./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-cond-2.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 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:51:36,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:51:36,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:51:36,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:51:36,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:51:36,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:51:36,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:51:36,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:51:36,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:51:36,204 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:51:36,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:51:36,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:51:36,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:51:36,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:51:36,206 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:51:36,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:51:36,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:51:36,207 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:51:36,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:51:36,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:51:36,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:51:36,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:51:36,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:51:36,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:51:36,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:51:36,210 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:51:36,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:51:36,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:51:36,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:51:36,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:51:36,214 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:51:36,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:51:36,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:51:36,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:51:36,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:51:36,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:51:36,216 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:51:36,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:51:36,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:51:36,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:51:36,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:51:36,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:51:36,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b [2024-11-09 02:51:36,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:51:36,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:51:36,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:51:36,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:51:36,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:51:36,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-11-09 02:51:37,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:51:38,056 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:51:38,057 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-11-09 02:51:38,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eee86534/2c6d35f642ee4e0091d2b3c6062ceff0/FLAGd2befd4cf [2024-11-09 02:51:38,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eee86534/2c6d35f642ee4e0091d2b3c6062ceff0 [2024-11-09 02:51:38,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:51:38,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:51:38,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:51:38,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:51:38,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:51:38,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c356433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38, skipping insertion in model container [2024-11-09 02:51:38,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,116 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:51:38,318 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/unroll-cond-2.wvr.c[2500,2513] [2024-11-09 02:51:38,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:51:38,342 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:51:38,368 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/unroll-cond-2.wvr.c[2500,2513] [2024-11-09 02:51:38,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:51:38,392 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:51:38,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38 WrapperNode [2024-11-09 02:51:38,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:51:38,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:51:38,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:51:38,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:51:38,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,429 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 134 [2024-11-09 02:51:38,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:51:38,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:51:38,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:51:38,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:51:38,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,460 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 02:51:38,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:51:38,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:51:38,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:51:38,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:51:38,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (1/1) ... [2024-11-09 02:51:38,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:51:38,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:38,524 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) [2024-11-09 02:51:38,529 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 [2024-11-09 02:51:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:51:38,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:51:38,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:51:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:51:38,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:51:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:51:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:51:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:51:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:51:38,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:51:38,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:51:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:51:38,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:51:38,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:51:38,582 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:51:38,691 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:51:38,692 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:51:38,995 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:51:38,995 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:51:39,247 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:51:39,247 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 02:51:39,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:51:39 BoogieIcfgContainer [2024-11-09 02:51:39,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:51:39,251 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:51:39,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:51:39,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:51:39,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:51:38" (1/3) ... [2024-11-09 02:51:39,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17021799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:51:39, skipping insertion in model container [2024-11-09 02:51:39,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:38" (2/3) ... [2024-11-09 02:51:39,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17021799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:51:39, skipping insertion in model container [2024-11-09 02:51:39,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:51:39" (3/3) ... [2024-11-09 02:51:39,260 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2024-11-09 02:51:39,275 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:51:39,276 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:51:39,276 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:51:39,324 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:51:39,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 54 flow [2024-11-09 02:51:39,395 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2024-11-09 02:51:39,395 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:51:39,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 3/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-09 02:51:39,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 54 flow [2024-11-09 02:51:39,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 46 flow [2024-11-09 02:51:39,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:51:39,424 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;@b59fcfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:51:39,424 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:51:39,432 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:51:39,432 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-11-09 02:51:39,432 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:51:39,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:39,433 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:39,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:39,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1382470306, now seen corresponding path program 1 times [2024-11-09 02:51:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:39,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145788763] [2024-11-09 02:51:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:39,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145788763] [2024-11-09 02:51:39,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145788763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:39,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:39,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:51:39,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001186702] [2024-11-09 02:51:39,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:39,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:51:39,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:39,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:51:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:51:39,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:39,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-09 02:51:39,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:39,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:39,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:40,004 INFO L124 PetriNetUnfolderBase]: 38/71 cut-off events. [2024-11-09 02:51:40,006 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-09 02:51:40,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 71 events. 38/71 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 22 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 120. Up to 70 conditions per place. [2024-11-09 02:51:40,010 INFO L140 encePairwiseOnDemand]: 17/20 looper letters, 15 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2024-11-09 02:51:40,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 82 flow [2024-11-09 02:51:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:51:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:51:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2024-11-09 02:51:40,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-09 02:51:40,026 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 27 transitions. [2024-11-09 02:51:40,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 82 flow [2024-11-09 02:51:40,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:40,031 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2024-11-09 02:51:40,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2024-11-09 02:51:40,039 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2024-11-09 02:51:40,039 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2024-11-09 02:51:40,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-09 02:51:40,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:40,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:40,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:51:40,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:40,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1898578683, now seen corresponding path program 1 times [2024-11-09 02:51:40,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:40,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971775014] [2024-11-09 02:51:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:40,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:40,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:40,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971775014] [2024-11-09 02:51:40,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971775014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:40,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:40,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:40,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592161298] [2024-11-09 02:51:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:40,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:51:40,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:40,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:40,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:40,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:40,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:40,545 INFO L124 PetriNetUnfolderBase]: 67/123 cut-off events. [2024-11-09 02:51:40,546 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:51:40,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 123 events. 67/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 328 event pairs, 2 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 249. Up to 77 conditions per place. [2024-11-09 02:51:40,548 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 30 selfloop transitions, 11 changer transitions 2/44 dead transitions. [2024-11-09 02:51:40,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 44 transitions, 194 flow [2024-11-09 02:51:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-11-09 02:51:40,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-09 02:51:40,550 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 6 states and 62 transitions. [2024-11-09 02:51:40,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 44 transitions, 194 flow [2024-11-09 02:51:40,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 44 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:51:40,551 INFO L231 Difference]: Finished difference. Result has 27 places, 28 transitions, 114 flow [2024-11-09 02:51:40,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=27, PETRI_TRANSITIONS=28} [2024-11-09 02:51:40,553 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 6 predicate places. [2024-11-09 02:51:40,553 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 28 transitions, 114 flow [2024-11-09 02:51:40,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:40,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:40,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:40,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:51:40,554 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:40,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1602650249, now seen corresponding path program 2 times [2024-11-09 02:51:40,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:40,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743213788] [2024-11-09 02:51:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:40,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:40,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743213788] [2024-11-09 02:51:40,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743213788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:40,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:40,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:40,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100394498] [2024-11-09 02:51:40,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:40,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:40,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:51:40,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:40,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:40,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:40,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:40,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:40,902 INFO L124 PetriNetUnfolderBase]: 67/125 cut-off events. [2024-11-09 02:51:40,903 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-09 02:51:40,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 125 events. 67/125 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 328 event pairs, 0 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 362. Up to 77 conditions per place. [2024-11-09 02:51:40,906 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 29 selfloop transitions, 15 changer transitions 2/47 dead transitions. [2024-11-09 02:51:40,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 268 flow [2024-11-09 02:51:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:51:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:51:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-11-09 02:51:40,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-11-09 02:51:40,915 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 114 flow. Second operand 7 states and 64 transitions. [2024-11-09 02:51:40,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 268 flow [2024-11-09 02:51:40,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 260 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-09 02:51:40,918 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 173 flow [2024-11-09 02:51:40,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-09 02:51:40,920 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 14 predicate places. [2024-11-09 02:51:40,921 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 173 flow [2024-11-09 02:51:40,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:40,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:40,921 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:40,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:51:40,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:40,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1602055603, now seen corresponding path program 3 times [2024-11-09 02:51:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:40,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258079489] [2024-11-09 02:51:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:40,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:41,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:41,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258079489] [2024-11-09 02:51:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258079489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:41,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:41,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520695107] [2024-11-09 02:51:41,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:41,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:51:41,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:41,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:41,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:41,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:41,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:41,295 INFO L124 PetriNetUnfolderBase]: 83/158 cut-off events. [2024-11-09 02:51:41,298 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-11-09 02:51:41,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 158 events. 83/158 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 452 event pairs, 6 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 520. Up to 58 conditions per place. [2024-11-09 02:51:41,301 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 35 selfloop transitions, 19 changer transitions 2/57 dead transitions. [2024-11-09 02:51:41,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 368 flow [2024-11-09 02:51:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:51:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:51:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-11-09 02:51:41,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-09 02:51:41,305 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 173 flow. Second operand 8 states and 76 transitions. [2024-11-09 02:51:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 368 flow [2024-11-09 02:51:41,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 341 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 02:51:41,311 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 232 flow [2024-11-09 02:51:41,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-09 02:51:41,312 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2024-11-09 02:51:41,313 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 232 flow [2024-11-09 02:51:41,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:41,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:41,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:41,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:51:41,314 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:41,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1373918319, now seen corresponding path program 1 times [2024-11-09 02:51:41,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:41,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791979472] [2024-11-09 02:51:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:41,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:41,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:41,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791979472] [2024-11-09 02:51:41,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791979472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:41,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026697382] [2024-11-09 02:51:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:41,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:41,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:41,484 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) [2024-11-09 02:51:41,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:51:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:41,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:51:41,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:41,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:51:41,996 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 02:51:41,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 17 [2024-11-09 02:51:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:42,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:42,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-09 02:51:42,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:42,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 129 [2024-11-09 02:51:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:43,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026697382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:43,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:43,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 22 [2024-11-09 02:51:43,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569465192] [2024-11-09 02:51:43,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:43,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 02:51:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 02:51:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-11-09 02:51:43,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:43,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 232 flow. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 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) [2024-11-09 02:51:43,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:43,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:43,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:44,537 INFO L124 PetriNetUnfolderBase]: 273/493 cut-off events. [2024-11-09 02:51:44,537 INFO L125 PetriNetUnfolderBase]: For 716/716 co-relation queries the response was YES. [2024-11-09 02:51:44,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 493 events. 273/493 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1979 event pairs, 26 based on Foata normal form. 13/504 useless extension candidates. Maximal degree in co-relation 1213. Up to 171 conditions per place. [2024-11-09 02:51:44,547 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 71 selfloop transitions, 41 changer transitions 54/167 dead transitions. [2024-11-09 02:51:44,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 167 transitions, 1184 flow [2024-11-09 02:51:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 02:51:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 02:51:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 239 transitions. [2024-11-09 02:51:44,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4425925925925926 [2024-11-09 02:51:44,552 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 232 flow. Second operand 27 states and 239 transitions. [2024-11-09 02:51:44,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 167 transitions, 1184 flow [2024-11-09 02:51:44,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 167 transitions, 1129 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-09 02:51:44,566 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 496 flow [2024-11-09 02:51:44,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=496, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-11-09 02:51:44,569 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 56 predicate places. [2024-11-09 02:51:44,570 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 496 flow [2024-11-09 02:51:44,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 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) [2024-11-09 02:51:44,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:44,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:44,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:44,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:44,772 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:44,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:44,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1621282384, now seen corresponding path program 1 times [2024-11-09 02:51:44,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:44,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647115559] [2024-11-09 02:51:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:44,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:45,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:45,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647115559] [2024-11-09 02:51:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647115559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:45,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314291521] [2024-11-09 02:51:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:45,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:45,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:45,086 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) [2024-11-09 02:51:45,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:51:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:45,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:51:45,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:45,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:51:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:45,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:45,473 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 02:51:45,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2024-11-09 02:51:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:45,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314291521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:45,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:45,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-09 02:51:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102583977] [2024-11-09 02:51:45,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:45,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:51:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:51:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:51:45,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:45,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 496 flow. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 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) [2024-11-09 02:51:45,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:45,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:45,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:45,807 INFO L124 PetriNetUnfolderBase]: 217/389 cut-off events. [2024-11-09 02:51:45,807 INFO L125 PetriNetUnfolderBase]: For 1487/1487 co-relation queries the response was YES. [2024-11-09 02:51:45,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 389 events. 217/389 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1439 event pairs, 9 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1848. Up to 236 conditions per place. [2024-11-09 02:51:45,813 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 59 selfloop transitions, 35 changer transitions 3/98 dead transitions. [2024-11-09 02:51:45,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 916 flow [2024-11-09 02:51:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:51:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:51:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-11-09 02:51:45,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-09 02:51:45,815 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 496 flow. Second operand 10 states and 94 transitions. [2024-11-09 02:51:45,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 916 flow [2024-11-09 02:51:45,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 795 flow, removed 47 selfloop flow, removed 12 redundant places. [2024-11-09 02:51:45,826 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 590 flow [2024-11-09 02:51:45,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=590, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-11-09 02:51:45,827 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 47 predicate places. [2024-11-09 02:51:45,828 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 590 flow [2024-11-09 02:51:45,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 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) [2024-11-09 02:51:45,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:45,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:45,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:51:46,032 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,SelfDestructingSolverStorable5 [2024-11-09 02:51:46,033 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:46,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:46,034 INFO L85 PathProgramCache]: Analyzing trace with hash 948205454, now seen corresponding path program 2 times [2024-11-09 02:51:46,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:46,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819720421] [2024-11-09 02:51:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:46,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:46,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:46,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819720421] [2024-11-09 02:51:46,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819720421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:46,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566497732] [2024-11-09 02:51:46,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:46,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:46,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:46,351 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) [2024-11-09 02:51:46,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:51:46,445 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:46,446 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:46,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 02:51:46,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:46,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:51:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:46,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:46,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:46,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 33 [2024-11-09 02:51:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:46,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566497732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:46,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:46,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2024-11-09 02:51:46,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768594963] [2024-11-09 02:51:46,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:46,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:51:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:46,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:51:46,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:51:46,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:46,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 590 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:46,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:46,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:47,141 INFO L124 PetriNetUnfolderBase]: 257/455 cut-off events. [2024-11-09 02:51:47,141 INFO L125 PetriNetUnfolderBase]: For 1502/1502 co-relation queries the response was YES. [2024-11-09 02:51:47,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 455 events. 257/455 cut-off events. For 1502/1502 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1761 event pairs, 25 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2148. Up to 350 conditions per place. [2024-11-09 02:51:47,146 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 66 selfloop transitions, 39 changer transitions 3/109 dead transitions. [2024-11-09 02:51:47,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 1045 flow [2024-11-09 02:51:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:51:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:51:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-11-09 02:51:47,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-11-09 02:51:47,149 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 590 flow. Second operand 11 states and 94 transitions. [2024-11-09 02:51:47,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 1045 flow [2024-11-09 02:51:47,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 977 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-11-09 02:51:47,159 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 803 flow [2024-11-09 02:51:47,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=803, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2024-11-09 02:51:47,160 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 57 predicate places. [2024-11-09 02:51:47,163 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 803 flow [2024-11-09 02:51:47,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:47,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:47,163 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:47,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:51:47,367 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 [2024-11-09 02:51:47,368 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:47,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 167384518, now seen corresponding path program 3 times [2024-11-09 02:51:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:47,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148630720] [2024-11-09 02:51:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:47,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:47,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148630720] [2024-11-09 02:51:47,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148630720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:47,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835443322] [2024-11-09 02:51:47,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:51:47,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:47,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:47,645 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) [2024-11-09 02:51:47,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:51:47,719 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:51:47,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:47,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 02:51:47,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:47,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:51:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:47,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:47,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:47,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 69 [2024-11-09 02:51:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:48,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835443322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:48,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:48,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2024-11-09 02:51:48,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440163352] [2024-11-09 02:51:48,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:48,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:51:48,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:48,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:51:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:51:48,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:48,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 803 flow. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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) [2024-11-09 02:51:48,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:48,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:48,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:48,483 INFO L124 PetriNetUnfolderBase]: 271/513 cut-off events. [2024-11-09 02:51:48,484 INFO L125 PetriNetUnfolderBase]: For 1632/1632 co-relation queries the response was YES. [2024-11-09 02:51:48,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 513 events. 271/513 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2244 event pairs, 0 based on Foata normal form. 1/514 useless extension candidates. Maximal degree in co-relation 2351. Up to 273 conditions per place. [2024-11-09 02:51:48,488 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 74 selfloop transitions, 56 changer transitions 8/139 dead transitions. [2024-11-09 02:51:48,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 1386 flow [2024-11-09 02:51:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:51:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:51:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 110 transitions. [2024-11-09 02:51:48,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-09 02:51:48,490 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 803 flow. Second operand 14 states and 110 transitions. [2024-11-09 02:51:48,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 1386 flow [2024-11-09 02:51:48,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 139 transitions, 1328 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-09 02:51:48,500 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 1096 flow [2024-11-09 02:51:48,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1096, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-11-09 02:51:48,501 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 68 predicate places. [2024-11-09 02:51:48,501 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 1096 flow [2024-11-09 02:51:48,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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) [2024-11-09 02:51:48,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:48,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:48,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:51:48,702 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 [2024-11-09 02:51:48,703 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:48,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:48,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1034006108, now seen corresponding path program 4 times [2024-11-09 02:51:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:48,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666200589] [2024-11-09 02:51:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:48,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666200589] [2024-11-09 02:51:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666200589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908456956] [2024-11-09 02:51:48,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:51:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:48,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:48,975 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) [2024-11-09 02:51:48,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:51:49,042 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:51:49,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:49,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:51:49,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:49,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:51:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:49,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:49,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:49,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 33 [2024-11-09 02:51:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:49,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908456956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:49,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:49,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-09 02:51:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369774473] [2024-11-09 02:51:49,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:49,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:51:49,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:49,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:51:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:51:49,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:49,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 1096 flow. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2024-11-09 02:51:49,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:49,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:49,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:49,664 INFO L124 PetriNetUnfolderBase]: 261/501 cut-off events. [2024-11-09 02:51:49,664 INFO L125 PetriNetUnfolderBase]: For 2151/2151 co-relation queries the response was YES. [2024-11-09 02:51:49,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 501 events. 261/501 cut-off events. For 2151/2151 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2200 event pairs, 26 based on Foata normal form. 2/503 useless extension candidates. Maximal degree in co-relation 2651. Up to 366 conditions per place. [2024-11-09 02:51:49,669 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 73 selfloop transitions, 46 changer transitions 5/125 dead transitions. [2024-11-09 02:51:49,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 125 transitions, 1448 flow [2024-11-09 02:51:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:51:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:51:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 78 transitions. [2024-11-09 02:51:49,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-09 02:51:49,671 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 1096 flow. Second operand 9 states and 78 transitions. [2024-11-09 02:51:49,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 125 transitions, 1448 flow [2024-11-09 02:51:49,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 125 transitions, 1345 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-11-09 02:51:49,688 INFO L231 Difference]: Finished difference. Result has 88 places, 107 transitions, 1135 flow [2024-11-09 02:51:49,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1135, PETRI_PLACES=88, PETRI_TRANSITIONS=107} [2024-11-09 02:51:49,690 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 67 predicate places. [2024-11-09 02:51:49,690 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 107 transitions, 1135 flow [2024-11-09 02:51:49,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2024-11-09 02:51:49,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:49,690 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:49,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:49,894 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 [2024-11-09 02:51:49,895 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:49,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:49,895 INFO L85 PathProgramCache]: Analyzing trace with hash -626578467, now seen corresponding path program 5 times [2024-11-09 02:51:49,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:49,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586214126] [2024-11-09 02:51:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:49,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:50,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586214126] [2024-11-09 02:51:50,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586214126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516487701] [2024-11-09 02:51:50,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:51:50,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:50,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:50,080 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) [2024-11-09 02:51:50,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:51:50,221 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:51:50,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:50,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:50,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:50,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:51:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516487701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:50,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:51:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-09 02:51:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823592847] [2024-11-09 02:51:50,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:50,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:51:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:51:50,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:51:50,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:50,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 107 transitions, 1135 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 02:51:50,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:50,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:50,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:50,470 INFO L124 PetriNetUnfolderBase]: 283/548 cut-off events. [2024-11-09 02:51:50,471 INFO L125 PetriNetUnfolderBase]: For 2443/2443 co-relation queries the response was YES. [2024-11-09 02:51:50,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 548 events. 283/548 cut-off events. For 2443/2443 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2457 event pairs, 43 based on Foata normal form. 10/558 useless extension candidates. Maximal degree in co-relation 2901. Up to 216 conditions per place. [2024-11-09 02:51:50,476 INFO L140 encePairwiseOnDemand]: 16/20 looper letters, 93 selfloop transitions, 42 changer transitions 0/136 dead transitions. [2024-11-09 02:51:50,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 1633 flow [2024-11-09 02:51:50,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:51:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:51:50,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-09 02:51:50,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-11-09 02:51:50,478 INFO L175 Difference]: Start difference. First operand has 88 places, 107 transitions, 1135 flow. Second operand 5 states and 59 transitions. [2024-11-09 02:51:50,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 1633 flow [2024-11-09 02:51:50,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 136 transitions, 1540 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-09 02:51:50,491 INFO L231 Difference]: Finished difference. Result has 89 places, 114 transitions, 1279 flow [2024-11-09 02:51:50,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1279, PETRI_PLACES=89, PETRI_TRANSITIONS=114} [2024-11-09 02:51:50,493 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 68 predicate places. [2024-11-09 02:51:50,493 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 114 transitions, 1279 flow [2024-11-09 02:51:50,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 02:51:50,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:50,493 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:50,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:51:50,693 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 [2024-11-09 02:51:50,694 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:50,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1232031080, now seen corresponding path program 2 times [2024-11-09 02:51:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:50,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965029977] [2024-11-09 02:51:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:50,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:50,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965029977] [2024-11-09 02:51:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965029977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:50,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166630184] [2024-11-09 02:51:50,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:50,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:50,904 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) [2024-11-09 02:51:50,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:51:51,022 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:51,023 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:51,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:51:51,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:51,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:51,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166630184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:51,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:51,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:51:51,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850441503] [2024-11-09 02:51:51,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:51,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:51:51,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:51,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:51:51,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:51:51,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:51,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 114 transitions, 1279 flow. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 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) [2024-11-09 02:51:51,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:51,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:51,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:51,937 INFO L124 PetriNetUnfolderBase]: 401/805 cut-off events. [2024-11-09 02:51:51,937 INFO L125 PetriNetUnfolderBase]: For 4027/4027 co-relation queries the response was YES. [2024-11-09 02:51:51,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 805 events. 401/805 cut-off events. For 4027/4027 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4175 event pairs, 56 based on Foata normal form. 21/825 useless extension candidates. Maximal degree in co-relation 4233. Up to 257 conditions per place. [2024-11-09 02:51:51,944 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 127 selfloop transitions, 94 changer transitions 0/222 dead transitions. [2024-11-09 02:51:51,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 222 transitions, 2463 flow [2024-11-09 02:51:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 02:51:51,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 02:51:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 183 transitions. [2024-11-09 02:51:51,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4575 [2024-11-09 02:51:51,945 INFO L175 Difference]: Start difference. First operand has 89 places, 114 transitions, 1279 flow. Second operand 20 states and 183 transitions. [2024-11-09 02:51:51,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 222 transitions, 2463 flow [2024-11-09 02:51:51,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 222 transitions, 2381 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-09 02:51:51,970 INFO L231 Difference]: Finished difference. Result has 116 places, 159 transitions, 2012 flow [2024-11-09 02:51:51,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2012, PETRI_PLACES=116, PETRI_TRANSITIONS=159} [2024-11-09 02:51:51,974 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 95 predicate places. [2024-11-09 02:51:51,974 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 159 transitions, 2012 flow [2024-11-09 02:51:51,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 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) [2024-11-09 02:51:51,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:51,974 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:51,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:52,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:52,175 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:52,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:52,176 INFO L85 PathProgramCache]: Analyzing trace with hash 200655015, now seen corresponding path program 6 times [2024-11-09 02:51:52,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:52,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238576160] [2024-11-09 02:51:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:52,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:52,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238576160] [2024-11-09 02:51:52,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238576160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339742056] [2024-11-09 02:51:52,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:51:52,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:52,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:52,343 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) [2024-11-09 02:51:52,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:51:52,409 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:51:52,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:52,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:51:52,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:52,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:51:52,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:52,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 18 [2024-11-09 02:51:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:52,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:53,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2024-11-09 02:51:53,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:53,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 216 treesize of output 188 [2024-11-09 02:51:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:54,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339742056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:54,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:54,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2024-11-09 02:51:54,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683269376] [2024-11-09 02:51:54,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:54,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 02:51:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:54,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 02:51:54,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-09 02:51:54,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:54,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 159 transitions, 2012 flow. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 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) [2024-11-09 02:51:54,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:54,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:54,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:56,362 INFO L124 PetriNetUnfolderBase]: 465/1004 cut-off events. [2024-11-09 02:51:56,363 INFO L125 PetriNetUnfolderBase]: For 7121/7121 co-relation queries the response was YES. [2024-11-09 02:51:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 1004 events. 465/1004 cut-off events. For 7121/7121 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5991 event pairs, 22 based on Foata normal form. 34/1037 useless extension candidates. Maximal degree in co-relation 5859. Up to 231 conditions per place. [2024-11-09 02:51:56,372 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 145 selfloop transitions, 77 changer transitions 79/302 dead transitions. [2024-11-09 02:51:56,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 302 transitions, 3684 flow [2024-11-09 02:51:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 02:51:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-09 02:51:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 300 transitions. [2024-11-09 02:51:56,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-09 02:51:56,376 INFO L175 Difference]: Start difference. First operand has 116 places, 159 transitions, 2012 flow. Second operand 35 states and 300 transitions. [2024-11-09 02:51:56,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 302 transitions, 3684 flow [2024-11-09 02:51:56,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 302 transitions, 3525 flow, removed 73 selfloop flow, removed 2 redundant places. [2024-11-09 02:51:56,415 INFO L231 Difference]: Finished difference. Result has 154 places, 156 transitions, 2004 flow [2024-11-09 02:51:56,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2004, PETRI_PLACES=154, PETRI_TRANSITIONS=156} [2024-11-09 02:51:56,417 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 133 predicate places. [2024-11-09 02:51:56,417 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 156 transitions, 2004 flow [2024-11-09 02:51:56,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 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) [2024-11-09 02:51:56,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:56,418 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:56,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:56,619 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,SelfDestructingSolverStorable11 [2024-11-09 02:51:56,619 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:56,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:56,620 INFO L85 PathProgramCache]: Analyzing trace with hash 857927311, now seen corresponding path program 7 times [2024-11-09 02:51:56,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:56,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035811818] [2024-11-09 02:51:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:56,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:56,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:56,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035811818] [2024-11-09 02:51:56,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035811818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:56,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015970104] [2024-11-09 02:51:56,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:51:56,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:56,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:56,734 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) [2024-11-09 02:51:56,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:51:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:56,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:51:56,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:56,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:51:56,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:51:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:56,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:57,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-09 02:51:57,437 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 02:51:57,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-09 02:51:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:57,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015970104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:57,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:57,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2024-11-09 02:51:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516526723] [2024-11-09 02:51:57,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:57,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:51:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:51:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:51:57,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:57,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 156 transitions, 2004 flow. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 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) [2024-11-09 02:51:57,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:57,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:57,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:58,452 INFO L124 PetriNetUnfolderBase]: 338/745 cut-off events. [2024-11-09 02:51:58,453 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2024-11-09 02:51:58,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4576 conditions, 745 events. 338/745 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4137 event pairs, 15 based on Foata normal form. 4/748 useless extension candidates. Maximal degree in co-relation 4456. Up to 245 conditions per place. [2024-11-09 02:51:58,459 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 141 selfloop transitions, 67 changer transitions 7/216 dead transitions. [2024-11-09 02:51:58,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 216 transitions, 2728 flow [2024-11-09 02:51:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 02:51:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 02:51:58,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 198 transitions. [2024-11-09 02:51:58,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-11-09 02:51:58,460 INFO L175 Difference]: Start difference. First operand has 154 places, 156 transitions, 2004 flow. Second operand 27 states and 198 transitions. [2024-11-09 02:51:58,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 216 transitions, 2728 flow [2024-11-09 02:51:58,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 216 transitions, 2446 flow, removed 115 selfloop flow, removed 13 redundant places. [2024-11-09 02:51:58,496 INFO L231 Difference]: Finished difference. Result has 155 places, 152 transitions, 1812 flow [2024-11-09 02:51:58,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1812, PETRI_PLACES=155, PETRI_TRANSITIONS=152} [2024-11-09 02:51:58,496 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 134 predicate places. [2024-11-09 02:51:58,496 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 152 transitions, 1812 flow [2024-11-09 02:51:58,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 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) [2024-11-09 02:51:58,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:58,497 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:58,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:58,700 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,SelfDestructingSolverStorable12 [2024-11-09 02:51:58,701 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:58,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1622968242, now seen corresponding path program 3 times [2024-11-09 02:51:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875100624] [2024-11-09 02:51:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:58,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:58,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:58,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875100624] [2024-11-09 02:51:58,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875100624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:58,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694642365] [2024-11-09 02:51:58,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:51:58,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:58,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:58,834 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) [2024-11-09 02:51:58,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:51:58,930 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:51:58,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:58,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:51:58,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:58,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:59,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694642365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:59,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:59,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:51:59,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762192707] [2024-11-09 02:51:59,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:59,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:51:59,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:51:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:51:59,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:51:59,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 152 transitions, 1812 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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) [2024-11-09 02:51:59,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:59,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:51:59,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:59,630 INFO L124 PetriNetUnfolderBase]: 336/708 cut-off events. [2024-11-09 02:51:59,630 INFO L125 PetriNetUnfolderBase]: For 4230/4230 co-relation queries the response was YES. [2024-11-09 02:51:59,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 708 events. 336/708 cut-off events. For 4230/4230 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3737 event pairs, 50 based on Foata normal form. 18/725 useless extension candidates. Maximal degree in co-relation 4008. Up to 228 conditions per place. [2024-11-09 02:51:59,640 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 111 selfloop transitions, 83 changer transitions 0/195 dead transitions. [2024-11-09 02:51:59,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 195 transitions, 2398 flow [2024-11-09 02:51:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:51:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:51:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 143 transitions. [2024-11-09 02:51:59,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2024-11-09 02:51:59,642 INFO L175 Difference]: Start difference. First operand has 155 places, 152 transitions, 1812 flow. Second operand 15 states and 143 transitions. [2024-11-09 02:51:59,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 195 transitions, 2398 flow [2024-11-09 02:51:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 195 transitions, 2282 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-11-09 02:51:59,671 INFO L231 Difference]: Finished difference. Result has 152 places, 154 transitions, 1920 flow [2024-11-09 02:51:59,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1920, PETRI_PLACES=152, PETRI_TRANSITIONS=154} [2024-11-09 02:51:59,672 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 131 predicate places. [2024-11-09 02:51:59,672 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 154 transitions, 1920 flow [2024-11-09 02:51:59,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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) [2024-11-09 02:51:59,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:59,673 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:59,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:59,873 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,SelfDestructingSolverStorable13 [2024-11-09 02:51:59,873 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:59,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:59,874 INFO L85 PathProgramCache]: Analyzing trace with hash 611139252, now seen corresponding path program 4 times [2024-11-09 02:51:59,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:59,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956171131] [2024-11-09 02:51:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:59,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:00,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:00,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956171131] [2024-11-09 02:52:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956171131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236099167] [2024-11-09 02:52:00,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:52:00,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:00,039 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) [2024-11-09 02:52:00,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:52:00,147 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:52:00,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:00,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:52:00,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:00,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236099167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:00,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:00,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:52:00,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8051112] [2024-11-09 02:52:00,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:00,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:52:00,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:00,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:52:00,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:52:00,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:00,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 1920 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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) [2024-11-09 02:52:00,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:00,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:00,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:00,686 INFO L124 PetriNetUnfolderBase]: 523/1032 cut-off events. [2024-11-09 02:52:00,687 INFO L125 PetriNetUnfolderBase]: For 7843/7843 co-relation queries the response was YES. [2024-11-09 02:52:00,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 1032 events. 523/1032 cut-off events. For 7843/7843 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5674 event pairs, 92 based on Foata normal form. 16/1047 useless extension candidates. Maximal degree in co-relation 6365. Up to 540 conditions per place. [2024-11-09 02:52:00,699 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 141 selfloop transitions, 116 changer transitions 3/261 dead transitions. [2024-11-09 02:52:00,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 261 transitions, 3636 flow [2024-11-09 02:52:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:52:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:52:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 132 transitions. [2024-11-09 02:52:00,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-09 02:52:00,701 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 1920 flow. Second operand 14 states and 132 transitions. [2024-11-09 02:52:00,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 261 transitions, 3636 flow [2024-11-09 02:52:00,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 261 transitions, 3462 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-11-09 02:52:00,772 INFO L231 Difference]: Finished difference. Result has 162 places, 210 transitions, 2966 flow [2024-11-09 02:52:00,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2966, PETRI_PLACES=162, PETRI_TRANSITIONS=210} [2024-11-09 02:52:00,774 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 141 predicate places. [2024-11-09 02:52:00,774 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 210 transitions, 2966 flow [2024-11-09 02:52:00,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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) [2024-11-09 02:52:00,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:00,775 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:00,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:00,978 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,SelfDestructingSolverStorable14 [2024-11-09 02:52:00,979 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:00,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1395782889, now seen corresponding path program 8 times [2024-11-09 02:52:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404176537] [2024-11-09 02:52:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:00,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:52:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404176537] [2024-11-09 02:52:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404176537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969267606] [2024-11-09 02:52:01,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:52:01,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:01,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:01,076 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) [2024-11-09 02:52:01,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:52:01,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:52:01,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:01,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 02:52:01,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:01,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:52:01,300 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 02:52:01,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2024-11-09 02:52:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:01,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:01,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 116 [2024-11-09 02:52:01,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:52:01,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 298 treesize of output 240 [2024-11-09 02:52:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:02,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969267606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:02,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:02,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-09 02:52:02,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438717026] [2024-11-09 02:52:02,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:02,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:52:02,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:52:02,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:52:02,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:02,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 210 transitions, 2966 flow. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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) [2024-11-09 02:52:02,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:02,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:02,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:03,489 INFO L124 PetriNetUnfolderBase]: 598/1158 cut-off events. [2024-11-09 02:52:03,489 INFO L125 PetriNetUnfolderBase]: For 11275/11275 co-relation queries the response was YES. [2024-11-09 02:52:03,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8002 conditions, 1158 events. 598/1158 cut-off events. For 11275/11275 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6386 event pairs, 23 based on Foata normal form. 8/1165 useless extension candidates. Maximal degree in co-relation 7815. Up to 470 conditions per place. [2024-11-09 02:52:03,500 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 169 selfloop transitions, 114 changer transitions 50/334 dead transitions. [2024-11-09 02:52:03,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 334 transitions, 4951 flow [2024-11-09 02:52:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 02:52:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-09 02:52:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 245 transitions. [2024-11-09 02:52:03,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-11-09 02:52:03,502 INFO L175 Difference]: Start difference. First operand has 162 places, 210 transitions, 2966 flow. Second operand 33 states and 245 transitions. [2024-11-09 02:52:03,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 334 transitions, 4951 flow [2024-11-09 02:52:03,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 334 transitions, 4395 flow, removed 255 selfloop flow, removed 9 redundant places. [2024-11-09 02:52:03,576 INFO L231 Difference]: Finished difference. Result has 192 places, 226 transitions, 3250 flow [2024-11-09 02:52:03,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3250, PETRI_PLACES=192, PETRI_TRANSITIONS=226} [2024-11-09 02:52:03,577 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 171 predicate places. [2024-11-09 02:52:03,577 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 226 transitions, 3250 flow [2024-11-09 02:52:03,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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) [2024-11-09 02:52:03,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:03,578 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:03,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:03,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 02:52:03,781 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:03,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1019024268, now seen corresponding path program 5 times [2024-11-09 02:52:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:03,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834063331] [2024-11-09 02:52:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:03,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834063331] [2024-11-09 02:52:03,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834063331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367616536] [2024-11-09 02:52:03,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:52:03,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:03,942 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) [2024-11-09 02:52:03,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:52:04,050 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:52:04,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:04,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:52:04,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:04,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:04,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367616536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:04,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:04,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 02:52:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302926606] [2024-11-09 02:52:04,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:04,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:52:04,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:04,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:52:04,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:52:04,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:04,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 226 transitions, 3250 flow. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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) [2024-11-09 02:52:04,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:04,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:04,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:04,616 INFO L124 PetriNetUnfolderBase]: 560/1049 cut-off events. [2024-11-09 02:52:04,616 INFO L125 PetriNetUnfolderBase]: For 9463/9463 co-relation queries the response was YES. [2024-11-09 02:52:04,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7250 conditions, 1049 events. 560/1049 cut-off events. For 9463/9463 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5571 event pairs, 72 based on Foata normal form. 21/1069 useless extension candidates. Maximal degree in co-relation 7174. Up to 417 conditions per place. [2024-11-09 02:52:04,629 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 156 selfloop transitions, 124 changer transitions 3/284 dead transitions. [2024-11-09 02:52:04,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 284 transitions, 4401 flow [2024-11-09 02:52:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:52:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:52:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 133 transitions. [2024-11-09 02:52:04,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-11-09 02:52:04,631 INFO L175 Difference]: Start difference. First operand has 192 places, 226 transitions, 3250 flow. Second operand 16 states and 133 transitions. [2024-11-09 02:52:04,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 284 transitions, 4401 flow [2024-11-09 02:52:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 284 transitions, 3935 flow, removed 194 selfloop flow, removed 16 redundant places. [2024-11-09 02:52:04,683 INFO L231 Difference]: Finished difference. Result has 164 places, 235 transitions, 3288 flow [2024-11-09 02:52:04,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3288, PETRI_PLACES=164, PETRI_TRANSITIONS=235} [2024-11-09 02:52:04,683 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 143 predicate places. [2024-11-09 02:52:04,684 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 235 transitions, 3288 flow [2024-11-09 02:52:04,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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) [2024-11-09 02:52:04,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:04,684 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:04,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:04,884 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,SelfDestructingSolverStorable16 [2024-11-09 02:52:04,885 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:04,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 532491012, now seen corresponding path program 6 times [2024-11-09 02:52:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21647037] [2024-11-09 02:52:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:04,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:05,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21647037] [2024-11-09 02:52:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21647037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102710393] [2024-11-09 02:52:05,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:52:05,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:05,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:05,072 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) [2024-11-09 02:52:05,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 02:52:05,204 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:52:05,205 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:05,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:52:05,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:05,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:05,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102710393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:05,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:05,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:52:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160704704] [2024-11-09 02:52:05,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:05,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:52:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:52:05,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:52:05,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:05,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 235 transitions, 3288 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:05,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:05,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:05,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:05,793 INFO L124 PetriNetUnfolderBase]: 552/1039 cut-off events. [2024-11-09 02:52:05,794 INFO L125 PetriNetUnfolderBase]: For 9420/9420 co-relation queries the response was YES. [2024-11-09 02:52:05,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7186 conditions, 1039 events. 552/1039 cut-off events. For 9420/9420 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5564 event pairs, 92 based on Foata normal form. 15/1053 useless extension candidates. Maximal degree in co-relation 7113. Up to 616 conditions per place. [2024-11-09 02:52:05,808 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 158 selfloop transitions, 117 changer transitions 2/278 dead transitions. [2024-11-09 02:52:05,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 278 transitions, 4144 flow [2024-11-09 02:52:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:52:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:52:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 136 transitions. [2024-11-09 02:52:05,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-09 02:52:05,809 INFO L175 Difference]: Start difference. First operand has 164 places, 235 transitions, 3288 flow. Second operand 16 states and 136 transitions. [2024-11-09 02:52:05,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 278 transitions, 4144 flow [2024-11-09 02:52:05,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 278 transitions, 4037 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-11-09 02:52:05,863 INFO L231 Difference]: Finished difference. Result has 175 places, 236 transitions, 3488 flow [2024-11-09 02:52:05,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3122, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3488, PETRI_PLACES=175, PETRI_TRANSITIONS=236} [2024-11-09 02:52:05,863 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 154 predicate places. [2024-11-09 02:52:05,864 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 236 transitions, 3488 flow [2024-11-09 02:52:05,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:05,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:05,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:05,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:06,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:06,065 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:06,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:06,065 INFO L85 PathProgramCache]: Analyzing trace with hash 551757624, now seen corresponding path program 7 times [2024-11-09 02:52:06,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:06,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083271048] [2024-11-09 02:52:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:06,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:06,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:06,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083271048] [2024-11-09 02:52:06,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083271048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:06,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039309358] [2024-11-09 02:52:06,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:52:06,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:06,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:06,206 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) [2024-11-09 02:52:06,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 02:52:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:06,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:52:06,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:06,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:06,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039309358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:06,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:06,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:52:06,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238140619] [2024-11-09 02:52:06,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:06,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:52:06,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:06,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:52:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:52:06,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:06,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 236 transitions, 3488 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:06,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:06,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:06,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:07,063 INFO L124 PetriNetUnfolderBase]: 816/1565 cut-off events. [2024-11-09 02:52:07,063 INFO L125 PetriNetUnfolderBase]: For 15861/15861 co-relation queries the response was YES. [2024-11-09 02:52:07,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10858 conditions, 1565 events. 816/1565 cut-off events. For 15861/15861 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9148 event pairs, 49 based on Foata normal form. 14/1578 useless extension candidates. Maximal degree in co-relation 10783. Up to 544 conditions per place. [2024-11-09 02:52:07,073 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 190 selfloop transitions, 200 changer transitions 0/391 dead transitions. [2024-11-09 02:52:07,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 391 transitions, 6059 flow [2024-11-09 02:52:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:52:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:52:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 149 transitions. [2024-11-09 02:52:07,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2024-11-09 02:52:07,075 INFO L175 Difference]: Start difference. First operand has 175 places, 236 transitions, 3488 flow. Second operand 15 states and 149 transitions. [2024-11-09 02:52:07,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 391 transitions, 6059 flow [2024-11-09 02:52:07,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 391 transitions, 5895 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-11-09 02:52:07,127 INFO L231 Difference]: Finished difference. Result has 187 places, 313 transitions, 5142 flow [2024-11-09 02:52:07,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5142, PETRI_PLACES=187, PETRI_TRANSITIONS=313} [2024-11-09 02:52:07,128 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 166 predicate places. [2024-11-09 02:52:07,128 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 313 transitions, 5142 flow [2024-11-09 02:52:07,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:07,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:07,129 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:07,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 02:52:07,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:07,329 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:07,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash -341249668, now seen corresponding path program 8 times [2024-11-09 02:52:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:07,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784663245] [2024-11-09 02:52:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:07,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:07,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784663245] [2024-11-09 02:52:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784663245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881208402] [2024-11-09 02:52:07,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:52:07,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:07,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:07,491 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) [2024-11-09 02:52:07,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 02:52:07,562 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:52:07,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:07,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:52:07,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:07,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:07,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881208402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:07,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:07,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:52:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798721744] [2024-11-09 02:52:07,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:07,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:52:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:52:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:52:07,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:07,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 313 transitions, 5142 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:07,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:07,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:07,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:08,358 INFO L124 PetriNetUnfolderBase]: 815/1556 cut-off events. [2024-11-09 02:52:08,359 INFO L125 PetriNetUnfolderBase]: For 20494/20494 co-relation queries the response was YES. [2024-11-09 02:52:08,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11990 conditions, 1556 events. 815/1556 cut-off events. For 20494/20494 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9034 event pairs, 51 based on Foata normal form. 9/1564 useless extension candidates. Maximal degree in co-relation 11908. Up to 556 conditions per place. [2024-11-09 02:52:08,374 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 181 selfloop transitions, 202 changer transitions 0/384 dead transitions. [2024-11-09 02:52:08,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 384 transitions, 6663 flow [2024-11-09 02:52:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:52:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:52:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 143 transitions. [2024-11-09 02:52:08,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-11-09 02:52:08,376 INFO L175 Difference]: Start difference. First operand has 187 places, 313 transitions, 5142 flow. Second operand 16 states and 143 transitions. [2024-11-09 02:52:08,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 384 transitions, 6663 flow [2024-11-09 02:52:08,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 384 transitions, 6421 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-11-09 02:52:08,499 INFO L231 Difference]: Finished difference. Result has 202 places, 317 transitions, 5564 flow [2024-11-09 02:52:08,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5564, PETRI_PLACES=202, PETRI_TRANSITIONS=317} [2024-11-09 02:52:08,500 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 181 predicate places. [2024-11-09 02:52:08,500 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 317 transitions, 5564 flow [2024-11-09 02:52:08,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:08,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:08,501 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:08,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 02:52:08,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:08,701 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:08,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash -263196074, now seen corresponding path program 9 times [2024-11-09 02:52:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:08,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202298983] [2024-11-09 02:52:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:08,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202298983] [2024-11-09 02:52:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202298983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888516791] [2024-11-09 02:52:08,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:52:08,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:08,828 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) [2024-11-09 02:52:08,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 02:52:08,935 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:52:08,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:08,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:52:08,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:08,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888516791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:09,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:52:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425206129] [2024-11-09 02:52:09,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:09,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:52:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:52:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:52:09,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:09,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 317 transitions, 5564 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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) [2024-11-09 02:52:09,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:09,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:09,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:09,837 INFO L124 PetriNetUnfolderBase]: 910/1747 cut-off events. [2024-11-09 02:52:09,837 INFO L125 PetriNetUnfolderBase]: For 26118/26118 co-relation queries the response was YES. [2024-11-09 02:52:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13976 conditions, 1747 events. 910/1747 cut-off events. For 26118/26118 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10373 event pairs, 30 based on Foata normal form. 6/1752 useless extension candidates. Maximal degree in co-relation 13891. Up to 472 conditions per place. [2024-11-09 02:52:09,853 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 231 selfloop transitions, 184 changer transitions 0/416 dead transitions. [2024-11-09 02:52:09,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 416 transitions, 7686 flow [2024-11-09 02:52:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:52:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:52:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 160 transitions. [2024-11-09 02:52:09,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-11-09 02:52:09,854 INFO L175 Difference]: Start difference. First operand has 202 places, 317 transitions, 5564 flow. Second operand 17 states and 160 transitions. [2024-11-09 02:52:09,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 416 transitions, 7686 flow [2024-11-09 02:52:09,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 416 transitions, 7546 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-11-09 02:52:09,995 INFO L231 Difference]: Finished difference. Result has 212 places, 327 transitions, 6069 flow [2024-11-09 02:52:09,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6069, PETRI_PLACES=212, PETRI_TRANSITIONS=327} [2024-11-09 02:52:09,995 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 191 predicate places. [2024-11-09 02:52:09,996 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 327 transitions, 6069 flow [2024-11-09 02:52:09,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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) [2024-11-09 02:52:09,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:09,996 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:10,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 02:52:10,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:10,197 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:10,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1100359369, now seen corresponding path program 1 times [2024-11-09 02:52:10,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204116709] [2024-11-09 02:52:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:10,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:10,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204116709] [2024-11-09 02:52:10,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204116709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:10,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477380522] [2024-11-09 02:52:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:10,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:10,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:10,388 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:52:10,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 02:52:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:10,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:52:10,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:10,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:14,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477380522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:14,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:14,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2024-11-09 02:52:14,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767090737] [2024-11-09 02:52:14,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:14,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 02:52:14,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:14,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 02:52:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2024-11-09 02:52:14,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:14,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 327 transitions, 6069 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-11-09 02:52:14,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:14,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:14,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:27,078 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification. DAG size of input: 33 DAG size of output: 32 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 02:52:39,385 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification. DAG size of input: 36 DAG size of output: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 02:52:39,703 INFO L124 PetriNetUnfolderBase]: 820/1612 cut-off events. [2024-11-09 02:52:39,703 INFO L125 PetriNetUnfolderBase]: For 27617/27617 co-relation queries the response was YES. [2024-11-09 02:52:39,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13218 conditions, 1612 events. 820/1612 cut-off events. For 27617/27617 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9636 event pairs, 104 based on Foata normal form. 51/1662 useless extension candidates. Maximal degree in co-relation 13131. Up to 462 conditions per place. [2024-11-09 02:52:39,719 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 187 selfloop transitions, 157 changer transitions 12/357 dead transitions. [2024-11-09 02:52:39,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 357 transitions, 6998 flow [2024-11-09 02:52:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:52:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:52:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-09 02:52:39,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-11-09 02:52:39,721 INFO L175 Difference]: Start difference. First operand has 212 places, 327 transitions, 6069 flow. Second operand 9 states and 86 transitions. [2024-11-09 02:52:39,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 357 transitions, 6998 flow [2024-11-09 02:52:39,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 357 transitions, 6691 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-11-09 02:52:39,923 INFO L231 Difference]: Finished difference. Result has 215 places, 323 transitions, 6083 flow [2024-11-09 02:52:39,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5417, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6083, PETRI_PLACES=215, PETRI_TRANSITIONS=323} [2024-11-09 02:52:39,924 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 194 predicate places. [2024-11-09 02:52:39,924 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 323 transitions, 6083 flow [2024-11-09 02:52:39,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-11-09 02:52:39,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:39,924 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:39,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 02:52:40,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:40,129 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:40,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2101184528, now seen corresponding path program 9 times [2024-11-09 02:52:40,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:40,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074341340] [2024-11-09 02:52:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:40,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074341340] [2024-11-09 02:52:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074341340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495527309] [2024-11-09 02:52:40,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:52:40,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:40,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:40,295 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:52:40,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 02:52:40,399 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:52:40,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:40,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:52:40,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:40,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:40,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495527309] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:40,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:52:40,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 13 [2024-11-09 02:52:40,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688329140] [2024-11-09 02:52:40,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:40,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:52:40,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:52:40,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:52:40,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:40,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 323 transitions, 6083 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 02:52:40,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:40,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:40,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:40,931 INFO L124 PetriNetUnfolderBase]: 815/1626 cut-off events. [2024-11-09 02:52:40,931 INFO L125 PetriNetUnfolderBase]: For 26279/26279 co-relation queries the response was YES. [2024-11-09 02:52:40,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13582 conditions, 1626 events. 815/1626 cut-off events. For 26279/26279 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9854 event pairs, 41 based on Foata normal form. 5/1630 useless extension candidates. Maximal degree in co-relation 13495. Up to 988 conditions per place. [2024-11-09 02:52:40,942 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 241 selfloop transitions, 101 changer transitions 0/343 dead transitions. [2024-11-09 02:52:40,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 343 transitions, 6992 flow [2024-11-09 02:52:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:52:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:52:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-11-09 02:52:40,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-09 02:52:40,943 INFO L175 Difference]: Start difference. First operand has 215 places, 323 transitions, 6083 flow. Second operand 5 states and 57 transitions. [2024-11-09 02:52:40,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 343 transitions, 6992 flow [2024-11-09 02:52:41,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 343 transitions, 6756 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-11-09 02:52:41,054 INFO L231 Difference]: Finished difference. Result has 212 places, 331 transitions, 6410 flow [2024-11-09 02:52:41,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5800, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6410, PETRI_PLACES=212, PETRI_TRANSITIONS=331} [2024-11-09 02:52:41,055 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 191 predicate places. [2024-11-09 02:52:41,055 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 331 transitions, 6410 flow [2024-11-09 02:52:41,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 02:52:41,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:41,055 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:41,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:41,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:41,256 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:41,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1468650046, now seen corresponding path program 10 times [2024-11-09 02:52:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:41,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793158595] [2024-11-09 02:52:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:41,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793158595] [2024-11-09 02:52:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793158595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159969153] [2024-11-09 02:52:41,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:52:41,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:41,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:41,400 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:52:41,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 02:52:41,508 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:52:41,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:41,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 02:52:41,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:41,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159969153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:41,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 02:52:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720506965] [2024-11-09 02:52:41,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:41,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:52:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:52:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:52:41,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:41,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 331 transitions, 6410 flow. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 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) [2024-11-09 02:52:41,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:41,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:41,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:42,581 INFO L124 PetriNetUnfolderBase]: 823/1646 cut-off events. [2024-11-09 02:52:42,581 INFO L125 PetriNetUnfolderBase]: For 27844/27844 co-relation queries the response was YES. [2024-11-09 02:52:42,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13801 conditions, 1646 events. 823/1646 cut-off events. For 27844/27844 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10047 event pairs, 98 based on Foata normal form. 12/1657 useless extension candidates. Maximal degree in co-relation 13714. Up to 479 conditions per place. [2024-11-09 02:52:42,592 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 191 selfloop transitions, 187 changer transitions 2/381 dead transitions. [2024-11-09 02:52:42,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 381 transitions, 7517 flow [2024-11-09 02:52:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:52:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:52:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 136 transitions. [2024-11-09 02:52:42,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-09 02:52:42,594 INFO L175 Difference]: Start difference. First operand has 212 places, 331 transitions, 6410 flow. Second operand 17 states and 136 transitions. [2024-11-09 02:52:42,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 381 transitions, 7517 flow [2024-11-09 02:52:42,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 381 transitions, 7507 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-09 02:52:42,712 INFO L231 Difference]: Finished difference. Result has 232 places, 335 transitions, 6849 flow [2024-11-09 02:52:42,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6400, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6849, PETRI_PLACES=232, PETRI_TRANSITIONS=335} [2024-11-09 02:52:42,713 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 211 predicate places. [2024-11-09 02:52:42,713 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 335 transitions, 6849 flow [2024-11-09 02:52:42,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 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) [2024-11-09 02:52:42,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:42,713 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:42,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:42,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 02:52:42,914 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:42,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1028099148, now seen corresponding path program 10 times [2024-11-09 02:52:42,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:42,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653495669] [2024-11-09 02:52:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:42,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:43,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:43,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653495669] [2024-11-09 02:52:43,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653495669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:43,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447146323] [2024-11-09 02:52:43,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:52:43,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:43,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:43,066 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:52:43,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 02:52:43,165 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:52:43,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:43,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 02:52:43,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:43,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:43,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447146323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:43,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:43,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2024-11-09 02:52:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201455646] [2024-11-09 02:52:43,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:43,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:52:43,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:52:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:52:43,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:43,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 335 transitions, 6849 flow. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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) [2024-11-09 02:52:43,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:43,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:43,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:44,097 INFO L124 PetriNetUnfolderBase]: 906/1834 cut-off events. [2024-11-09 02:52:44,097 INFO L125 PetriNetUnfolderBase]: For 34975/34975 co-relation queries the response was YES. [2024-11-09 02:52:44,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16009 conditions, 1834 events. 906/1834 cut-off events. For 34975/34975 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11649 event pairs, 150 based on Foata normal form. 27/1860 useless extension candidates. Maximal degree in co-relation 15917. Up to 775 conditions per place. [2024-11-09 02:52:44,113 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 264 selfloop transitions, 154 changer transitions 2/421 dead transitions. [2024-11-09 02:52:44,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 421 transitions, 8791 flow [2024-11-09 02:52:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 02:52:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 02:52:44,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 166 transitions. [2024-11-09 02:52:44,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-11-09 02:52:44,114 INFO L175 Difference]: Start difference. First operand has 232 places, 335 transitions, 6849 flow. Second operand 18 states and 166 transitions. [2024-11-09 02:52:44,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 421 transitions, 8791 flow [2024-11-09 02:52:44,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 421 transitions, 8395 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-11-09 02:52:44,257 INFO L231 Difference]: Finished difference. Result has 250 places, 366 transitions, 7660 flow [2024-11-09 02:52:44,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6428, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7660, PETRI_PLACES=250, PETRI_TRANSITIONS=366} [2024-11-09 02:52:44,258 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 229 predicate places. [2024-11-09 02:52:44,258 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 366 transitions, 7660 flow [2024-11-09 02:52:44,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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) [2024-11-09 02:52:44,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:44,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:44,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:44,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 02:52:44,459 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:44,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 258102890, now seen corresponding path program 11 times [2024-11-09 02:52:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:44,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123644593] [2024-11-09 02:52:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:44,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:44,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123644593] [2024-11-09 02:52:44,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123644593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:44,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311796053] [2024-11-09 02:52:44,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:52:44,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:44,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:44,611 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:52:44,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 02:52:44,727 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:52:44,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:44,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 02:52:44,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:44,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:44,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311796053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:44,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:44,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-09 02:52:44,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238252789] [2024-11-09 02:52:44,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:44,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:52:44,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:44,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:52:44,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:52:44,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:44,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 366 transitions, 7660 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:44,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:44,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:44,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:45,702 INFO L124 PetriNetUnfolderBase]: 943/1891 cut-off events. [2024-11-09 02:52:45,702 INFO L125 PetriNetUnfolderBase]: For 37244/37244 co-relation queries the response was YES. [2024-11-09 02:52:45,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16853 conditions, 1891 events. 943/1891 cut-off events. For 37244/37244 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11947 event pairs, 137 based on Foata normal form. 22/1912 useless extension candidates. Maximal degree in co-relation 16753. Up to 639 conditions per place. [2024-11-09 02:52:45,721 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 287 selfloop transitions, 131 changer transitions 2/421 dead transitions. [2024-11-09 02:52:45,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 421 transitions, 9126 flow [2024-11-09 02:52:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:52:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:52:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 133 transitions. [2024-11-09 02:52:45,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-11-09 02:52:45,723 INFO L175 Difference]: Start difference. First operand has 250 places, 366 transitions, 7660 flow. Second operand 16 states and 133 transitions. [2024-11-09 02:52:45,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 421 transitions, 9126 flow [2024-11-09 02:52:45,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 421 transitions, 8935 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-11-09 02:52:45,909 INFO L231 Difference]: Finished difference. Result has 258 places, 371 transitions, 7844 flow [2024-11-09 02:52:45,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7417, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7844, PETRI_PLACES=258, PETRI_TRANSITIONS=371} [2024-11-09 02:52:45,910 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 237 predicate places. [2024-11-09 02:52:45,910 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 371 transitions, 7844 flow [2024-11-09 02:52:45,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:45,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:45,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:45,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 02:52:46,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 02:52:46,111 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:46,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1372769990, now seen corresponding path program 11 times [2024-11-09 02:52:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:46,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511985592] [2024-11-09 02:52:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:46,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:46,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:46,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511985592] [2024-11-09 02:52:46,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511985592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:46,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920855882] [2024-11-09 02:52:46,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:52:46,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:46,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:46,239 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:52:46,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 02:52:46,410 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:52:46,410 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:46,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:52:46,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:46,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920855882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:46,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:46,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 02:52:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380632627] [2024-11-09 02:52:46,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:46,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:52:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:52:46,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:52:46,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:46,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 371 transitions, 7844 flow. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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) [2024-11-09 02:52:46,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:46,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:46,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:47,535 INFO L124 PetriNetUnfolderBase]: 947/1905 cut-off events. [2024-11-09 02:52:47,535 INFO L125 PetriNetUnfolderBase]: For 36374/36374 co-relation queries the response was YES. [2024-11-09 02:52:47,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17185 conditions, 1905 events. 947/1905 cut-off events. For 36374/36374 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12145 event pairs, 126 based on Foata normal form. 15/1919 useless extension candidates. Maximal degree in co-relation 17085. Up to 609 conditions per place. [2024-11-09 02:52:47,553 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 228 selfloop transitions, 193 changer transitions 1/423 dead transitions. [2024-11-09 02:52:47,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 423 transitions, 9039 flow [2024-11-09 02:52:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 02:52:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 02:52:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 150 transitions. [2024-11-09 02:52:47,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-09 02:52:47,554 INFO L175 Difference]: Start difference. First operand has 258 places, 371 transitions, 7844 flow. Second operand 18 states and 150 transitions. [2024-11-09 02:52:47,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 423 transitions, 9039 flow [2024-11-09 02:52:47,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 423 transitions, 8863 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-09 02:52:47,702 INFO L231 Difference]: Finished difference. Result has 266 places, 375 transitions, 8134 flow [2024-11-09 02:52:47,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8134, PETRI_PLACES=266, PETRI_TRANSITIONS=375} [2024-11-09 02:52:47,703 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 245 predicate places. [2024-11-09 02:52:47,703 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 375 transitions, 8134 flow [2024-11-09 02:52:47,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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) [2024-11-09 02:52:47,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:47,703 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:47,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:47,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:47,904 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:47,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1735772862, now seen corresponding path program 12 times [2024-11-09 02:52:47,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:47,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126435081] [2024-11-09 02:52:47,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:47,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:48,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126435081] [2024-11-09 02:52:48,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126435081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:48,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632923578] [2024-11-09 02:52:48,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:52:48,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:48,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:48,053 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:52:48,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 02:52:48,129 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:52:48,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:52:48,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:52:48,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:48,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:48,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632923578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:48,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-09 02:52:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33360753] [2024-11-09 02:52:48,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:48,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:52:48,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:52:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:52:48,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:48,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 375 transitions, 8134 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:48,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:48,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:48,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:49,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 02:52:50,424 INFO L124 PetriNetUnfolderBase]: 962/1958 cut-off events. [2024-11-09 02:52:50,424 INFO L125 PetriNetUnfolderBase]: For 39600/39600 co-relation queries the response was YES. [2024-11-09 02:52:50,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17813 conditions, 1958 events. 962/1958 cut-off events. For 39600/39600 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12701 event pairs, 208 based on Foata normal form. 4/1961 useless extension candidates. Maximal degree in co-relation 17711. Up to 960 conditions per place. [2024-11-09 02:52:50,441 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 335 selfloop transitions, 77 changer transitions 5/418 dead transitions. [2024-11-09 02:52:50,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 418 transitions, 9466 flow [2024-11-09 02:52:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:52:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:52:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 114 transitions. [2024-11-09 02:52:50,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-11-09 02:52:50,443 INFO L175 Difference]: Start difference. First operand has 266 places, 375 transitions, 8134 flow. Second operand 14 states and 114 transitions. [2024-11-09 02:52:50,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 418 transitions, 9466 flow [2024-11-09 02:52:50,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 418 transitions, 9057 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-11-09 02:52:50,618 INFO L231 Difference]: Finished difference. Result has 271 places, 374 transitions, 7930 flow [2024-11-09 02:52:50,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7716, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7930, PETRI_PLACES=271, PETRI_TRANSITIONS=374} [2024-11-09 02:52:50,618 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 250 predicate places. [2024-11-09 02:52:50,619 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 374 transitions, 7930 flow [2024-11-09 02:52:50,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:50,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:50,619 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:50,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 02:52:50,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 02:52:50,820 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:52:50,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1564775838, now seen corresponding path program 13 times [2024-11-09 02:52:50,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:50,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746207902] [2024-11-09 02:52:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:50,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746207902] [2024-11-09 02:52:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746207902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:52:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138447050] [2024-11-09 02:52:50,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:52:50,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:52:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:52:50,934 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:52:50,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 02:52:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:51,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:52:51,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:52:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:51,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:52:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:52:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138447050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:52:51,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:52:51,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-11-09 02:52:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858223985] [2024-11-09 02:52:51,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:52:51,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:52:51,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:52:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:52:51,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:52:51,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 374 transitions, 7930 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:51,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:51,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:52:51,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:55,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 02:52:59,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 02:52:59,727 INFO L124 PetriNetUnfolderBase]: 956/1938 cut-off events. [2024-11-09 02:52:59,727 INFO L125 PetriNetUnfolderBase]: For 38785/38785 co-relation queries the response was YES. [2024-11-09 02:52:59,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17362 conditions, 1938 events. 956/1938 cut-off events. For 38785/38785 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12472 event pairs, 210 based on Foata normal form. 2/1939 useless extension candidates. Maximal degree in co-relation 17260. Up to 1001 conditions per place. [2024-11-09 02:52:59,746 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 318 selfloop transitions, 71 changer transitions 5/395 dead transitions. [2024-11-09 02:52:59,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 395 transitions, 8939 flow [2024-11-09 02:52:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:52:59,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:52:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 70 transitions. [2024-11-09 02:52:59,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-09 02:52:59,748 INFO L175 Difference]: Start difference. First operand has 271 places, 374 transitions, 7930 flow. Second operand 9 states and 70 transitions. [2024-11-09 02:52:59,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 395 transitions, 8939 flow [2024-11-09 02:52:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 395 transitions, 8758 flow, removed 19 selfloop flow, removed 13 redundant places. [2024-11-09 02:52:59,919 INFO L231 Difference]: Finished difference. Result has 264 places, 370 transitions, 7789 flow [2024-11-09 02:52:59,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7735, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7789, PETRI_PLACES=264, PETRI_TRANSITIONS=370} [2024-11-09 02:52:59,920 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 243 predicate places. [2024-11-09 02:52:59,920 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 370 transitions, 7789 flow [2024-11-09 02:52:59,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:59,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:59,921 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:59,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 02:53:00,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 02:53:00,121 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:53:00,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:53:00,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1576779404, now seen corresponding path program 14 times [2024-11-09 02:53:00,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:53:00,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561346665] [2024-11-09 02:53:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:53:00,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:53:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:53:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:53:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:53:00,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561346665] [2024-11-09 02:53:00,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561346665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:53:00,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45810423] [2024-11-09 02:53:00,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:53:00,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:53:00,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:53:00,286 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:53:00,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 02:53:00,391 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:53:00,391 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:53:00,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:53:00,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:53:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:53:00,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:53:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:53:00,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45810423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:53:00,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:53:00,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-09 02:53:00,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882007037] [2024-11-09 02:53:00,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:53:00,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:53:00,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:53:00,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:53:00,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:53:00,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-09 02:53:00,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 370 transitions, 7789 flow. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2024-11-09 02:53:00,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:53:00,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-09 02:53:00,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:53:01,148 INFO L124 PetriNetUnfolderBase]: 956/1923 cut-off events. [2024-11-09 02:53:01,148 INFO L125 PetriNetUnfolderBase]: For 40196/40196 co-relation queries the response was YES. [2024-11-09 02:53:01,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17279 conditions, 1923 events. 956/1923 cut-off events. For 40196/40196 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12218 event pairs, 359 based on Foata normal form. 10/1932 useless extension candidates. Maximal degree in co-relation 17181. Up to 1749 conditions per place. [2024-11-09 02:53:01,166 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 340 selfloop transitions, 49 changer transitions 0/390 dead transitions. [2024-11-09 02:53:01,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 390 transitions, 8721 flow [2024-11-09 02:53:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:53:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:53:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2024-11-09 02:53:01,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-11-09 02:53:01,167 INFO L175 Difference]: Start difference. First operand has 264 places, 370 transitions, 7789 flow. Second operand 10 states and 84 transitions. [2024-11-09 02:53:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 390 transitions, 8721 flow [2024-11-09 02:53:01,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 390 transitions, 8391 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-11-09 02:53:01,324 INFO L231 Difference]: Finished difference. Result has 258 places, 371 transitions, 7603 flow [2024-11-09 02:53:01,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7418, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7603, PETRI_PLACES=258, PETRI_TRANSITIONS=371} [2024-11-09 02:53:01,325 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 237 predicate places. [2024-11-09 02:53:01,325 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 371 transitions, 7603 flow [2024-11-09 02:53:01,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2024-11-09 02:53:01,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:53:01,325 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:53:01,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-09 02:53:01,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:53:01,526 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:53:01,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:53:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1524411147, now seen corresponding path program 2 times [2024-11-09 02:53:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:53:01,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879438411] [2024-11-09 02:53:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:53:01,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:53:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat