./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:47:50,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:47:50,827 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:47:50,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:47:50,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:47:50,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:47:50,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:47:50,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:47:50,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:47:50,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:47:50,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:47:50,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:47:50,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:47:50,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:47:50,862 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:47:50,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:47:50,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:47:50,863 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:47:50,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:47:50,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:47:50,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:47:50,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:47:50,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:47:50,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:47:50,866 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:47:50,866 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:47:50,866 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:47:50,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:47:50,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:47:50,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:47:50,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:47:50,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:47:50,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:50,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:47:50,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:47:50,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:47:50,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:47:50,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:47:50,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:47:50,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:47:50,870 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:47:50,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:47:50,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2024-11-19 01:47:51,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:47:51,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:47:51,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:47:51,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:47:51,151 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:47:51,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-19 01:47:52,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:47:52,627 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:47:52,628 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-19 01:47:52,635 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e74148f/d24c4a937d58474ba615e7edd655588d/FLAG3efff35be [2024-11-19 01:47:52,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e74148f/d24c4a937d58474ba615e7edd655588d [2024-11-19 01:47:52,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:47:52,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:47:52,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:52,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:47:52,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:47:52,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a003cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52, skipping insertion in model container [2024-11-19 01:47:52,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:47:52,852 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/parallel-misc-1.wvr.c[2781,2794] [2024-11-19 01:47:52,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:52,868 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:47:52,887 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/parallel-misc-1.wvr.c[2781,2794] [2024-11-19 01:47:52,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:52,905 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:47:52,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52 WrapperNode [2024-11-19 01:47:52,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:52,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:52,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:47:52,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:47:52,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,941 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2024-11-19 01:47:52,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:52,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:47:52,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:47:52,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:47:52,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,979 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 01:47:52,980 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,980 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:52,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:53,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:47:53,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:47:53,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:47:53,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:47:53,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (1/1) ... [2024-11-19 01:47:53,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:53,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:53,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:47:53,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:47:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:47:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:47:53,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:47:53,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:47:53,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:47:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:47:53,075 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:47:53,169 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:47:53,170 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:47:53,570 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:47:53,570 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:47:53,890 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:47:53,890 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 01:47:53,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:53 BoogieIcfgContainer [2024-11-19 01:47:53,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:47:53,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:47:53,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:47:53,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:47:53,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:52" (1/3) ... [2024-11-19 01:47:53,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7461c67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:53, skipping insertion in model container [2024-11-19 01:47:53,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:52" (2/3) ... [2024-11-19 01:47:53,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7461c67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:53, skipping insertion in model container [2024-11-19 01:47:53,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:53" (3/3) ... [2024-11-19 01:47:53,898 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-11-19 01:47:53,913 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:47:53,913 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:47:53,913 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:47:53,961 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:47:53,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 54 flow [2024-11-19 01:47:54,014 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2024-11-19 01:47:54,014 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:47:54,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 3/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-19 01:47:54,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 54 flow [2024-11-19 01:47:54,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 46 flow [2024-11-19 01:47:54,030 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:47:54,037 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;@4be3a0c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:47:54,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:47:54,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:47:54,047 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-11-19 01:47:54,047 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:47:54,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:54,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:54,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:47:54,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash 21008040, now seen corresponding path program 1 times [2024-11-19 01:47:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948088789] [2024-11-19 01:47:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948088789] [2024-11-19 01:47:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948088789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:54,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:54,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:47:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306810447] [2024-11-19 01:47:54,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:54,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:47:54,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:47:54,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:54,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:54,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:47:54,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:54,816 INFO L124 PetriNetUnfolderBase]: 93/152 cut-off events. [2024-11-19 01:47:54,817 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 01:47:54,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 152 events. 93/152 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 429 event pairs, 8 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 267. Up to 102 conditions per place. [2024-11-19 01:47:54,820 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 25 selfloop transitions, 10 changer transitions 1/39 dead transitions. [2024-11-19 01:47:54,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 39 transitions, 177 flow [2024-11-19 01:47:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:47:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:47:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-19 01:47:54,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-19 01:47:54,839 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 5 states and 62 transitions. [2024-11-19 01:47:54,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 39 transitions, 177 flow [2024-11-19 01:47:54,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:47:54,847 INFO L231 Difference]: Finished difference. Result has 24 places, 26 transitions, 101 flow [2024-11-19 01:47:54,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=24, PETRI_TRANSITIONS=26} [2024-11-19 01:47:54,853 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2024-11-19 01:47:54,854 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 26 transitions, 101 flow [2024-11-19 01:47:54,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:54,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:54,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:54,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:47:54,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:47:54,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1326643493, now seen corresponding path program 1 times [2024-11-19 01:47:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010183270] [2024-11-19 01:47:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:54,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:55,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010183270] [2024-11-19 01:47:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010183270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:55,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:55,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:47:55,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74620649] [2024-11-19 01:47:55,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:55,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:55,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:47:55,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 26 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:55,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:55,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:47:55,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:55,133 INFO L124 PetriNetUnfolderBase]: 121/208 cut-off events. [2024-11-19 01:47:55,134 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-19 01:47:55,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 208 events. 