037 co-relation queries the response was YES. Maximal size of possible extension queue 1601. Compared 272568 event pairs, 4222 based on Foata normal form. 1/39990 useless extension candidates. Maximal degree in co-relation 154936. Up to 11631 conditions per place. [2024-11-22 13:46:19,289 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 397 selfloop transitions, 180 changer transitions 5/583 dead transitions. [2024-11-22 13:46:19,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 583 transitions, 5307 flow [2024-11-22 13:46:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 332 transitions. [2024-11-22 13:46:19,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4839650145772595 [2024-11-22 13:46:19,291 INFO L175 Difference]: Start difference. First operand has 102 places, 187 transitions, 1517 flow. Second operand 14 states and 332 transitions. [2024-11-22 13:46:19,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 583 transitions, 5307 flow [2024-11-22 13:46:20,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 583 transitions, 5232 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:20,111 INFO L231 Difference]: Finished difference. Result has 123 places, 294 transitions, 3171 flow [2024-11-22 13:46:20,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3171, PETRI_PLACES=123, PETRI_TRANSITIONS=294} [2024-11-22 13:46:20,111 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-11-22 13:46:20,111 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 294 transitions, 3171 flow [2024-11-22 13:46:20,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:20,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:20,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:20,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 13:46:20,112 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:20,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1398017429, now seen corresponding path program 3 times [2024-11-22 13:46:20,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:20,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976467519] [2024-11-22 13:46:20,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:20,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:20,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:20,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:20,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:20,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976467519] [2024-11-22 13:46:20,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976467519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:20,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:20,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:46:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128312709] [2024-11-22 13:46:20,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:20,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:46:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:46:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:46:20,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:20,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 294 transitions, 3171 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:20,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:20,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:20,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:27,278 INFO L124 PetriNetUnfolderBase]: 45439/63810 cut-off events. [2024-11-22 13:46:27,279 INFO L125 PetriNetUnfolderBase]: For 189346/189346 co-relation queries the response was YES. [2024-11-22 13:46:27,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243896 conditions, 63810 events. 45439/63810 cut-off events. For 189346/189346 co-relation queries the response was YES. Maximal size of possible extension queue 2404. Compared 417034 event pairs, 6569 based on Foata normal form. 3/57934 useless extension candidates. Maximal degree in co-relation 243859. Up to 15891 conditions per place. [2024-11-22 13:46:27,928 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 430 selfloop transitions, 238 changer transitions 6/675 dead transitions. [2024-11-22 13:46:27,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 675 transitions, 7652 flow [2024-11-22 13:46:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:46:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:46:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 316 transitions. [2024-11-22 13:46:27,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4606413994169096 [2024-11-22 13:46:27,931 INFO L175 Difference]: Start difference. First operand has 123 places, 294 transitions, 3171 flow. Second operand 14 states and 316 transitions. [2024-11-22 13:46:27,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 675 transitions, 7652 flow [2024-11-22 13:46:30,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 675 transitions, 7502 flow, removed 75 selfloop flow, removed 0 redundant places. [2024-11-22 13:46:30,688 INFO L231 Difference]: Finished difference. Result has 143 places, 406 transitions, 5250 flow [2024-11-22 13:46:30,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3105, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5250, PETRI_PLACES=143, PETRI_TRANSITIONS=406} [2024-11-22 13:46:30,688 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-11-22 13:46:30,688 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 406 transitions, 5250 flow [2024-11-22 13:46:30,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:30,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:30,689 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:30,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 13:46:30,689 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:30,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash -702073257, now seen corresponding path program 4 times [2024-11-22 13:46:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139874298] [2024-11-22 13:46:30,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:30,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:30,706 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:30,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139874298] [2024-11-22 13:46:30,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139874298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416890135] [2024-11-22 13:46:30,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:30,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:30,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:30,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:30,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:46:30,980 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:30,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:30,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 13:46:30,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:31,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:32,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416890135] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:32,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:46:32,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 11] total 26 [2024-11-22 13:46:32,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639821551] [2024-11-22 13:46:32,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:32,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:46:32,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:46:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:46:32,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:32,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 406 transitions, 5250 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:32,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:32,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:32,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:44,067 INFO L124 PetriNetUnfolderBase]: 66126/92703 cut-off events. [2024-11-22 13:46:44,068 INFO L125 PetriNetUnfolderBase]: For 364065/364065 co-relation queries the response was YES. [2024-11-22 13:46:44,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373966 conditions, 92703 events. 66126/92703 cut-off events. For 364065/364065 co-relation queries the response was YES. Maximal size of possible extension queue 3481. Compared 629598 event pairs, 7036 based on Foata normal form. 2/83677 useless extension candidates. Maximal degree in co-relation 373921. Up to 27350 conditions per place. [2024-11-22 13:46:45,391 INFO L140 encePairwiseOnDemand]: 32/49 looper letters, 631 selfloop transitions, 512 changer transitions 10/1154 dead transitions. [2024-11-22 13:46:45,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1154 transitions, 14944 flow [2024-11-22 13:46:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 13:46:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 13:46:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 492 transitions. [2024-11-22 13:46:45,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-11-22 13:46:45,394 INFO L175 Difference]: Start difference. First operand has 143 places, 406 transitions, 5250 flow. Second operand 24 states and 492 transitions. [2024-11-22 13:46:45,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1154 transitions, 14944 flow [2024-11-22 13:46:52,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 1154 transitions, 14782 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-22 13:46:52,394 INFO L231 Difference]: Finished difference. Result has 179 places, 710 transitions, 11182 flow [2024-11-22 13:46:52,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5158, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=11182, PETRI_PLACES=179, PETRI_TRANSITIONS=710} [2024-11-22 13:46:52,395 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2024-11-22 13:46:52,395 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 710 transitions, 11182 flow [2024-11-22 13:46:52,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:52,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:52,395 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:52,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:46:52,596 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,SelfDestructingSolverStorable22 [2024-11-22 13:46:52,597 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:52,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash 532210593, now seen corresponding path program 5 times [2024-11-22 13:46:52,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:52,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897493312] [2024-11-22 13:46:52,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:52,609 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:52,609 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897493312] [2024-11-22 13:46:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897493312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:46:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629436772] [2024-11-22 13:46:52,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:52,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:46:52,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:52,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:46:52,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:46:52,775 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:52,775 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:52,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 13:46:52,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:46:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:53,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:46:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:54,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629436772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:46:54,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:46:54,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 27 [2024-11-22 13:46:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844579385] [2024-11-22 13:46:54,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:46:54,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 13:46:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:54,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 13:46:54,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2024-11-22 13:46:54,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:54,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 710 transitions, 11182 flow. Second operand has 28 states, 28 states have (on average 7.214285714285714) internal successors, (202), 28 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:54,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:54,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:54,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand