./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:34:39,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:34:39,889 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:34:39,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:34:39,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:34:39,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:34:39,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:34:39,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:34:39,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:34:39,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:34:39,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:34:39,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:34:39,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:34:39,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:34:39,935 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:34:39,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:34:39,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:34:39,936 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:34:39,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:34:39,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:34:39,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:34:39,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:34:39,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:34:39,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:34:39,938 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:34:39,938 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:34:39,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:34:39,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:34:39,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:34:39,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:34:39,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:34:39,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:34:39,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:34:39,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:34:39,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:34:39,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:34:39,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:34:39,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:34:39,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:34:39,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:34:39,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:34:39,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:34:39,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-11-20 09:34:40,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:34:40,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:34:40,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:34:40,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:34:40,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:34:40,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-11-20 09:34:41,647 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:34:41,843 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:34:41,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-11-20 09:34:41,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6ef2691/7acdaaa8d7084110aeabfa5f3e2c8d14/FLAG04f680e0b [2024-11-20 09:34:41,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6ef2691/7acdaaa8d7084110aeabfa5f3e2c8d14 [2024-11-20 09:34:41,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:34:41,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:34:41,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:34:41,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:34:41,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:34:41,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:41" (1/1) ... [2024-11-20 09:34:41,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e6bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:41, skipping insertion in model container [2024-11-20 09:34:41,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:41" (1/1) ... [2024-11-20 09:34:41,921 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:34:42,131 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2820,2833] [2024-11-20 09:34:42,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:34:42,151 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:34:42,171 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2820,2833] [2024-11-20 09:34:42,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:34:42,196 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:34:42,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42 WrapperNode [2024-11-20 09:34:42,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:34:42,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:34:42,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:34:42,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:34:42,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,212 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,247 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 274 [2024-11-20 09:34:42,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:34:42,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:34:42,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:34:42,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:34:42,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,265 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,280 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-20 09:34:42,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:34:42,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:34:42,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:34:42,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:34:42,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (1/1) ... [2024-11-20 09:34:42,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:34:42,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:42,348 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) [2024-11-20 09:34:42,350 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 [2024-11-20 09:34:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:34:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:34:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:34:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:34:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:34:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:34:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:34:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:34:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:34:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:34:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:34:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:34:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:34:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:34:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:34:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:34:42,392 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:34:42,491 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:34:42,492 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:34:42,975 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:34:42,976 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:34:43,256 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:34:43,257 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-20 09:34:43,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:43 BoogieIcfgContainer [2024-11-20 09:34:43,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:34:43,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:34:43,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:34:43,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:34:43,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:34:41" (1/3) ... [2024-11-20 09:34:43,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7307e349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:43, skipping insertion in model container [2024-11-20 09:34:43,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:42" (2/3) ... [2024-11-20 09:34:43,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7307e349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:43, skipping insertion in model container [2024-11-20 09:34:43,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:43" (3/3) ... [2024-11-20 09:34:43,267 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-11-20 09:34:43,283 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:34:43,283 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:34:43,283 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:34:43,391 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:34:43,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-20 09:34:43,460 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-20 09:34:43,460 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:34:43,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-20 09:34:43,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-20 09:34:43,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-20 09:34:43,474 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:34:43,479 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;@67924f9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:34:43,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:34:43,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:34:43,495 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-20 09:34:43,495 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:34:43,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:43,496 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:43,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:43,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1313884014, now seen corresponding path program 1 times [2024-11-20 09:34:43,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:43,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397587517] [2024-11-20 09:34:43,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:43,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:44,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:44,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397587517] [2024-11-20 09:34:44,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397587517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:44,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:44,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 09:34:44,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560808106] [2024-11-20 09:34:44,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:44,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:34:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:34:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:34:44,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:44,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:44,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:44,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:44,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:45,445 INFO L124 PetriNetUnfolderBase]: 2768/3758 cut-off events. [2024-11-20 09:34:45,447 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-20 09:34:45,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 3758 events. 2768/3758 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14868 event pairs, 244 based on Foata normal form. 1/2695 useless extension candidates. Maximal degree in co-relation 4518. Up to 1254 conditions per place. [2024-11-20 09:34:45,475 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 114 selfloop transitions, 16 changer transitions 1/132 dead transitions. [2024-11-20 09:34:45,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 132 transitions, 592 flow [2024-11-20 09:34:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:34:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:34:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-11-20 09:34:45,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-20 09:34:45,493 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 10 states and 172 transitions. [2024-11-20 09:34:45,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 132 transitions, 592 flow [2024-11-20 09:34:45,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 132 transitions, 548 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:34:45,508 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 178 flow [2024-11-20 09:34:45,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2024-11-20 09:34:45,514 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-20 09:34:45,514 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 178 flow [2024-11-20 09:34:45,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:45,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:45,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:45,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:34:45,516 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:45,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:45,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1734295646, now seen corresponding path program 2 times [2024-11-20 09:34:45,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:45,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778929841] [2024-11-20 09:34:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:45,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:46,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:46,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778929841] [2024-11-20 09:34:46,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778929841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:46,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:46,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 09:34:46,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41844009] [2024-11-20 09:34:46,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:46,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:34:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:46,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:34:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:34:46,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:46,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:46,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:46,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:46,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:46,729 INFO L124 PetriNetUnfolderBase]: 3138/4313 cut-off events. [2024-11-20 09:34:46,729 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-11-20 09:34:46,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9476 conditions, 4313 events. 