121/208 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 709 event pairs, 41 based on Foata normal form. 8/192 useless extension candidates. Maximal degree in co-relation 368. Up to 107 conditions per place. [2024-11-19 01:47:55,137 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 31 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-11-19 01:47:55,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 40 transitions, 230 flow [2024-11-19 01:47:55,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-19 01:47:55,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-19 01:47:55,140 INFO L175 Difference]: Start difference. First operand has 24 places, 26 transitions, 101 flow. Second operand 4 states and 45 transitions. [2024-11-19 01:47:55,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 40 transitions, 230 flow [2024-11-19 01:47:55,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 40 transitions, 224 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-19 01:47:55,144 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 153 flow [2024-11-19 01:47:55,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2024-11-19 01:47:55,145 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2024-11-19 01:47:55,145 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 153 flow [2024-11-19 01:47:55,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:55,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:55,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:55,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:47:55,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:47:55,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2063276826, now seen corresponding path program 1 times [2024-11-19 01:47:55,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:55,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924711562] [2024-11-19 01:47:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:55,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:55,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:55,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924711562] [2024-11-19 01:47:55,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924711562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:55,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:55,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:47:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077356670] [2024-11-19 01:47:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:55,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:55,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:47:55,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:55,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:55,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:47:55,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:55,349 INFO L124 PetriNetUnfolderBase]: 96/171 cut-off events. [2024-11-19 01:47:55,350 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-19 01:47:55,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 171 events. 96/171 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 562 event pairs, 26 based on Foata normal form. 5/169 useless extension candidates. Maximal degree in co-relation 497. Up to 88 conditions per place. [2024-11-19 01:47:55,353 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 28 selfloop transitions, 4 changer transitions 4/39 dead transitions. [2024-11-19 01:47:55,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 268 flow [2024-11-19 01:47:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-19 01:47:55,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-19 01:47:55,357 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 153 flow. Second operand 4 states and 44 transitions. [2024-11-19 01:47:55,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 268 flow [2024-11-19 01:47:55,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 264 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-19 01:47:55,360 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 139 flow [2024-11-19 01:47:55,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-11-19 01:47:55,361 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2024-11-19 01:47:55,361 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 139 flow [2024-11-19 01:47:55,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:55,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:55,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:55,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:47:55,362 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:47:55,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1339064740, now seen corresponding path program 1 times [2024-11-19 01:47:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032566130] [2024-11-19 01:47:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:55,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:55,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032566130] [2024-11-19 01:47:55,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032566130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:55,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48866139] [2024-11-19 01:47:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:55,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:55,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:55,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:55,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:47:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:55,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:47:55,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:55,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48866139] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:55,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:47:55,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2024-11-19 01:47:55,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066109065] [2024-11-19 01:47:55,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:55,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:47:55,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:47:55,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:55,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:55,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:47:55,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:55,774 INFO L124 PetriNetUnfolderBase]: 76/129 cut-off events. [2024-11-19 01:47:55,775 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-19 01:47:55,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 129 events. 76/129 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 339 event pairs, 12 based on Foata normal form. 9/133 useless extension candidates. Maximal degree in co-relation 452. Up to 80 conditions per place. [2024-11-19 01:47:55,776 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-11-19 01:47:55,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 243 flow [2024-11-19 01:47:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:47:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:47:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 46 transitions. [2024-11-19 01:47:55,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-11-19 01:47:55,781 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 139 flow. Second operand 5 states and 46 transitions. [2024-11-19 01:47:55,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 243 flow [2024-11-19 01:47:55,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 201 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-19 01:47:55,783 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 138 flow [2024-11-19 01:47:55,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-19 01:47:55,784 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2024-11-19 01:47:55,784 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 138 flow [2024-11-19 01:47:55,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:55,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:55,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:55,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:47:55,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:55,990 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:47:55,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash -94130901, now seen corresponding path program 1 times [2024-11-19 01:47:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:55,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836814274] [2024-11-19 01:47:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:56,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836814274] [2024-11-19 01:47:56,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836814274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625423068] [2024-11-19 01:47:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:56,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:56,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:56,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:56,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:47:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:56,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:47:56,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:56,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:56,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625423068] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:56,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:47:56,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2024-11-19 01:47:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241044376] [2024-11-19 01:47:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:56,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:56,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:47:56,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:47:56,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:56,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:56,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:47:56,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:56,290 INFO L124 PetriNetUnfolderBase]: 59/102 cut-off events. [2024-11-19 01:47:56,290 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-19 01:47:56,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 102 events. 59/102 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 213 event pairs, 5 based on Foata normal form. 9/107 useless extension candidates. Maximal degree in co-relation 351. Up to 80 conditions per place. [2024-11-19 01:47:56,293 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-11-19 01:47:56,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 228 flow [2024-11-19 01:47:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:47:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:47:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-19 01:47:56,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-19 01:47:56,294 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 138 flow. Second operand 5 states and 47 transitions. [2024-11-19 01:47:56,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 228 flow [2024-11-19 01:47:56,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:56,295 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 159 flow [2024-11-19 01:47:56,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-19 01:47:56,296 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 14 predicate places. [2024-11-19 01:47:56,296 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 159 flow [2024-11-19 01:47:56,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:56,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:56,297 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:56,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:47:56,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:56,501 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:47:56,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1914839235, now seen corresponding path program 1 times [2024-11-19 01:47:56,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:56,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543772512] [2024-11-19 01:47:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:57,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543772512] [2024-11-19 01:47:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543772512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582259116] [2024-11-19 01:47:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:57,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:57,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:57,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:47:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:57,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 01:47:57,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:57,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:47:57,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2024-11-19 01:47:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:57,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:58,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582259116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:58,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:58,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-19 01:47:58,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770346431] [2024-11-19 01:47:58,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:58,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:47:58,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:58,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:47:58,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:47:58,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:47:58,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 159 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:58,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:58,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:47:58,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:58,376 INFO L124 PetriNetUnfolderBase]: 72/129 cut-off events. [2024-11-19 01:47:58,377 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-19 01:47:58,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 129 events. 72/129 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 324 event pairs, 0 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 491. Up to 87 conditions per place. [2024-11-19 01:47:58,378 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 31 selfloop transitions, 17 changer transitions 3/54 dead transitions. [2024-11-19 01:47:58,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 357 flow [2024-11-19 01:47:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:47:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:47:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-19 01:47:58,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-19 01:47:58,380 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 159 flow. Second operand 9 states and 88 transitions. [2024-11-19 01:47:58,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 357 flow [2024-11-19 01:47:58,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:58,385 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 275 flow [2024-11-19 01:47:58,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=275, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-11-19 01:47:58,385 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2024-11-19 01:47:58,385 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 275 flow [2024-11-19 01:47:58,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:58,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:58,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:58,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:47:58,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:58,588 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:47:58,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:58,588 INFO L85 PathProgramCache]: Analyzing trace with hash -168671343, now seen corresponding path program 2 times [2024-11-19 01:47:58,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:58,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381742010] [2024-11-19 01:47:58,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:58,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:58,623 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:58,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:59,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381742010] [2024-11-19 01:47:59,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381742010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787325209] [2024-11-19 01:47:59,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:59,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:59,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:59,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:59,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:47:59,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:59,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:59,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 01:47:59,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:59,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:47:59,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2024-11-19 01:47:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:59,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:59,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787325209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:59,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:59,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-19 01:47:59,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816622000] [2024-11-19 01:47:59,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:59,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:47:59,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:47:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:47:59,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:47:59,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 275 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:59,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:59,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:47:59,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:00,147 INFO L124 PetriNetUnfolderBase]: 72/131 cut-off events. [2024-11-19 01:48:00,147 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-11-19 01:48:00,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 131 events. 72/131 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 332 event pairs, 2 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 610. Up to 97 conditions per place. [2024-11-19 01:48:00,148 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 26 selfloop transitions, 20 changer transitions 3/52 dead transitions. [2024-11-19 01:48:00,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 418 flow [2024-11-19 01:48:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:48:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:48:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-11-19 01:48:00,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-19 01:48:00,150 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 275 flow. Second operand 10 states and 96 transitions. [2024-11-19 01:48:00,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 418 flow [2024-11-19 01:48:00,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 380 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-19 01:48:00,152 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 298 flow [2024-11-19 01:48:00,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=298, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-11-19 01:48:00,153 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 31 predicate places. [2024-11-19 01:48:00,153 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 298 flow [2024-11-19 01:48:00,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:00,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:00,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:00,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:48:00,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:00,354 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:00,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:00,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1822197659, now seen corresponding path program 3 times [2024-11-19 01:48:00,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:00,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458444928] [2024-11-19 01:48:00,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:48:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:00,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:48:00,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:00,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:00,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458444928] [2024-11-19 01:48:00,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458444928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:00,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083496666] [2024-11-19 01:48:00,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:48:00,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:00,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:00,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:00,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:48:00,872 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:48:00,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:00,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 01:48:00,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:01,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2024-11-19 01:48:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:01,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:01,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:01,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 145 [2024-11-19 01:48:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083496666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:01,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:01,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2024-11-19 01:48:01,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653000417] [2024-11-19 01:48:01,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:01,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:48:01,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:01,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:48:01,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:48:01,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:01,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 298 flow. Second operand has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:01,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:01,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:01,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:01,890 INFO L124 PetriNetUnfolderBase]: 95/170 cut-off events. [2024-11-19 01:48:01,890 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-11-19 01:48:01,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 170 events. 95/170 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 489 event pairs, 0 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 815. Up to 107 conditions per place. [2024-11-19 01:48:01,891 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 38 selfloop transitions, 22 changer transitions 3/66 dead transitions. [2024-11-19 01:48:01,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 547 flow [2024-11-19 01:48:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:48:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:48:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-11-19 01:48:01,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:48:01,893 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 298 flow. Second operand 11 states and 110 transitions. [2024-11-19 01:48:01,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 547 flow [2024-11-19 01:48:01,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 456 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-11-19 01:48:01,896 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 328 flow [2024-11-19 01:48:01,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=328, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-11-19 01:48:01,896 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 33 predicate places. [2024-11-19 01:48:01,896 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 328 flow [2024-11-19 01:48:01,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:01,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:01,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:01,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:48:02,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:02,102 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:02,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1625165103, now seen corresponding path program 4 times [2024-11-19 01:48:02,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:02,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106566898] [2024-11-19 01:48:02,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:48:02,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:02,134 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:48:02,135 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106566898] [2024-11-19 01:48:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106566898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404073642] [2024-11-19 01:48:02,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:48:02,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:02,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:02,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:48:02,952 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:48:02,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:02,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 01:48:02,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:03,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2024-11-19 01:48:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:03,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:03,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:03,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 144 [2024-11-19 01:48:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:03,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404073642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:03,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:03,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-19 01:48:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730790498] [2024-11-19 01:48:03,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:03,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:48:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:48:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:48:03,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:03,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 328 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:03,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:03,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:03,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:03,749 INFO L124 PetriNetUnfolderBase]: 96/175 cut-off events. [2024-11-19 01:48:03,750 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2024-11-19 01:48:03,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 175 events. 96/175 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 529 event pairs, 1 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 851. Up to 141 conditions per place. [2024-11-19 01:48:03,751 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 36 selfloop transitions, 17 changer transitions 3/59 dead transitions. [2024-11-19 01:48:03,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 497 flow [2024-11-19 01:48:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:48:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:48:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-19 01:48:03,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-19 01:48:03,754 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 328 flow. Second operand 9 states and 84 transitions. [2024-11-19 01:48:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 497 flow [2024-11-19 01:48:03,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 435 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-11-19 01:48:03,758 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 339 flow [2024-11-19 01:48:03,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=339, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-11-19 01:48:03,758 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 37 predicate places. [2024-11-19 01:48:03,758 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 339 flow [2024-11-19 01:48:03,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:03,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:03,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:03,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:48:03,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:03,964 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:03,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1825793813, now seen corresponding path program 5 times [2024-11-19 01:48:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:03,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050503197] [2024-11-19 01:48:03,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:48:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:03,985 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:03,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050503197] [2024-11-19 01:48:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050503197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144454377] [2024-11-19 01:48:04,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:48:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:04,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:04,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:48:04,565 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:04,565 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:04,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 01:48:04,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:04,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:48:04,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2024-11-19 01:48:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:04,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144454377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:05,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:05,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-19 01:48:05,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773090171] [2024-11-19 01:48:05,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:05,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:48:05,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:05,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:48:05,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:48:05,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:05,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 339 flow. Second operand has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:05,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:05,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:05,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:05,947 INFO L124 PetriNetUnfolderBase]: 158/287 cut-off events. [2024-11-19 01:48:05,947 INFO L125 PetriNetUnfolderBase]: For 1181/1181 co-relation queries the response was YES. [2024-11-19 01:48:05,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 287 events. 158/287 cut-off events. For 1181/1181 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 985 event pairs, 0 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 1359. Up to 102 conditions per place. [2024-11-19 01:48:05,951 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 54 selfloop transitions, 61 changer transitions 3/121 dead transitions. [2024-11-19 01:48:05,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 121 transitions, 1047 flow [2024-11-19 01:48:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 01:48:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 01:48:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 183 transitions. [2024-11-19 01:48:05,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-11-19 01:48:05,953 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 339 flow. Second operand 18 states and 183 transitions. [2024-11-19 01:48:05,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 121 transitions, 1047 flow [2024-11-19 01:48:05,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 121 transitions, 966 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-19 01:48:05,960 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 814 flow [2024-11-19 01:48:05,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=814, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2024-11-19 01:48:05,961 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 52 predicate places. [2024-11-19 01:48:05,962 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 814 flow [2024-11-19 01:48:05,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:05,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:05,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:05,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:48:06,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:06,163 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:06,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1748039303, now seen corresponding path program 6 times [2024-11-19 01:48:06,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:06,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200840974] [2024-11-19 01:48:06,164 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:06,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:06,192 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:48:06,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:06,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200840974] [2024-11-19 01:48:06,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200840974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710051584] [2024-11-19 01:48:06,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:06,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:06,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:06,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:06,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:48:06,585 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:48:06,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:06,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:48:06,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:06,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2024-11-19 01:48:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:06,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:06,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:06,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 144 [2024-11-19 01:48:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710051584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:07,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 01:48:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650434453] [2024-11-19 01:48:07,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:07,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:48:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:48:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:48:07,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:07,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 814 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:07,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:07,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:07,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:07,742 INFO L124 PetriNetUnfolderBase]: 209/374 cut-off events. [2024-11-19 01:48:07,743 INFO L125 PetriNetUnfolderBase]: For 2255/2255 co-relation queries the response was YES. [2024-11-19 01:48:07,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 374 events. 209/374 cut-off events. For 2255/2255 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1362 event pairs, 1 based on Foata normal form. 2/366 useless extension candidates. Maximal degree in co-relation 2065. Up to 162 conditions per place. [2024-11-19 01:48:07,746 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 63 selfloop transitions, 61 changer transitions 8/135 dead transitions. [2024-11-19 01:48:07,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1554 flow [2024-11-19 01:48:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:48:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:48:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 143 transitions. [2024-11-19 01:48:07,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107142857142857 [2024-11-19 01:48:07,748 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 814 flow. Second operand 14 states and 143 transitions. [2024-11-19 01:48:07,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1554 flow [2024-11-19 01:48:07,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 135 transitions, 1208 flow, removed 159 selfloop flow, removed 5 redundant places. [2024-11-19 01:48:07,756 INFO L231 Difference]: Finished difference. Result has 88 places, 105 transitions, 1050 flow [2024-11-19 01:48:07,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1050, PETRI_PLACES=88, PETRI_TRANSITIONS=105} [2024-11-19 01:48:07,757 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 67 predicate places. [2024-11-19 01:48:07,757 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 105 transitions, 1050 flow [2024-11-19 01:48:07,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:07,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:07,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:07,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 01:48:07,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 01:48:07,958 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:07,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:07,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1824745683, now seen corresponding path program 7 times [2024-11-19 01:48:07,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:07,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381827552] [2024-11-19 01:48:07,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:48:07,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:08,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381827552] [2024-11-19 01:48:08,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381827552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189678451] [2024-11-19 01:48:08,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:48:08,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:08,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:08,069 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:08,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:48:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:08,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:48:08,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:08,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189678451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:08,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 01:48:08,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837601232] [2024-11-19 01:48:08,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:08,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:48:08,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:08,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:48:08,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:48:08,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:08,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 105 transitions, 1050 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:08,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:08,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:08,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:08,375 INFO L124 PetriNetUnfolderBase]: 216/429 cut-off events. [2024-11-19 01:48:08,375 INFO L125 PetriNetUnfolderBase]: For 2807/2807 co-relation queries the response was YES. [2024-11-19 01:48:08,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 429 events. 216/429 cut-off events. For 2807/2807 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1870 event pairs, 46 based on Foata normal form. 24/451 useless extension candidates. Maximal degree in co-relation 2435. Up to 133 conditions per place. [2024-11-19 01:48:08,378 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 104 selfloop transitions, 19 changer transitions 5/131 dead transitions. [2024-11-19 01:48:08,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 131 transitions, 1554 flow [2024-11-19 01:48:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:48:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:48:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-11-19 01:48:08,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-19 01:48:08,380 INFO L175 Difference]: Start difference. First operand has 88 places, 105 transitions, 1050 flow. Second operand 7 states and 74 transitions. [2024-11-19 01:48:08,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 131 transitions, 1554 flow [2024-11-19 01:48:08,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 1345 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-11-19 01:48:08,391 INFO L231 Difference]: Finished difference. Result has 87 places, 96 transitions, 916 flow [2024-11-19 01:48:08,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=916, PETRI_PLACES=87, PETRI_TRANSITIONS=96} [2024-11-19 01:48:08,392 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 66 predicate places. [2024-11-19 01:48:08,392 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 96 transitions, 916 flow [2024-11-19 01:48:08,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:08,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:08,392 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:08,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:08,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:08,593 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:08,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash 204863006, now seen corresponding path program 8 times [2024-11-19 01:48:08,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:08,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020617645] [2024-11-19 01:48:08,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:08,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:08,610 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:08,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020617645] [2024-11-19 01:48:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020617645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564375363] [2024-11-19 01:48:08,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:08,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:08,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:08,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:08,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:48:08,754 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:08,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:08,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 01:48:08,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:08,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:08,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564375363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:08,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:08,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2024-11-19 01:48:08,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225101016] [2024-11-19 01:48:08,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:08,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:48:08,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:08,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:48:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:48:08,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:08,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 96 transitions, 916 flow. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:08,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:08,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:08,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:09,098 INFO L124 PetriNetUnfolderBase]: 193/400 cut-off events. [2024-11-19 01:48:09,099 INFO L125 PetriNetUnfolderBase]: For 2511/2511 co-relation queries the response was YES. [2024-11-19 01:48:09,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 400 events. 193/400 cut-off events. For 2511/2511 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1728 event pairs, 4 based on Foata normal form. 27/425 useless extension candidates. Maximal degree in co-relation 2191. Up to 124 conditions per place. [2024-11-19 01:48:09,102 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 70 selfloop transitions, 46 changer transitions 22/141 dead transitions. [2024-11-19 01:48:09,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 141 transitions, 1518 flow [2024-11-19 01:48:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:48:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:48:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 153 transitions. [2024-11-19 01:48:09,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-19 01:48:09,105 INFO L175 Difference]: Start difference. First operand has 87 places, 96 transitions, 916 flow. Second operand 15 states and 153 transitions. [2024-11-19 01:48:09,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 141 transitions, 1518 flow [2024-11-19 01:48:09,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 141 transitions, 1483 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-19 01:48:09,118 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 1070 flow [2024-11-19 01:48:09,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1070, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-11-19 01:48:09,119 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 77 predicate places. [2024-11-19 01:48:09,119 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 1070 flow [2024-11-19 01:48:09,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:09,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:09,120 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:09,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 01:48:09,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 01:48:09,325 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:09,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 512033749, now seen corresponding path program 9 times [2024-11-19 01:48:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666850298] [2024-11-19 01:48:09,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:48:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:09,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:48:09,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:48:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666850298] [2024-11-19 01:48:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666850298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077758790] [2024-11-19 01:48:09,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:48:09,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:09,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:09,425 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:09,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:48:09,492 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:48:09,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:09,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:48:09,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:48:09,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:48:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077758790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:09,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:09,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-19 01:48:09,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426764355] [2024-11-19 01:48:09,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:09,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:48:09,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:48:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:48:09,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:09,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 1070 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:09,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:09,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:09,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:09,710 INFO L124 PetriNetUnfolderBase]: 184/350 cut-off events. [2024-11-19 01:48:09,711 INFO L125 PetriNetUnfolderBase]: For 3490/3490 co-relation queries the response was YES. [2024-11-19 01:48:09,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 350 events. 184/350 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1328 event pairs, 20 based on Foata normal form. 22/369 useless extension candidates. Maximal degree in co-relation 2245. Up to 215 conditions per place. [2024-11-19 01:48:09,715 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 75 selfloop transitions, 25 changer transitions 0/103 dead transitions. [2024-11-19 01:48:09,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 103 transitions, 1440 flow [2024-11-19 01:48:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:48:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:48:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 67 transitions. [2024-11-19 01:48:09,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-11-19 01:48:09,717 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 1070 flow. Second operand 8 states and 67 transitions. [2024-11-19 01:48:09,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 103 transitions, 1440 flow [2024-11-19 01:48:09,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 1181 flow, removed 96 selfloop flow, removed 15 redundant places. [2024-11-19 01:48:09,730 INFO L231 Difference]: Finished difference. Result has 77 places, 89 transitions, 926 flow [2024-11-19 01:48:09,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=77, PETRI_TRANSITIONS=89} [2024-11-19 01:48:09,730 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 56 predicate places. [2024-11-19 01:48:09,730 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 89 transitions, 926 flow [2024-11-19 01:48:09,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:09,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:09,731 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:09,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:09,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 01:48:09,931 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:09,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:09,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1986896266, now seen corresponding path program 10 times [2024-11-19 01:48:09,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:09,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207557602] [2024-11-19 01:48:09,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:48:09,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:09,946 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:48:09,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:48:10,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:10,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207557602] [2024-11-19 01:48:10,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207557602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:10,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145815967] [2024-11-19 01:48:10,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:48:10,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:10,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:10,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:10,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:48:10,148 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:48:10,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:10,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:48:10,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:48:10,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:48:10,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145815967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:10,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:10,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-19 01:48:10,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892974429] [2024-11-19 01:48:10,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:10,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:48:10,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:48:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:48:10,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:10,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 89 transitions, 926 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:10,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:10,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:10,453 INFO L124 PetriNetUnfolderBase]: 191/363 cut-off events. [2024-11-19 01:48:10,454 INFO L125 PetriNetUnfolderBase]: For 2121/2121 co-relation queries the response was YES. [2024-11-19 01:48:10,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 363 events. 191/363 cut-off events. For 2121/2121 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1373 event pairs, 12 based on Foata normal form. 14/375 useless extension candidates. Maximal degree in co-relation 2105. Up to 169 conditions per place. [2024-11-19 01:48:10,457 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 81 selfloop transitions, 25 changer transitions 0/109 dead transitions. [2024-11-19 01:48:10,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 109 transitions, 1304 flow [2024-11-19 01:48:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:48:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:48:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2024-11-19 01:48:10,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-11-19 01:48:10,459 INFO L175 Difference]: Start difference. First operand has 77 places, 89 transitions, 926 flow. Second operand 9 states and 79 transitions. [2024-11-19 01:48:10,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 109 transitions, 1304 flow [2024-11-19 01:48:10,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 1253 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-11-19 01:48:10,466 INFO L231 Difference]: Finished difference. Result has 78 places, 91 transitions, 978 flow [2024-11-19 01:48:10,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=978, PETRI_PLACES=78, PETRI_TRANSITIONS=91} [2024-11-19 01:48:10,467 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 57 predicate places. [2024-11-19 01:48:10,467 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 91 transitions, 978 flow [2024-11-19 01:48:10,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:10,467 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:10,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 01:48:10,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 01:48:10,668 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:10,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1806728966, now seen corresponding path program 11 times [2024-11-19 01:48:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:10,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155908975] [2024-11-19 01:48:10,669 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:48:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:10,759 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:48:10,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:13,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:13,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155908975] [2024-11-19 01:48:13,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155908975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:13,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544739074] [2024-11-19 01:48:13,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:48:13,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:13,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:13,157 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:13,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:48:13,238 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:48:13,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:13,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-19 01:48:13,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:13,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 01:48:13,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:13,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 204 treesize of output 144 [2024-11-19 01:48:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:13,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:48:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544739074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:18,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:18,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2024-11-19 01:48:18,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12048105] [2024-11-19 01:48:18,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:18,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:48:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:48:18,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:48:18,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:18,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 978 flow. Second operand has 25 states, 25 states have (on average 6.76) internal successors, (169), 25 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:18,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:18,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:18,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:22,361 INFO L124 PetriNetUnfolderBase]: 342/594 cut-off events. [2024-11-19 01:48:22,361 INFO L125 PetriNetUnfolderBase]: For 3970/3970 co-relation queries the response was YES. [2024-11-19 01:48:22,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 594 events. 342/594 cut-off events. For 3970/3970 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2392 event pairs, 5 based on Foata normal form. 2/594 useless extension candidates. Maximal degree in co-relation 3702. Up to 304 conditions per place. [2024-11-19 01:48:22,372 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 93 selfloop transitions, 108 changer transitions 7/211 dead transitions. [2024-11-19 01:48:22,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 211 transitions, 2623 flow [2024-11-19 01:48:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 01:48:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 01:48:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 271 transitions. [2024-11-19 01:48:22,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4672413793103448 [2024-11-19 01:48:22,374 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 978 flow. Second operand 29 states and 271 transitions. [2024-11-19 01:48:22,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 211 transitions, 2623 flow [2024-11-19 01:48:22,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 211 transitions, 2576 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-19 01:48:22,389 INFO L231 Difference]: Finished difference. Result has 110 places, 160 transitions, 2325 flow [2024-11-19 01:48:22,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2325, PETRI_PLACES=110, PETRI_TRANSITIONS=160} [2024-11-19 01:48:22,390 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 89 predicate places. [2024-11-19 01:48:22,390 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 160 transitions, 2325 flow [2024-11-19 01:48:22,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.76) internal successors, (169), 25 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:22,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:22,391 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:22,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:22,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 01:48:22,591 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:22,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1306082004, now seen corresponding path program 12 times [2024-11-19 01:48:22,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:22,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75195897] [2024-11-19 01:48:22,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:22,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:22,652 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:48:22,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:24,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75195897] [2024-11-19 01:48:24,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75195897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287662362] [2024-11-19 01:48:24,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:24,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:24,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:24,006 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:24,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:48:24,084 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:48:24,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:24,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 01:48:24,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:24,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:48:25,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:25,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 274 treesize of output 262 [2024-11-19 01:48:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:26,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:33,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2024-11-19 01:48:33,278 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-19 01:48:33,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 83 [2024-11-19 01:48:33,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 244 treesize of output 216 [2024-11-19 01:48:33,330 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2024-11-19 01:48:33,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 422 treesize of output 1 [2024-11-19 01:48:33,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 168 [2024-11-19 01:48:33,340 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-19 01:48:33,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 360 treesize of output 1 [2024-11-19 01:48:33,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 171 [2024-11-19 01:48:33,353 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2024-11-19 01:48:33,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 324 treesize of output 1 [2024-11-19 01:48:33,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 86 [2024-11-19 01:48:33,367 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-19 01:48:33,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 1 [2024-11-19 01:48:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:33,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287662362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:33,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:33,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2024-11-19 01:48:33,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30799073] [2024-11-19 01:48:33,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:33,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 01:48:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 01:48:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2024-11-19 01:48:33,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:33,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 160 transitions, 2325 flow. Second operand has 27 states, 27 states have (on average 6.62962962962963) internal successors, (179), 27 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:33,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:33,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:33,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:35,014 INFO L124 PetriNetUnfolderBase]: 345/598 cut-off events. [2024-11-19 01:48:35,014 INFO L125 PetriNetUnfolderBase]: For 4384/4384 co-relation queries the response was YES. [2024-11-19 01:48:35,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4444 conditions, 598 events. 345/598 cut-off events. For 4384/4384 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2384 event pairs, 9 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 4382. Up to 484 conditions per place. [2024-11-19 01:48:35,020 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 149 selfloop transitions, 37 changer transitions 4/193 dead transitions. [2024-11-19 01:48:35,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 193 transitions, 2849 flow [2024-11-19 01:48:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 01:48:35,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 01:48:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 157 transitions. [2024-11-19 01:48:35,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-11-19 01:48:35,021 INFO L175 Difference]: Start difference. First operand has 110 places, 160 transitions, 2325 flow. Second operand 18 states and 157 transitions. [2024-11-19 01:48:35,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 193 transitions, 2849 flow [2024-11-19 01:48:35,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 193 transitions, 2283 flow, removed 271 selfloop flow, removed 7 redundant places. [2024-11-19 01:48:35,041 INFO L231 Difference]: Finished difference. Result has 123 places, 165 transitions, 1922 flow [2024-11-19 01:48:35,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1922, PETRI_PLACES=123, PETRI_TRANSITIONS=165} [2024-11-19 01:48:35,041 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 102 predicate places. [2024-11-19 01:48:35,042 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 165 transitions, 1922 flow [2024-11-19 01:48:35,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.62962962962963) internal successors, (179), 27 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:35,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:35,042 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:35,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 01:48:35,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:35,243 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:35,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1610660504, now seen corresponding path program 13 times [2024-11-19 01:48:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352615018] [2024-11-19 01:48:35,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:48:35,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:36,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:36,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352615018] [2024-11-19 01:48:36,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352615018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:36,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409230735] [2024-11-19 01:48:36,476 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:48:36,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:36,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:36,477 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:36,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 01:48:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:36,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 01:48:36,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:37,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:37,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 145 [2024-11-19 01:48:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:37,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:38,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:38,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 966 treesize of output 426 [2024-11-19 01:48:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:48:46,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409230735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:46,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2024-11-19 01:48:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843540446] [2024-11-19 01:48:46,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:46,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 01:48:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:46,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 01:48:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2024-11-19 01:48:46,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:46,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 165 transitions, 1922 flow. Second operand has 26 states, 26 states have (on average 6.653846153846154) internal successors, (173), 26 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:46,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:46,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:46,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:47,169 INFO L124 PetriNetUnfolderBase]: 359/618 cut-off events. [2024-11-19 01:48:47,170 INFO L125 PetriNetUnfolderBase]: For 3694/3694 co-relation queries the response was YES. [2024-11-19 01:48:47,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3910 conditions, 618 events. 359/618 cut-off events. For 3694/3694 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2479 event pairs, 10 based on Foata normal form. 1/615 useless extension candidates. Maximal degree in co-relation 3851. Up to 480 conditions per place. [2024-11-19 01:48:47,175 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 137 selfloop transitions, 60 changer transitions 4/204 dead transitions. [2024-11-19 01:48:47,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 204 transitions, 2514 flow [2024-11-19 01:48:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:48:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:48:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 190 transitions. [2024-11-19 01:48:47,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-19 01:48:47,177 INFO L175 Difference]: Start difference. First operand has 123 places, 165 transitions, 1922 flow. Second operand 21 states and 190 transitions. [2024-11-19 01:48:47,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 204 transitions, 2514 flow [2024-11-19 01:48:47,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 204 transitions, 2433 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-11-19 01:48:47,192 INFO L231 Difference]: Finished difference. Result has 134 places, 175 transitions, 2122 flow [2024-11-19 01:48:47,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2122, PETRI_PLACES=134, PETRI_TRANSITIONS=175} [2024-11-19 01:48:47,192 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 113 predicate places. [2024-11-19 01:48:47,193 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 175 transitions, 2122 flow [2024-11-19 01:48:47,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.653846153846154) internal successors, (173), 26 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:47,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:47,193 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:47,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 01:48:47,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 01:48:47,398 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:47,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash -828945838, now seen corresponding path program 14 times [2024-11-19 01:48:47,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:47,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655359675] [2024-11-19 01:48:47,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:47,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:47,440 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:47,440 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:48,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655359675] [2024-11-19 01:48:48,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655359675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267254787] [2024-11-19 01:48:48,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:48,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:48,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:48,378 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:48,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 01:48:48,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:48,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:48,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 01:48:48,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:48,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:48:49,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:48:49,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 266 treesize of output 258 [2024-11-19 01:48:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:50,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:56,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2024-11-19 01:48:57,000 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-19 01:48:57,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 83 [2024-11-19 01:48:57,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 86 [2024-11-19 01:48:57,039 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-19 01:48:57,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 1 [2024-11-19 01:48:57,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 168 [2024-11-19 01:48:57,048 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-19 01:48:57,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 360 treesize of output 1 [2024-11-19 01:48:57,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 244 treesize of output 216 [2024-11-19 01:48:57,060 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2024-11-19 01:48:57,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 422 treesize of output 1 [2024-11-19 01:48:57,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 171 [2024-11-19 01:48:57,075 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2024-11-19 01:48:57,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 324 treesize of output 1 [2024-11-19 01:48:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:57,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267254787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:57,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:57,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2024-11-19 01:48:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643297056] [2024-11-19 01:48:57,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:57,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 01:48:57,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 01:48:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2024-11-19 01:48:57,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:48:57,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 175 transitions, 2122 flow. Second operand has 27 states, 27 states have (on average 6.62962962962963) internal successors, (179), 27 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:57,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:57,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:48:57,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:59,345 INFO L124 PetriNetUnfolderBase]: 359/626 cut-off events. [2024-11-19 01:48:59,345 INFO L125 PetriNetUnfolderBase]: For 3863/3863 co-relation queries the response was YES. [2024-11-19 01:48:59,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 626 events. 359/626 cut-off events. For 3863/3863 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2573 event pairs, 7 based on Foata normal form. 1/623 useless extension candidates. Maximal degree in co-relation 4023. Up to 483 conditions per place. [2024-11-19 01:48:59,352 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 153 selfloop transitions, 50 changer transitions 4/210 dead transitions. [2024-11-19 01:48:59,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 210 transitions, 2645 flow [2024-11-19 01:48:59,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:48:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 01:48:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 177 transitions. [2024-11-19 01:48:59,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4425 [2024-11-19 01:48:59,354 INFO L175 Difference]: Start difference. First operand has 134 places, 175 transitions, 2122 flow. Second operand 20 states and 177 transitions. [2024-11-19 01:48:59,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 210 transitions, 2645 flow [2024-11-19 01:48:59,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 210 transitions, 2540 flow, removed 19 selfloop flow, removed 16 redundant places. [2024-11-19 01:48:59,372 INFO L231 Difference]: Finished difference. Result has 141 places, 178 transitions, 2176 flow [2024-11-19 01:48:59,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2176, PETRI_PLACES=141, PETRI_TRANSITIONS=178} [2024-11-19 01:48:59,372 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 120 predicate places. [2024-11-19 01:48:59,372 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 178 transitions, 2176 flow [2024-11-19 01:48:59,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.62962962962963) internal successors, (179), 27 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:59,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:59,373 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:59,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:59,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:59,573 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:59,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2104775722, now seen corresponding path program 15 times [2024-11-19 01:48:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:59,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631882235] [2024-11-19 01:48:59,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:48:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:59,628 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:48:59,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:01,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:01,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631882235] [2024-11-19 01:49:01,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631882235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:01,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597879561] [2024-11-19 01:49:01,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:01,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:01,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:01,090 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:49:01,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 01:49:01,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:49:01,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:01,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 01:49:01,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:01,693 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:49:01,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 146 [2024-11-19 01:49:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:01,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:02,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:49:02,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 959 treesize of output 445 [2024-11-19 01:49:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:49:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597879561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:07,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2024-11-19 01:49:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926927033] [2024-11-19 01:49:07,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:07,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 01:49:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 01:49:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2024-11-19 01:49:07,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:49:07,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 178 transitions, 2176 flow. Second operand has 26 states, 26 states have (on average 6.653846153846154) internal successors, (173), 26 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:07,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:07,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:49:07,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:10,980 INFO L124 PetriNetUnfolderBase]: 475/810 cut-off events. [2024-11-19 01:49:10,981 INFO L125 PetriNetUnfolderBase]: For 4838/4838 co-relation queries the response was YES. [2024-11-19 01:49:10,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5437 conditions, 810 events. 475/810 cut-off events. For 4838/4838 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3549 event pairs, 10 based on Foata normal form. 1/809 useless extension candidates. Maximal degree in co-relation 5372. Up to 497 conditions per place. [2024-11-19 01:49:10,990 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 156 selfloop transitions, 126 changer transitions 4/289 dead transitions. [2024-11-19 01:49:10,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 289 transitions, 3745 flow [2024-11-19 01:49:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 01:49:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 01:49:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 259 transitions. [2024-11-19 01:49:10,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44655172413793104 [2024-11-19 01:49:10,993 INFO L175 Difference]: Start difference. First operand has 141 places, 178 transitions, 2176 flow. Second operand 29 states and 259 transitions. [2024-11-19 01:49:10,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 289 transitions, 3745 flow [2024-11-19 01:49:11,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 289 transitions, 3672 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-11-19 01:49:11,021 INFO L231 Difference]: Finished difference. Result has 158 places, 245 transitions, 3350 flow [2024-11-19 01:49:11,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3350, PETRI_PLACES=158, PETRI_TRANSITIONS=245} [2024-11-19 01:49:11,022 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 137 predicate places. [2024-11-19 01:49:11,022 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 245 transitions, 3350 flow [2024-11-19 01:49:11,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.653846153846154) internal successors, (173), 26 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:11,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:11,023 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:11,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 01:49:11,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:11,224 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:49:11,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash 309272152, now seen corresponding path program 16 times [2024-11-19 01:49:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:11,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417684744] [2024-11-19 01:49:11,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:49:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:11,297 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:49:11,297 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:12,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417684744] [2024-11-19 01:49:12,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417684744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627465288] [2024-11-19 01:49:12,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:49:12,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:12,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:12,148 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:49:12,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 01:49:12,228 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:49:12,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:12,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 01:49:12,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:12,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:49:12,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 01:49:12,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:49:12,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 237 treesize of output 145 [2024-11-19 01:49:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:12,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:49:16,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627465288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:16,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:16,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 24 [2024-11-19 01:49:16,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321321639] [2024-11-19 01:49:16,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:16,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:49:16,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:16,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:49:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:49:16,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2024-11-19 01:49:16,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 245 transitions, 3350 flow. Second operand has 24 states, 24 states have (on average 6.791666666666667) internal successors, (163), 24 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:16,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:16,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2024-11-19 01:49:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:17,596 INFO L124 PetriNetUnfolderBase]: 495/840 cut-off events. [2024-11-19 01:49:17,597 INFO L125 PetriNetUnfolderBase]: For 5655/5655 co-relation queries the response was YES.