3138/4313 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18237 event pairs, 304 based on Foata normal form. 1/3518 useless extension candidates. Maximal degree in co-relation 6533. Up to 1352 conditions per place. [2024-11-20 09:34:46,751 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 116 selfloop transitions, 18 changer transitions 1/136 dead transitions. [2024-11-20 09:34:46,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 136 transitions, 645 flow [2024-11-20 09:34:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:34:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:34:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-11-20 09:34:46,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-20 09:34:46,753 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 178 flow. Second operand 10 states and 174 transitions. [2024-11-20 09:34:46,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 136 transitions, 645 flow [2024-11-20 09:34:46,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 136 transitions, 639 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-20 09:34:46,758 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 242 flow [2024-11-20 09:34:46,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2024-11-20 09:34:46,759 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-11-20 09:34:46,759 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 242 flow [2024-11-20 09:34:46,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:46,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:46,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:46,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:34:46,760 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:46,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash 875880000, now seen corresponding path program 1 times [2024-11-20 09:34:46,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:46,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526370048] [2024-11-20 09:34:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:46,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:46,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526370048] [2024-11-20 09:34:46,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526370048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:46,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405019281] [2024-11-20 09:34:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:46,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:46,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:46,913 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) [2024-11-20 09:34:46,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:34:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:47,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:34:47,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:47,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:34:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:47,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405019281] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:47,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:34:47,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-20 09:34:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362252412] [2024-11-20 09:34:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:47,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:34:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:34:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:34:47,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:47,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-11-20 09:34:47,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:47,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:47,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:48,094 INFO L124 PetriNetUnfolderBase]: 5430/7452 cut-off events. [2024-11-20 09:34:48,095 INFO L125 PetriNetUnfolderBase]: For 2751/2751 co-relation queries the response was YES. [2024-11-20 09:34:48,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17374 conditions, 7452 events. 5430/7452 cut-off events. For 2751/2751 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 33951 event pairs, 2892 based on Foata normal form. 1/6109 useless extension candidates. Maximal degree in co-relation 14138. Up to 4306 conditions per place. [2024-11-20 09:34:48,132 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 133 selfloop transitions, 8 changer transitions 5/147 dead transitions. [2024-11-20 09:34:48,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 147 transitions, 811 flow [2024-11-20 09:34:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:34:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:34:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-11-20 09:34:48,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-11-20 09:34:48,135 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 242 flow. Second operand 7 states and 151 transitions. [2024-11-20 09:34:48,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 147 transitions, 811 flow [2024-11-20 09:34:48,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 147 transitions, 786 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-20 09:34:48,152 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 269 flow [2024-11-20 09:34:48,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-20 09:34:48,152 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-11-20 09:34:48,153 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 269 flow [2024-11-20 09:34:48,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-11-20 09:34:48,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:48,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:48,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:34:48,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:48,354 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:48,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:48,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1686032846, now seen corresponding path program 1 times [2024-11-20 09:34:48,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:48,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966922718] [2024-11-20 09:34:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:48,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:48,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966922718] [2024-11-20 09:34:48,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966922718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256496212] [2024-11-20 09:34:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:48,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:48,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:48,483 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) [2024-11-20 09:34:48,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:34:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:48,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:34:48,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:48,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:34:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:48,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256496212] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:48,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:34:48,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-20 09:34:48,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652913127] [2024-11-20 09:34:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:48,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:34:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:34:48,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-20 09:34:48,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:48,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:48,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:48,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:48,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:49,868 INFO L124 PetriNetUnfolderBase]: 6746/9268 cut-off events. [2024-11-20 09:34:49,869 INFO L125 PetriNetUnfolderBase]: For 3841/3841 co-relation queries the response was YES. [2024-11-20 09:34:49,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22428 conditions, 9268 events. 6746/9268 cut-off events. For 3841/3841 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 43798 event pairs, 3730 based on Foata normal form. 1/8020 useless extension candidates. Maximal degree in co-relation 19100. Up to 4460 conditions per place. [2024-11-20 09:34:49,921 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 127 selfloop transitions, 8 changer transitions 5/141 dead transitions. [2024-11-20 09:34:49,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 141 transitions, 792 flow [2024-11-20 09:34:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:34:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:34:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-20 09:34:49,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-11-20 09:34:49,923 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 269 flow. Second operand 6 states and 147 transitions. [2024-11-20 09:34:49,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 141 transitions, 792 flow [2024-11-20 09:34:49,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 141 transitions, 781 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 09:34:49,942 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 293 flow [2024-11-20 09:34:49,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-20 09:34:49,943 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2024-11-20 09:34:49,943 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 293 flow [2024-11-20 09:34:49,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:49,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:49,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:49,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:34:50,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-20 09:34:50,146 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:50,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash 862633564, now seen corresponding path program 1 times [2024-11-20 09:34:50,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:50,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823196685] [2024-11-20 09:34:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:50,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:50,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823196685] [2024-11-20 09:34:50,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823196685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:50,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:50,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:34:50,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886338737] [2024-11-20 09:34:50,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:50,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:34:50,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:34:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:34:50,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:50,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:50,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:50,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:50,978 INFO L124 PetriNetUnfolderBase]: 5027/7072 cut-off events. [2024-11-20 09:34:50,978 INFO L125 PetriNetUnfolderBase]: For 4094/4094 co-relation queries the response was YES. [2024-11-20 09:34:50,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17512 conditions, 7072 events. 5027/7072 cut-off events. For 4094/4094 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 33632 event pairs, 2062 based on Foata normal form. 0/6265 useless extension candidates. Maximal degree in co-relation 15527. Up to 3198 conditions per place. [2024-11-20 09:34:51,009 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 97 selfloop transitions, 8 changer transitions 0/106 dead transitions. [2024-11-20 09:34:51,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 106 transitions, 643 flow [2024-11-20 09:34:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-20 09:34:51,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-20 09:34:51,011 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 293 flow. Second operand 5 states and 103 transitions. [2024-11-20 09:34:51,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 106 transitions, 643 flow [2024-11-20 09:34:51,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 610 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-20 09:34:51,022 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 281 flow [2024-11-20 09:34:51,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-20 09:34:51,023 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2024-11-20 09:34:51,023 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 281 flow [2024-11-20 09:34:51,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:51,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:51,023 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:51,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:34:51,024 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:51,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:51,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1986635036, now seen corresponding path program 1 times [2024-11-20 09:34:51,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:51,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183691322] [2024-11-20 09:34:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:51,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:51,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183691322] [2024-11-20 09:34:51,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183691322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:51,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:51,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:34:51,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712349637] [2024-11-20 09:34:51,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:51,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:34:51,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:34:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:34:51,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:51,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 281 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:51,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:51,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:51,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:51,711 INFO L124 PetriNetUnfolderBase]: 3947/5694 cut-off events. [2024-11-20 09:34:51,711 INFO L125 PetriNetUnfolderBase]: For 3925/3925 co-relation queries the response was YES. [2024-11-20 09:34:51,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14231 conditions, 5694 events. 3947/5694 cut-off events. For 3925/3925 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 27139 event pairs, 1725 based on Foata normal form. 0/5156 useless extension candidates. Maximal degree in co-relation 13379. Up to 2622 conditions per place. [2024-11-20 09:34:51,740 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 88 selfloop transitions, 11 changer transitions 5/105 dead transitions. [2024-11-20 09:34:51,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 635 flow [2024-11-20 09:34:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:34:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:34:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-20 09:34:51,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-20 09:34:51,742 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 281 flow. Second operand 6 states and 106 transitions. [2024-11-20 09:34:51,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 635 flow [2024-11-20 09:34:51,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 624 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 09:34:51,753 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 271 flow [2024-11-20 09:34:51,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-20 09:34:51,754 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-11-20 09:34:51,754 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 271 flow [2024-11-20 09:34:51,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:51,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:51,755 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:51,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:34:51,755 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:51,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1157327458, now seen corresponding path program 1 times [2024-11-20 09:34:51,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:51,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086245612] [2024-11-20 09:34:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:52,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:52,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086245612] [2024-11-20 09:34:52,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086245612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424588339] [2024-11-20 09:34:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:52,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:52,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:52,072 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) [2024-11-20 09:34:52,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:34:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:52,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:34:52,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:52,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:34:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424588339] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:34:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2024-11-20 09:34:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405087930] [2024-11-20 09:34:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:52,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:34:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:34:52,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-20 09:34:52,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:52,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 271 flow. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2024-11-20 09:34:52,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:52,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:52,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:53,427 INFO L124 PetriNetUnfolderBase]: 3477/4992 cut-off events. [2024-11-20 09:34:53,428 INFO L125 PetriNetUnfolderBase]: For 3685/3685 co-relation queries the response was YES. [2024-11-20 09:34:53,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12844 conditions, 4992 events. 3477/4992 cut-off events. For 3685/3685 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23590 event pairs, 522 based on Foata normal form. 1/4619 useless extension candidates. Maximal degree in co-relation 12797. Up to 3740 conditions per place. [2024-11-20 09:34:53,456 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 98 selfloop transitions, 12 changer transitions 18/129 dead transitions. [2024-11-20 09:34:53,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 129 transitions, 785 flow [2024-11-20 09:34:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:34:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:34:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-20 09:34:53,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-11-20 09:34:53,458 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 271 flow. Second operand 10 states and 153 transitions. [2024-11-20 09:34:53,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 129 transitions, 785 flow [2024-11-20 09:34:53,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 757 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-20 09:34:53,468 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 300 flow [2024-11-20 09:34:53,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=300, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-11-20 09:34:53,469 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-11-20 09:34:53,469 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 300 flow [2024-11-20 09:34:53,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2024-11-20 09:34:53,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:53,471 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:53,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 09:34:53,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:53,672 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:53,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:53,672 INFO L85 PathProgramCache]: Analyzing trace with hash -254538266, now seen corresponding path program 2 times [2024-11-20 09:34:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:53,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907322889] [2024-11-20 09:34:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:53,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907322889] [2024-11-20 09:34:53,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907322889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852744727] [2024-11-20 09:34:53,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:34:53,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:53,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:53,940 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) [2024-11-20 09:34:53,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:34:54,037 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 09:34:54,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:34:54,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 09:34:54,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:34:54,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:34:54,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852744727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:54,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:34:54,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-11-20 09:34:54,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088889151] [2024-11-20 09:34:54,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:54,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:34:54,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:54,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:34:54,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:34:54,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:54,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2024-11-20 09:34:54,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:54,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:54,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:55,003 INFO L124 PetriNetUnfolderBase]: 3449/4988 cut-off events. [2024-11-20 09:34:55,003 INFO L125 PetriNetUnfolderBase]: For 5195/5195 co-relation queries the response was YES. [2024-11-20 09:34:55,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 4988 events. 3449/4988 cut-off events. For 5195/5195 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 23788 event pairs, 1220 based on Foata normal form. 1/4622 useless extension candidates. Maximal degree in co-relation 13091. Up to 3945 conditions per place. [2024-11-20 09:34:55,027 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 107 selfloop transitions, 21 changer transitions 8/137 dead transitions. [2024-11-20 09:34:55,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 865 flow [2024-11-20 09:34:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 09:34:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 09:34:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-11-20 09:34:55,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3704545454545455 [2024-11-20 09:34:55,029 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 300 flow. Second operand 11 states and 163 transitions. [2024-11-20 09:34:55,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 865 flow [2024-11-20 09:34:55,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 137 transitions, 817 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-20 09:34:55,040 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 455 flow [2024-11-20 09:34:55,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=455, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-11-20 09:34:55,041 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2024-11-20 09:34:55,041 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 455 flow [2024-11-20 09:34:55,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2024-11-20 09:34:55,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:55,042 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:55,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 09:34:55,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:55,246 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:55,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash 276219648, now seen corresponding path program 3 times [2024-11-20 09:34:55,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:55,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687429781] [2024-11-20 09:34:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:55,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:55,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687429781] [2024-11-20 09:34:55,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687429781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747588881] [2024-11-20 09:34:55,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:34:55,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:55,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:55,520 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) [2024-11-20 09:34:55,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:34:55,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-20 09:34:55,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:34:55,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:34:55,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:34:55,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:34:55,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747588881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:55,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:34:55,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-11-20 09:34:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178414836] [2024-11-20 09:34:55,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:55,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:34:55,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:34:55,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:34:55,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:55,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 455 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-11-20 09:34:55,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:55,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:55,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:56,438 INFO L124 PetriNetUnfolderBase]: 4350/6288 cut-off events. [2024-11-20 09:34:56,440 INFO L125 PetriNetUnfolderBase]: For 5929/5929 co-relation queries the response was YES. [2024-11-20 09:34:56,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16388 conditions, 6288 events. 4350/6288 cut-off events. For 5929/5929 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 31519 event pairs, 828 based on Foata normal form. 1/5781 useless extension candidates. Maximal degree in co-relation 15545. Up to 2597 conditions per place. [2024-11-20 09:34:56,471 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 120 selfloop transitions, 33 changer transitions 6/160 dead transitions. [2024-11-20 09:34:56,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 1056 flow [2024-11-20 09:34:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:34:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:34:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-11-20 09:34:56,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-20 09:34:56,477 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 455 flow. Second operand 10 states and 172 transitions. [2024-11-20 09:34:56,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 1056 flow [2024-11-20 09:34:56,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 160 transitions, 1028 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-20 09:34:56,514 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 582 flow [2024-11-20 09:34:56,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=582, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-11-20 09:34:56,515 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-11-20 09:34:56,516 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 582 flow [2024-11-20 09:34:56,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-11-20 09:34:56,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:56,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:56,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 09:34:56,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:56,721 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:56,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -620935228, now seen corresponding path program 4 times [2024-11-20 09:34:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542624289] [2024-11-20 09:34:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:56,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:56,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542624289] [2024-11-20 09:34:56,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542624289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:56,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476765391] [2024-11-20 09:34:56,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:34:56,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:56,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:56,950 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) [2024-11-20 09:34:56,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:34:57,033 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:34:57,033 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:34:57,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:34:57,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:34:57,089 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:34:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476765391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:34:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-11-20 09:34:57,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837777676] [2024-11-20 09:34:57,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:57,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:34:57,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:34:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-20 09:34:57,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:57,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 582 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:57,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:57,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:57,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:57,948 INFO L124 PetriNetUnfolderBase]: 7151/10187 cut-off events. [2024-11-20 09:34:57,948 INFO L125 PetriNetUnfolderBase]: For 12300/12300 co-relation queries the response was YES. [2024-11-20 09:34:57,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27275 conditions, 10187 events. 7151/10187 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 54001 event pairs, 740 based on Foata normal form. 2/9681 useless extension candidates. Maximal degree in co-relation 26390. Up to 4031 conditions per place. [2024-11-20 09:34:58,007 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 114 selfloop transitions, 42 changer transitions 1/158 dead transitions. [2024-11-20 09:34:58,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 158 transitions, 1242 flow [2024-11-20 09:34:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:34:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:34:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-20 09:34:58,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-20 09:34:58,010 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 582 flow. Second operand 6 states and 126 transitions. [2024-11-20 09:34:58,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 158 transitions, 1242 flow [2024-11-20 09:34:58,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 158 transitions, 1190 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-20 09:34:58,054 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 857 flow [2024-11-20 09:34:58,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2024-11-20 09:34:58,056 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2024-11-20 09:34:58,056 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 857 flow [2024-11-20 09:34:58,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:58,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:58,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:58,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 09:34:58,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:58,258 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:58,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:58,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1411683354, now seen corresponding path program 1 times [2024-11-20 09:34:58,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:58,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975119983] [2024-11-20 09:34:58,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:58,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:34:58,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975119983] [2024-11-20 09:34:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975119983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:58,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:58,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:34:58,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292833963] [2024-11-20 09:34:58,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:58,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:34:58,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:58,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:34:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:34:58,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:58,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 857 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:58,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:58,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:58,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:59,116 INFO L124 PetriNetUnfolderBase]: 5982/8573 cut-off events. [2024-11-20 09:34:59,116 INFO L125 PetriNetUnfolderBase]: For 18717/18717 co-relation queries the response was YES. [2024-11-20 09:34:59,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25216 conditions, 8573 events. 5982/8573 cut-off events. For 18717/18717 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 45135 event pairs, 3475 based on Foata normal form. 0/8258 useless extension candidates. Maximal degree in co-relation 24614. Up to 6344 conditions per place. [2024-11-20 09:34:59,156 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 67 selfloop transitions, 2 changer transitions 62/132 dead transitions. [2024-11-20 09:34:59,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 132 transitions, 1198 flow [2024-11-20 09:34:59,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:34:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:34:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-11-20 09:34:59,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-20 09:34:59,159 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 857 flow. Second operand 6 states and 105 transitions. [2024-11-20 09:34:59,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 132 transitions, 1198 flow [2024-11-20 09:34:59,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 1152 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:59,224 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 506 flow [2024-11-20 09:34:59,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2024-11-20 09:34:59,225 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 60 predicate places. [2024-11-20 09:34:59,225 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 506 flow [2024-11-20 09:34:59,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:59,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:59,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:59,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 09:34:59,226 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:59,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:59,226 INFO L85 PathProgramCache]: Analyzing trace with hash -341278882, now seen corresponding path program 1 times [2024-11-20 09:34:59,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665091009] [2024-11-20 09:34:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:59,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:34:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665091009] [2024-11-20 09:34:59,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665091009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:59,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:59,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:34:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325139500] [2024-11-20 09:34:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:59,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:34:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:34:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:34:59,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:34:59,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:59,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:59,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:34:59,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:59,692 INFO L124 PetriNetUnfolderBase]: 3539/4972 cut-off events. [2024-11-20 09:34:59,692 INFO L125 PetriNetUnfolderBase]: For 8274/8274 co-relation queries the response was YES. [2024-11-20 09:34:59,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14291 conditions, 4972 events. 3539/4972 cut-off events. For 8274/8274 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 22961 event pairs, 1737 based on Foata normal form. 154/5124 useless extension candidates. Maximal degree in co-relation 14259. Up to 3059 conditions per place. [2024-11-20 09:34:59,711 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 47 selfloop transitions, 2 changer transitions 52/102 dead transitions. [2024-11-20 09:34:59,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 795 flow [2024-11-20 09:34:59,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:34:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:34:59,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-11-20 09:34:59,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-11-20 09:34:59,712 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 506 flow. Second operand 6 states and 101 transitions. [2024-11-20 09:34:59,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 795 flow [2024-11-20 09:34:59,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 729 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-11-20 09:34:59,737 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 247 flow [2024-11-20 09:34:59,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2024-11-20 09:34:59,738 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-11-20 09:34:59,738 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 247 flow [2024-11-20 09:34:59,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:59,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:59,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:59,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 09:34:59,739 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:34:59,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1081268092, now seen corresponding path program 1 times [2024-11-20 09:34:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337492279] [2024-11-20 09:34:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:34:59,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:59,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337492279] [2024-11-20 09:34:59,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337492279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:59,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110763681] [2024-11-20 09:34:59,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:59,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:59,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:59,858 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) [2024-11-20 09:34:59,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 09:34:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:59,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:34:59,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:00,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:00,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110763681] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:00,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:35:00,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-20 09:35:00,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867769758] [2024-11-20 09:35:00,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:00,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:35:00,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:00,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:35:00,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:35:00,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:00,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-20 09:35:00,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:00,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:00,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:00,468 INFO L124 PetriNetUnfolderBase]: 3117/4283 cut-off events. [2024-11-20 09:35:00,468 INFO L125 PetriNetUnfolderBase]: For 4504/4504 co-relation queries the response was YES. [2024-11-20 09:35:00,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 4283 events. 3117/4283 cut-off events. For 4504/4504 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17894 event pairs, 1432 based on Foata normal form. 154/4205 useless extension candidates. Maximal degree in co-relation 11690. Up to 2238 conditions per place. [2024-11-20 09:35:00,485 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 69 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-11-20 09:35:00,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 531 flow [2024-11-20 09:35:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:35:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:35:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-11-20 09:35:00,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31785714285714284 [2024-11-20 09:35:00,487 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 247 flow. Second operand 7 states and 89 transitions. [2024-11-20 09:35:00,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 531 flow [2024-11-20 09:35:00,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 475 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-11-20 09:35:00,498 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 248 flow [2024-11-20 09:35:00,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-20 09:35:00,498 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-11-20 09:35:00,499 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 248 flow [2024-11-20 09:35:00,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-20 09:35:00,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:00,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:00,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 09:35:00,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:00,700 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:00,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash -57540264, now seen corresponding path program 1 times [2024-11-20 09:35:00,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802796951] [2024-11-20 09:35:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802796951] [2024-11-20 09:35:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802796951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:00,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:00,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:35:00,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650077481] [2024-11-20 09:35:00,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:00,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:35:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:00,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:35:00,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:35:00,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:00,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-20 09:35:00,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:00,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:00,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:01,141 INFO L124 PetriNetUnfolderBase]: 3117/4279 cut-off events. [2024-11-20 09:35:01,142 INFO L125 PetriNetUnfolderBase]: For 3122/3122 co-relation queries the response was YES. [2024-11-20 09:35:01,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11541 conditions, 4279 events. 3117/4279 cut-off events. For 3122/3122 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18360 event pairs, 1309 based on Foata normal form. 2/3856 useless extension candidates. Maximal degree in co-relation 11525. Up to 2752 conditions per place. [2024-11-20 09:35:01,151 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 67 selfloop transitions, 3 changer transitions 26/97 dead transitions. [2024-11-20 09:35:01,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 607 flow [2024-11-20 09:35:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:35:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:35:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-20 09:35:01,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-20 09:35:01,153 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 248 flow. Second operand 4 states and 90 transitions. [2024-11-20 09:35:01,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 607 flow [2024-11-20 09:35:01,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 594 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-20 09:35:01,158 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 225 flow [2024-11-20 09:35:01,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-11-20 09:35:01,159 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-20 09:35:01,159 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 225 flow [2024-11-20 09:35:01,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-20 09:35:01,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:01,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:01,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 09:35:01,160 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:01,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash -45934218, now seen corresponding path program 1 times [2024-11-20 09:35:01,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:01,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502675101] [2024-11-20 09:35:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:01,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502675101] [2024-11-20 09:35:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502675101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174720125] [2024-11-20 09:35:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:01,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:01,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:01,429 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) [2024-11-20 09:35:01,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 09:35:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:01,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 09:35:01,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:01,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174720125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:35:02,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:35:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-20 09:35:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182688238] [2024-11-20 09:35:02,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:35:02,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 09:35:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 09:35:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-20 09:35:02,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:02,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 225 flow. Second operand has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 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) [2024-11-20 09:35:02,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:02,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:02,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:02,807 INFO L124 PetriNetUnfolderBase]: 6522/8968 cut-off events. [2024-11-20 09:35:02,807 INFO L125 PetriNetUnfolderBase]: For 8064/8064 co-relation queries the response was YES. [2024-11-20 09:35:02,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24462 conditions, 8968 events. 6522/8968 cut-off events. For 8064/8064 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 43507 event pairs, 1463 based on Foata normal form. 1/8029 useless extension candidates. Maximal degree in co-relation 24445. Up to 3471 conditions per place. [2024-11-20 09:35:02,841 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 131 selfloop transitions, 22 changer transitions 1/155 dead transitions. [2024-11-20 09:35:02,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 155 transitions, 934 flow [2024-11-20 09:35:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 09:35:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 09:35:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-11-20 09:35:02,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-11-20 09:35:02,842 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 225 flow. Second operand 12 states and 184 transitions. [2024-11-20 09:35:02,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 155 transitions, 934 flow [2024-11-20 09:35:02,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 155 transitions, 904 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-20 09:35:02,857 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 410 flow [2024-11-20 09:35:02,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=410, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-11-20 09:35:02,857 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-11-20 09:35:02,857 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 410 flow [2024-11-20 09:35:02,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 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) [2024-11-20 09:35:02,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:02,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:02,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 09:35:03,059 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,SelfDestructingSolverStorable14 [2024-11-20 09:35:03,059 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:03,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1134680602, now seen corresponding path program 2 times [2024-11-20 09:35:03,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:03,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76926019] [2024-11-20 09:35:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:03,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:03,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:03,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76926019] [2024-11-20 09:35:03,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76926019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:03,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333237829] [2024-11-20 09:35:03,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:35:03,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:03,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:03,337 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) [2024-11-20 09:35:03,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 09:35:03,429 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 09:35:03,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:35:03,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:35:03,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:03,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:35:03,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333237829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:03,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:35:03,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-11-20 09:35:03,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798972324] [2024-11-20 09:35:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:03,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:03,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:03,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-20 09:35:03,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:03,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 410 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-11-20 09:35:03,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:03,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:03,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:04,236 INFO L124 PetriNetUnfolderBase]: 6522/8966 cut-off events. [2024-11-20 09:35:04,237 INFO L125 PetriNetUnfolderBase]: For 12064/12064 co-relation queries the response was YES. [2024-11-20 09:35:04,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25373 conditions, 8966 events. 6522/8966 cut-off events. For 12064/12064 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 43346 event pairs, 1563 based on Foata normal form. 1/8028 useless extension candidates. Maximal degree in co-relation 25352. Up to 3471 conditions per place. [2024-11-20 09:35:04,274 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 134 selfloop transitions, 20 changer transitions 1/156 dead transitions. [2024-11-20 09:35:04,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1047 flow [2024-11-20 09:35:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:35:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:35:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-11-20 09:35:04,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-11-20 09:35:04,276 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 410 flow. Second operand 10 states and 173 transitions. [2024-11-20 09:35:04,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1047 flow [2024-11-20 09:35:04,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 156 transitions, 1027 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-20 09:35:04,303 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 517 flow [2024-11-20 09:35:04,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-11-20 09:35:04,304 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-11-20 09:35:04,304 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 517 flow [2024-11-20 09:35:04,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-11-20 09:35:04,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:04,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:04,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 09:35:04,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 09:35:04,509 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:04,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:04,509 INFO L85 PathProgramCache]: Analyzing trace with hash -548762382, now seen corresponding path program 3 times [2024-11-20 09:35:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:04,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137421522] [2024-11-20 09:35:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:04,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:04,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137421522] [2024-11-20 09:35:04,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137421522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:04,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097532387] [2024-11-20 09:35:04,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:35:04,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:04,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:04,789 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) [2024-11-20 09:35:04,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 09:35:04,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-20 09:35:04,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:35:04,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:35:04,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:05,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:35:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097532387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:05,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:35:05,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-20 09:35:05,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725473643] [2024-11-20 09:35:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:05,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-20 09:35:05,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:05,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 517 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-11-20 09:35:05,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:05,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:05,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:05,803 INFO L124 PetriNetUnfolderBase]: 7121/9877 cut-off events. [2024-11-20 09:35:05,803 INFO L125 PetriNetUnfolderBase]: For 18631/18631 co-relation queries the response was YES. [2024-11-20 09:35:05,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28910 conditions, 9877 events. 7121/9877 cut-off events. For 18631/18631 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 49265 event pairs, 1821 based on Foata normal form. 1/8890 useless extension candidates. Maximal degree in co-relation 28886. Up to 3471 conditions per place. [2024-11-20 09:35:05,846 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 143 selfloop transitions, 26 changer transitions 1/171 dead transitions. [2024-11-20 09:35:05,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 171 transitions, 1261 flow [2024-11-20 09:35:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:35:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:35:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-11-20 09:35:05,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-11-20 09:35:05,848 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 517 flow. Second operand 10 states and 179 transitions. [2024-11-20 09:35:05,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 171 transitions, 1261 flow [2024-11-20 09:35:05,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 171 transitions, 1227 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-20 09:35:05,888 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 672 flow [2024-11-20 09:35:05,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=672, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-11-20 09:35:05,889 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-11-20 09:35:05,889 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 672 flow [2024-11-20 09:35:05,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-11-20 09:35:05,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:05,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:05,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 09:35:06,092 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,SelfDestructingSolverStorable16 [2024-11-20 09:35:06,093 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:06,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash 180881828, now seen corresponding path program 4 times [2024-11-20 09:35:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167459801] [2024-11-20 09:35:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167459801] [2024-11-20 09:35:06,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167459801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041442221] [2024-11-20 09:35:06,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:35:06,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:06,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:06,369 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) [2024-11-20 09:35:06,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 09:35:06,452 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:35:06,453 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:35:06,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:35:06,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:06,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:06,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041442221] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:06,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:35:06,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 19 [2024-11-20 09:35:06,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111601301] [2024-11-20 09:35:06,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:06,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:35:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:35:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-20 09:35:06,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:06,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 672 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:06,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:06,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:06,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:08,784 INFO L124 PetriNetUnfolderBase]: 15416/21930 cut-off events. [2024-11-20 09:35:08,784 INFO L125 PetriNetUnfolderBase]: For 44608/44608 co-relation queries the response was YES. [2024-11-20 09:35:08,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62170 conditions, 21930 events. 15416/21930 cut-off events. For 44608/44608 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 130311 event pairs, 1402 based on Foata normal form. 2/19390 useless extension candidates. Maximal degree in co-relation 62142. Up to 7202 conditions per place. [2024-11-20 09:35:08,877 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 182 selfloop transitions, 90 changer transitions 3/276 dead transitions. [2024-11-20 09:35:08,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 276 transitions, 2518 flow [2024-11-20 09:35:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 09:35:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 09:35:08,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-11-20 09:35:08,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49318181818181817 [2024-11-20 09:35:08,878 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 672 flow. Second operand 11 states and 217 transitions. [2024-11-20 09:35:08,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 276 transitions, 2518 flow [2024-11-20 09:35:08,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 276 transitions, 2436 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-11-20 09:35:08,923 INFO L231 Difference]: Finished difference. Result has 100 places, 154 transitions, 1821 flow [2024-11-20 09:35:08,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1821, PETRI_PLACES=100, PETRI_TRANSITIONS=154} [2024-11-20 09:35:08,923 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-11-20 09:35:08,923 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 154 transitions, 1821 flow [2024-11-20 09:35:08,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:08,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:08,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:08,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 09:35:09,124 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,SelfDestructingSolverStorable17 [2024-11-20 09:35:09,125 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:09,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash -259686146, now seen corresponding path program 5 times [2024-11-20 09:35:09,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:09,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854396492] [2024-11-20 09:35:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:09,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:09,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854396492] [2024-11-20 09:35:09,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854396492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:09,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448426058] [2024-11-20 09:35:09,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:35:09,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:09,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:09,523 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) [2024-11-20 09:35:09,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 09:35:09,609 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:35:09,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:35:09,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:35:09,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:09,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448426058] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:10,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:35:10,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 19 [2024-11-20 09:35:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298880140] [2024-11-20 09:35:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:10,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:35:10,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:35:10,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-20 09:35:10,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:10,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 154 transitions, 1821 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:10,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:10,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:10,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:13,787 INFO L124 PetriNetUnfolderBase]: 26875/38469 cut-off events. [2024-11-20 09:35:13,787 INFO L125 PetriNetUnfolderBase]: For 110566/110566 co-relation queries the response was YES. [2024-11-20 09:35:13,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127207 conditions, 38469 events. 26875/38469 cut-off events. For 110566/110566 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 246985 event pairs, 3441 based on Foata normal form. 4/36127 useless extension candidates. Maximal degree in co-relation 127172. Up to 16314 conditions per place. [2024-11-20 09:35:14,086 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 201 selfloop transitions, 205 changer transitions 8/415 dead transitions. [2024-11-20 09:35:14,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 415 transitions, 4817 flow [2024-11-20 09:35:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 09:35:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 09:35:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-11-20 09:35:14,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5068181818181818 [2024-11-20 09:35:14,088 INFO L175 Difference]: Start difference. First operand has 100 places, 154 transitions, 1821 flow. Second operand 11 states and 223 transitions. [2024-11-20 09:35:14,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 415 transitions, 4817 flow [2024-11-20 09:35:14,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 415 transitions, 4757 flow, removed 30 selfloop flow, removed 0 redundant places. [2024-11-20 09:35:14,345 INFO L231 Difference]: Finished difference. Result has 119 places, 274 transitions, 4093 flow [2024-11-20 09:35:14,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4093, PETRI_PLACES=119, PETRI_TRANSITIONS=274} [2024-11-20 09:35:14,346 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 82 predicate places. [2024-11-20 09:35:14,346 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 274 transitions, 4093 flow [2024-11-20 09:35:14,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:14,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:14,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:14,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 09:35:14,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:14,547 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:14,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1836223824, now seen corresponding path program 6 times [2024-11-20 09:35:14,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:14,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392872765] [2024-11-20 09:35:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:14,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:14,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:14,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392872765] [2024-11-20 09:35:14,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392872765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462531234] [2024-11-20 09:35:14,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:35:14,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:14,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:14,865 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) [2024-11-20 09:35:14,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 09:35:14,964 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-20 09:35:14,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:35:14,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:35:14,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:15,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:35:15,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462531234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:15,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:35:15,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-20 09:35:15,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037449891] [2024-11-20 09:35:15,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:15,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:15,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:15,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:15,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-20 09:35:15,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:15,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 274 transitions, 4093 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-11-20 09:35:15,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:15,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:15,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:20,047 INFO L124 PetriNetUnfolderBase]: 28139/40216 cut-off events. [2024-11-20 09:35:20,048 INFO L125 PetriNetUnfolderBase]: For 179548/179548 co-relation queries the response was YES. [2024-11-20 09:35:20,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156783 conditions, 40216 events. 28139/40216 cut-off events. For 179548/179548 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 259233 event pairs, 8220 based on Foata normal form. 6/40221 useless extension candidates. Maximal degree in co-relation 156739. Up to 15519 conditions per place. [2024-11-20 09:35:20,452 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 346 selfloop transitions, 123 changer transitions 2/472 dead transitions. [2024-11-20 09:35:20,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 472 transitions, 6725 flow [2024-11-20 09:35:20,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:35:20,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:35:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-11-20 09:35:20,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-11-20 09:35:20,453 INFO L175 Difference]: Start difference. First operand has 119 places, 274 transitions, 4093 flow. Second operand 10 states and 176 transitions. [2024-11-20 09:35:20,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 472 transitions, 6725 flow [2024-11-20 09:35:21,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 472 transitions, 6648 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-11-20 09:35:21,409 INFO L231 Difference]: Finished difference. Result has 130 places, 297 transitions, 4838 flow [2024-11-20 09:35:21,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4838, PETRI_PLACES=130, PETRI_TRANSITIONS=297} [2024-11-20 09:35:21,410 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 93 predicate places. [2024-11-20 09:35:21,410 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 297 transitions, 4838 flow [2024-11-20 09:35:21,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-11-20 09:35:21,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:21,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:21,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 09:35:21,610 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,SelfDestructingSolverStorable19 [2024-11-20 09:35:21,611 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:21,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:21,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2012363864, now seen corresponding path program 7 times [2024-11-20 09:35:21,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:21,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958333469] [2024-11-20 09:35:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:21,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:21,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958333469] [2024-11-20 09:35:21,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958333469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590218692] [2024-11-20 09:35:21,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 09:35:21,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:21,866 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) [2024-11-20 09:35:21,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 09:35:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:21,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 09:35:21,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:22,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:22,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590218692] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:22,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:35:22,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 21 [2024-11-20 09:35:22,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290604305] [2024-11-20 09:35:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:22,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 09:35:22,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:22,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 09:35:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-20 09:35:22,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:22,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 297 transitions, 4838 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:22,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:22,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:22,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:27,411 INFO L124 PetriNetUnfolderBase]: 28139/40208 cut-off events. [2024-11-20 09:35:27,411 INFO L125 PetriNetUnfolderBase]: For 208384/208384 co-relation queries the response was YES. [2024-11-20 09:35:27,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160202 conditions, 40208 events. 28139/40208 cut-off events. For 208384/208384 co-relation queries the response was YES. Maximal size of possible extension queue 1631. Compared 258522 event pairs, 7261 based on Foata normal form. 4/40211 useless extension candidates. Maximal degree in co-relation 160154. Up to 15457 conditions per place. [2024-11-20 09:35:28,016 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 349 selfloop transitions, 140 changer transitions 2/492 dead transitions. [2024-11-20 09:35:28,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 492 transitions, 7373 flow [2024-11-20 09:35:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 09:35:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 09:35:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-11-20 09:35:28,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-11-20 09:35:28,018 INFO L175 Difference]: Start difference. First operand has 130 places, 297 transitions, 4838 flow. Second operand 11 states and 185 transitions. [2024-11-20 09:35:28,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 492 transitions, 7373 flow [2024-11-20 09:35:29,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 492 transitions, 7311 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-11-20 09:35:29,214 INFO L231 Difference]: Finished difference. Result has 140 places, 335 transitions, 5952 flow [2024-11-20 09:35:29,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4780, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5952, PETRI_PLACES=140, PETRI_TRANSITIONS=335} [2024-11-20 09:35:29,214 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 103 predicate places. [2024-11-20 09:35:29,214 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 335 transitions, 5952 flow [2024-11-20 09:35:29,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:29,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:29,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:29,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 09:35:29,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:29,415 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:29,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1767018374, now seen corresponding path program 1 times [2024-11-20 09:35:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:29,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001626535] [2024-11-20 09:35:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:29,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:29,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:29,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:29,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001626535] [2024-11-20 09:35:29,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001626535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:29,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448416985] [2024-11-20 09:35:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:29,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:29,596 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) [2024-11-20 09:35:29,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 09:35:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:29,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:35:29,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:29,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:29,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448416985] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:29,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:35:29,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-20 09:35:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164695141] [2024-11-20 09:35:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:29,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:35:29,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:35:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:35:29,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:29,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 335 transitions, 5952 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-20 09:35:29,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:29,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:29,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:34,505 INFO L124 PetriNetUnfolderBase]: 24894/35427 cut-off events. [2024-11-20 09:35:34,505 INFO L125 PetriNetUnfolderBase]: For 228797/228797 co-relation queries the response was YES. [2024-11-20 09:35:34,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148409 conditions, 35427 events. 24894/35427 cut-off events. For 228797/228797 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 225052 event pairs, 12094 based on Foata normal form. 450/35876 useless extension candidates. Maximal degree in co-relation 148357. Up to 18696 conditions per place. [2024-11-20 09:35:34,798 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 450 selfloop transitions, 26 changer transitions 0/477 dead transitions. [2024-11-20 09:35:34,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 477 transitions, 8306 flow [2024-11-20 09:35:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:35:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:35:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-11-20 09:35:34,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-20 09:35:34,799 INFO L175 Difference]: Start difference. First operand has 140 places, 335 transitions, 5952 flow. Second operand 8 states and 136 transitions. [2024-11-20 09:35:34,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 477 transitions, 8306 flow [2024-11-20 09:35:35,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 477 transitions, 8111 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-11-20 09:35:35,760 INFO L231 Difference]: Finished difference. Result has 143 places, 321 transitions, 5581 flow [2024-11-20 09:35:35,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5469, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5581, PETRI_PLACES=143, PETRI_TRANSITIONS=321} [2024-11-20 09:35:35,760 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 106 predicate places. [2024-11-20 09:35:35,760 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 321 transitions, 5581 flow [2024-11-20 09:35:35,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-20 09:35:35,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:35,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:35,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 09:35:35,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:35,961 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:35,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash 756728208, now seen corresponding path program 1 times [2024-11-20 09:35:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:35,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183117541] [2024-11-20 09:35:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:35,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:36,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:36,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183117541] [2024-11-20 09:35:36,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183117541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:36,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:36,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527705806] [2024-11-20 09:35:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:36,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:36,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:36,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 321 transitions, 5581 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:36,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:36,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:36,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:39,027 INFO L124 PetriNetUnfolderBase]: 14583/21258 cut-off events. [2024-11-20 09:35:39,027 INFO L125 PetriNetUnfolderBase]: For 133460/133460 co-relation queries the response was YES. [2024-11-20 09:35:39,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88357 conditions, 21258 events. 14583/21258 cut-off events. For 133460/133460 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 130880 event pairs, 7112 based on Foata normal form. 781/22038 useless extension candidates. Maximal degree in co-relation 88304. Up to 10769 conditions per place. [2024-11-20 09:35:39,195 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 257 selfloop transitions, 20 changer transitions 3/281 dead transitions. [2024-11-20 09:35:39,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 281 transitions, 4616 flow [2024-11-20 09:35:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:35:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:35:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-11-20 09:35:39,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-20 09:35:39,196 INFO L175 Difference]: Start difference. First operand has 143 places, 321 transitions, 5581 flow. Second operand 5 states and 96 transitions. [2024-11-20 09:35:39,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 281 transitions, 4616 flow [2024-11-20 09:35:39,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 281 transitions, 4459 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-11-20 09:35:39,812 INFO L231 Difference]: Finished difference. Result has 137 places, 234 transitions, 3674 flow [2024-11-20 09:35:39,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3674, PETRI_PLACES=137, PETRI_TRANSITIONS=234} [2024-11-20 09:35:39,813 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 100 predicate places. [2024-11-20 09:35:39,813 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 234 transitions, 3674 flow [2024-11-20 09:35:39,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:39,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:39,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:39,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 09:35:39,813 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:39,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash 717504228, now seen corresponding path program 1 times [2024-11-20 09:35:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283680470] [2024-11-20 09:35:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:39,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:39,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283680470] [2024-11-20 09:35:39,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283680470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:39,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:39,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799040144] [2024-11-20 09:35:39,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:39,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:39,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:39,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 234 transitions, 3674 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:39,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:39,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:39,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:41,645 INFO L124 PetriNetUnfolderBase]: 10164/14894 cut-off events. [2024-11-20 09:35:41,645 INFO L125 PetriNetUnfolderBase]: For 84780/84780 co-relation queries the response was YES. [2024-11-20 09:35:41,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60168 conditions, 14894 events. 10164/14894 cut-off events. For 84780/84780 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 86164 event pairs, 5637 based on Foata normal form. 404/15297 useless extension candidates. Maximal degree in co-relation 60118. Up to 10769 conditions per place. [2024-11-20 09:35:41,729 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 126 selfloop transitions, 2 changer transitions 74/203 dead transitions. [2024-11-20 09:35:41,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 203 transitions, 2886 flow [2024-11-20 09:35:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:35:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:35:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-20 09:35:41,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-11-20 09:35:41,730 INFO L175 Difference]: Start difference. First operand has 137 places, 234 transitions, 3674 flow. Second operand 5 states and 88 transitions. [2024-11-20 09:35:41,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 203 transitions, 2886 flow [2024-11-20 09:35:42,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 203 transitions, 2648 flow, removed 58 selfloop flow, removed 11 redundant places. [2024-11-20 09:35:42,054 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 1359 flow [2024-11-20 09:35:42,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1359, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-11-20 09:35:42,055 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 94 predicate places. [2024-11-20 09:35:42,055 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 1359 flow [2024-11-20 09:35:42,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:42,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:42,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:42,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 09:35:42,055 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:42,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -449975284, now seen corresponding path program 1 times [2024-11-20 09:35:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406537843] [2024-11-20 09:35:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:42,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:42,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406537843] [2024-11-20 09:35:42,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406537843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:42,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537643259] [2024-11-20 09:35:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:42,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:42,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:42,198 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) [2024-11-20 09:35:42,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 09:35:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:42,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:35:42,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:42,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:42,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537643259] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:42,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:35:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2024-11-20 09:35:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460622023] [2024-11-20 09:35:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:42,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:35:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:35:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:35:42,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:42,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 1359 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:42,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:42,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:42,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:43,496 INFO L124 PetriNetUnfolderBase]: 7447/10549 cut-off events. [2024-11-20 09:35:43,496 INFO L125 PetriNetUnfolderBase]: For 46321/46321 co-relation queries the response was YES. [2024-11-20 09:35:43,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43175 conditions, 10549 events. 7447/10549 cut-off events. For 46321/46321 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 53574 event pairs, 2757 based on Foata normal form. 479/11027 useless extension candidates. Maximal degree in co-relation 43130. Up to 5319 conditions per place. [2024-11-20 09:35:43,575 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 134 selfloop transitions, 25 changer transitions 0/160 dead transitions. [2024-11-20 09:35:43,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 160 transitions, 1962 flow [2024-11-20 09:35:43,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:35:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:35:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-20 09:35:43,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29642857142857143 [2024-11-20 09:35:43,576 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 1359 flow. Second operand 7 states and 83 transitions. [2024-11-20 09:35:43,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 160 transitions, 1962 flow [2024-11-20 09:35:43,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 160 transitions, 1784 flow, removed 74 selfloop flow, removed 16 redundant places. [2024-11-20 09:35:43,962 INFO L231 Difference]: Finished difference. Result has 95 places, 130 transitions, 1328 flow [2024-11-20 09:35:43,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1328, PETRI_PLACES=95, PETRI_TRANSITIONS=130} [2024-11-20 09:35:43,962 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 58 predicate places. [2024-11-20 09:35:43,962 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 130 transitions, 1328 flow [2024-11-20 09:35:43,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:43,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:43,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:43,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-20 09:35:44,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-20 09:35:44,163 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:44,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash 246087176, now seen corresponding path program 1 times [2024-11-20 09:35:44,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:44,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372357917] [2024-11-20 09:35:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:35:45,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:45,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372357917] [2024-11-20 09:35:45,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372357917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:45,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813523353] [2024-11-20 09:35:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:45,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:45,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:45,444 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) [2024-11-20 09:35:45,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 09:35:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:45,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 09:35:45,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:45,867 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-11-20 09:35:45,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 36 [2024-11-20 09:35:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:45,903 INFO L311 TraceCheckSpWp]: Computing backward predicates...