./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i -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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:20:06,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:20:06,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:20:06,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:20:06,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:20:06,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:20:06,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:20:06,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:20:06,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:20:06,345 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:20:06,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:20:06,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:20:06,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:20:06,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:20:06,347 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:20:06,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:20:06,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:20:06,349 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:20:06,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:20:06,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:20:06,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:20:06,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:20:06,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:20:06,353 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:20:06,354 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:20:06,354 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:20:06,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:20:06,354 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:20:06,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:20:06,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:20:06,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:20:06,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:20:06,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:20:06,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:20:06,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:20:06,360 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:20:06,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:20:06,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:20:06,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:20:06,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:20:06,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:20:06,362 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:20:06,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2024-10-24 12:20:06,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:20:06,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:20:06,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:20:06,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:20:06,700 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:20:06,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-10-24 12:20:08,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:20:08,582 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:20:08,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-10-24 12:20:08,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b505db256/93515b8da5bd4d6d92479e9f998918d6/FLAGebb75b870 [2024-10-24 12:20:08,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b505db256/93515b8da5bd4d6d92479e9f998918d6 [2024-10-24 12:20:08,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:20:08,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:20:08,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:20:08,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:20:08,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:20:08,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:20:08" (1/1) ... [2024-10-24 12:20:08,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510cacce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:08, skipping insertion in model container [2024-10-24 12:20:08,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:20:08" (1/1) ... [2024-10-24 12:20:08,717 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:20:09,185 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[186203,186216] [2024-10-24 12:20:09,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:20:09,243 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:20:09,298 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[186203,186216] [2024-10-24 12:20:09,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:20:09,367 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:20:09,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09 WrapperNode [2024-10-24 12:20:09,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:20:09,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:20:09,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:20:09,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:20:09,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,450 INFO L138 Inliner]: procedures = 246, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 126 [2024-10-24 12:20:09,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:20:09,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:20:09,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:20:09,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:20:09,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,474 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,505 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 13, 2]. 76 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 6, 2]. [2024-10-24 12:20:09,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:20:09,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:20:09,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:20:09,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:20:09,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (1/1) ... [2024-10-24 12:20:09,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:20:09,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:20:09,613 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) [2024-10-24 12:20:09,615 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 [2024-10-24 12:20:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2024-10-24 12:20:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2024-10-24 12:20:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:20:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:20:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:20:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:20:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:20:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:20:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:20:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:20:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:20:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:20:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:20:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:20:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:20:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:20:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:20:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:20:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:20:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:20:09,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:20:09,664 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:20:09,922 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:20:09,925 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:20:10,213 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:20:10,213 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:20:10,374 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:20:10,374 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:20:10,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:20:10 BoogieIcfgContainer [2024-10-24 12:20:10,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:20:10,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:20:10,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:20:10,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:20:10,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:20:08" (1/3) ... [2024-10-24 12:20:10,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f69efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:20:10, skipping insertion in model container [2024-10-24 12:20:10,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:20:09" (2/3) ... [2024-10-24 12:20:10,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f69efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:20:10, skipping insertion in model container [2024-10-24 12:20:10,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:20:10" (3/3) ... [2024-10-24 12:20:10,384 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2024-10-24 12:20:10,404 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:20:10,405 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-24 12:20:10,405 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:20:10,485 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 12:20:10,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 134 flow [2024-10-24 12:20:10,565 INFO L124 PetriNetUnfolderBase]: 10/73 cut-off events. [2024-10-24 12:20:10,566 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:20:10,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 10/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2024-10-24 12:20:10,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 60 transitions, 134 flow [2024-10-24 12:20:10,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 118 flow [2024-10-24 12:20:10,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:20:10,589 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;@6f829f86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:20:10,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-24 12:20:10,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:20:10,593 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2024-10-24 12:20:10,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:20:10,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:10,594 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 12:20:10,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:10,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash 13054026, now seen corresponding path program 1 times [2024-10-24 12:20:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:10,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204576174] [2024-10-24 12:20:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:10,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:11,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:11,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204576174] [2024-10-24 12:20:11,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204576174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:11,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:11,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:20:11,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411890311] [2024-10-24 12:20:11,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:11,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:20:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:20:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:20:11,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:11,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:11,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:11,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:11,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:11,601 INFO L124 PetriNetUnfolderBase]: 466/835 cut-off events. [2024-10-24 12:20:11,603 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 12:20:11,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 835 events. 466/835 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3555 event pairs, 345 based on Foata normal form. 3/834 useless extension candidates. Maximal degree in co-relation 1550. Up to 602 conditions per place. [2024-10-24 12:20:11,616 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 39 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-10-24 12:20:11,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 218 flow [2024-10-24 12:20:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:20:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:20:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-24 12:20:11,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-24 12:20:11,636 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 3 states and 84 transitions. [2024-10-24 12:20:11,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 218 flow [2024-10-24 12:20:11,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 12:20:11,647 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 112 flow [2024-10-24 12:20:11,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-10-24 12:20:11,656 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-10-24 12:20:11,656 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 112 flow [2024-10-24 12:20:11,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:11,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:11,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 12:20:11,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:20:11,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:11,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash -339911441, now seen corresponding path program 1 times [2024-10-24 12:20:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:11,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208620891] [2024-10-24 12:20:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:11,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:11,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208620891] [2024-10-24 12:20:11,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208620891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:11,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:11,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:20:11,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565157955] [2024-10-24 12:20:11,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:11,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:20:11,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:20:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:20:11,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:11,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:11,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:11,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:11,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:12,234 INFO L124 PetriNetUnfolderBase]: 466/821 cut-off events. [2024-10-24 12:20:12,234 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-24 12:20:12,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 821 events. 466/821 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3485 event pairs, 155 based on Foata normal form. 1/821 useless extension candidates. Maximal degree in co-relation 818. Up to 553 conditions per place. [2024-10-24 12:20:12,243 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 47 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-10-24 12:20:12,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 265 flow [2024-10-24 12:20:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:20:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:20:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-10-24 12:20:12,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-10-24 12:20:12,249 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 112 flow. Second operand 5 states and 109 transitions. [2024-10-24 12:20:12,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 265 flow [2024-10-24 12:20:12,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:20:12,256 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 126 flow [2024-10-24 12:20:12,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-24 12:20:12,258 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-10-24 12:20:12,258 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 126 flow [2024-10-24 12:20:12,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:12,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:12,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:12,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:20:12,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:12,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash 80723095, now seen corresponding path program 1 times [2024-10-24 12:20:12,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:12,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135548729] [2024-10-24 12:20:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:12,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:12,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135548729] [2024-10-24 12:20:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135548729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:12,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:12,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:20:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584460453] [2024-10-24 12:20:12,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:12,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:20:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:20:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:20:12,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:12,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:12,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:12,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:12,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:12,798 INFO L124 PetriNetUnfolderBase]: 562/1029 cut-off events. [2024-10-24 12:20:12,799 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-10-24 12:20:12,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 1029 events. 562/1029 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4890 event pairs, 252 based on Foata normal form. 64/1092 useless extension candidates. Maximal degree in co-relation 228. Up to 545 conditions per place. [2024-10-24 12:20:12,808 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 49 selfloop transitions, 10 changer transitions 4/67 dead transitions. [2024-10-24 12:20:12,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 306 flow [2024-10-24 12:20:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:20:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:20:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-24 12:20:12,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-10-24 12:20:12,810 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 126 flow. Second operand 4 states and 102 transitions. [2024-10-24 12:20:12,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 306 flow [2024-10-24 12:20:12,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 12:20:12,815 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 150 flow [2024-10-24 12:20:12,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-24 12:20:12,816 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2024-10-24 12:20:12,817 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 150 flow [2024-10-24 12:20:12,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:12,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:12,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:12,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:20:12,818 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:12,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1652907070, now seen corresponding path program 1 times [2024-10-24 12:20:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880629109] [2024-10-24 12:20:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880629109] [2024-10-24 12:20:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880629109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:12,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:12,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:20:12,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212395233] [2024-10-24 12:20:12,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:12,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:20:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:20:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:20:12,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-10-24 12:20:12,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:12,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:12,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-10-24 12:20:12,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:13,103 INFO L124 PetriNetUnfolderBase]: 225/408 cut-off events. [2024-10-24 12:20:13,104 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-10-24 12:20:13,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 408 events. 225/408 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1435 event pairs, 46 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 927. Up to 217 conditions per place. [2024-10-24 12:20:13,108 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 48 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-10-24 12:20:13,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 278 flow [2024-10-24 12:20:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:20:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:20:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-24 12:20:13,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-10-24 12:20:13,111 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 150 flow. Second operand 4 states and 131 transitions. [2024-10-24 12:20:13,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 278 flow [2024-10-24 12:20:13,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 248 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-24 12:20:13,114 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 96 flow [2024-10-24 12:20:13,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-10-24 12:20:13,115 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -12 predicate places. [2024-10-24 12:20:13,116 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 96 flow [2024-10-24 12:20:13,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:13,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:13,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:13,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:20:13,117 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:13,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash -62179198, now seen corresponding path program 1 times [2024-10-24 12:20:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:13,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77536677] [2024-10-24 12:20:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:13,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:13,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:13,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77536677] [2024-10-24 12:20:13,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77536677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:13,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:13,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:20:13,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870182997] [2024-10-24 12:20:13,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:13,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:20:13,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:13,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:20:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:20:13,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-24 12:20:13,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:13,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:13,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-24 12:20:13,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:14,244 INFO L124 PetriNetUnfolderBase]: 483/862 cut-off events. [2024-10-24 12:20:14,246 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-10-24 12:20:14,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 862 events. 483/862 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3897 event pairs, 64 based on Foata normal form. 8/868 useless extension candidates. Maximal degree in co-relation 366. Up to 223 conditions per place. [2024-10-24 12:20:14,254 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 83 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-10-24 12:20:14,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 113 transitions, 539 flow [2024-10-24 12:20:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:20:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:20:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-10-24 12:20:14,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283333333333333 [2024-10-24 12:20:14,260 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 96 flow. Second operand 10 states and 317 transitions. [2024-10-24 12:20:14,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 113 transitions, 539 flow [2024-10-24 12:20:14,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 113 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:20:14,266 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 272 flow [2024-10-24 12:20:14,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-10-24 12:20:14,269 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-10-24 12:20:14,269 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 272 flow [2024-10-24 12:20:14,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:14,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:14,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:14,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:20:14,270 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:14,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1900616770, now seen corresponding path program 2 times [2024-10-24 12:20:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:14,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853868708] [2024-10-24 12:20:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853868708] [2024-10-24 12:20:15,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853868708] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:15,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:15,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:20:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810928025] [2024-10-24 12:20:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:15,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:20:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:15,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:20:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:20:15,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-24 12:20:15,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 272 flow. Second operand has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:15,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:15,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-24 12:20:15,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:15,627 INFO L124 PetriNetUnfolderBase]: 537/964 cut-off events. [2024-10-24 12:20:15,627 INFO L125 PetriNetUnfolderBase]: For 1460/1460 co-relation queries the response was YES. [2024-10-24 12:20:15,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 964 events. 537/964 cut-off events. For 1460/1460 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4456 event pairs, 30 based on Foata normal form. 8/970 useless extension candidates. Maximal degree in co-relation 1740. Up to 330 conditions per place. [2024-10-24 12:20:15,636 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 78 selfloop transitions, 49 changer transitions 0/134 dead transitions. [2024-10-24 12:20:15,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 134 transitions, 966 flow [2024-10-24 12:20:15,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:20:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:20:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 348 transitions. [2024-10-24 12:20:15,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-24 12:20:15,639 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 272 flow. Second operand 12 states and 348 transitions. [2024-10-24 12:20:15,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 134 transitions, 966 flow [2024-10-24 12:20:15,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 134 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:20:15,649 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 640 flow [2024-10-24 12:20:15,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=640, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2024-10-24 12:20:15,650 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-10-24 12:20:15,650 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 640 flow [2024-10-24 12:20:15,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:15,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:15,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:15,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:20:15,651 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:15,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash -426585704, now seen corresponding path program 3 times [2024-10-24 12:20:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:15,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117731178] [2024-10-24 12:20:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:16,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:16,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117731178] [2024-10-24 12:20:16,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117731178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:16,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:16,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 12:20:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868295796] [2024-10-24 12:20:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:16,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:20:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:20:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:20:16,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:16,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 640 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:16,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:17,624 INFO L124 PetriNetUnfolderBase]: 834/1543 cut-off events. [2024-10-24 12:20:17,624 INFO L125 PetriNetUnfolderBase]: For 4885/4885 co-relation queries the response was YES. [2024-10-24 12:20:17,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 1543 events. 834/1543 cut-off events. For 4885/4885 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8357 event pairs, 88 based on Foata normal form. 0/1541 useless extension candidates. Maximal degree in co-relation 3651. Up to 548 conditions per place. [2024-10-24 12:20:17,639 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 121 selfloop transitions, 56 changer transitions 0/179 dead transitions. [2024-10-24 12:20:17,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 179 transitions, 1599 flow [2024-10-24 12:20:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 12:20:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 12:20:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 261 transitions. [2024-10-24 12:20:17,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29 [2024-10-24 12:20:17,641 INFO L175 Difference]: Start difference. First operand has 70 places, 86 transitions, 640 flow. Second operand 15 states and 261 transitions. [2024-10-24 12:20:17,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 179 transitions, 1599 flow [2024-10-24 12:20:17,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 179 transitions, 1518 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-10-24 12:20:17,654 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 966 flow [2024-10-24 12:20:17,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=966, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-10-24 12:20:17,655 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-10-24 12:20:17,656 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 966 flow [2024-10-24 12:20:17,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:17,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:17,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:17,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:20:17,657 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:17,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash -974318922, now seen corresponding path program 4 times [2024-10-24 12:20:17,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453723267] [2024-10-24 12:20:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:18,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:18,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453723267] [2024-10-24 12:20:18,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453723267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:18,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:18,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 12:20:18,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178814595] [2024-10-24 12:20:18,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:18,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:20:18,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:20:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:20:18,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:18,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 966 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:18,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:18,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:18,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:20,080 INFO L124 PetriNetUnfolderBase]: 1087/2034 cut-off events. [2024-10-24 12:20:20,081 INFO L125 PetriNetUnfolderBase]: For 7722/7722 co-relation queries the response was YES. [2024-10-24 12:20:20,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8522 conditions, 2034 events. 1087/2034 cut-off events. For 7722/7722 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11896 event pairs, 113 based on Foata normal form. 1/2035 useless extension candidates. Maximal degree in co-relation 8471. Up to 855 conditions per place. [2024-10-24 12:20:20,100 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 127 selfloop transitions, 79 changer transitions 0/208 dead transitions. [2024-10-24 12:20:20,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 208 transitions, 2065 flow [2024-10-24 12:20:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 12:20:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 12:20:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 298 transitions. [2024-10-24 12:20:20,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2759259259259259 [2024-10-24 12:20:20,107 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 966 flow. Second operand 18 states and 298 transitions. [2024-10-24 12:20:20,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 208 transitions, 2065 flow [2024-10-24 12:20:20,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 208 transitions, 2013 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-24 12:20:20,132 INFO L231 Difference]: Finished difference. Result has 110 places, 129 transitions, 1412 flow [2024-10-24 12:20:20,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1412, PETRI_PLACES=110, PETRI_TRANSITIONS=129} [2024-10-24 12:20:20,138 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2024-10-24 12:20:20,138 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 129 transitions, 1412 flow [2024-10-24 12:20:20,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:20,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:20,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:20,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:20:20,141 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:20,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1547105784, now seen corresponding path program 5 times [2024-10-24 12:20:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:20,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035491778] [2024-10-24 12:20:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:20,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:20,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035491778] [2024-10-24 12:20:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035491778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:20,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:20,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 12:20:20,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813715945] [2024-10-24 12:20:20,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:20,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:20:20,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:20:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:20:20,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:20,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 129 transitions, 1412 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:20,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:20,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:20,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:22,104 INFO L124 PetriNetUnfolderBase]: 1087/2032 cut-off events. [2024-10-24 12:20:22,104 INFO L125 PetriNetUnfolderBase]: For 10996/10996 co-relation queries the response was YES. [2024-10-24 12:20:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9183 conditions, 2032 events. 1087/2032 cut-off events. For 10996/10996 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11717 event pairs, 100 based on Foata normal form. 1/2033 useless extension candidates. Maximal degree in co-relation 9123. Up to 498 conditions per place. [2024-10-24 12:20:22,133 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 132 selfloop transitions, 93 changer transitions 0/227 dead transitions. [2024-10-24 12:20:22,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 227 transitions, 2501 flow [2024-10-24 12:20:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-24 12:20:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-24 12:20:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 324 transitions. [2024-10-24 12:20:22,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28421052631578947 [2024-10-24 12:20:22,136 INFO L175 Difference]: Start difference. First operand has 110 places, 129 transitions, 1412 flow. Second operand 19 states and 324 transitions. [2024-10-24 12:20:22,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 227 transitions, 2501 flow [2024-10-24 12:20:22,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 227 transitions, 2425 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-10-24 12:20:22,184 INFO L231 Difference]: Finished difference. Result has 133 places, 149 transitions, 1879 flow [2024-10-24 12:20:22,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1879, PETRI_PLACES=133, PETRI_TRANSITIONS=149} [2024-10-24 12:20:22,186 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2024-10-24 12:20:22,186 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 149 transitions, 1879 flow [2024-10-24 12:20:22,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:22,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:22,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:22,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:20:22,188 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:22,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2101411976, now seen corresponding path program 6 times [2024-10-24 12:20:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:22,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999713497] [2024-10-24 12:20:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:22,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:23,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999713497] [2024-10-24 12:20:23,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999713497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:23,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:23,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 12:20:23,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444093318] [2024-10-24 12:20:23,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:23,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:20:23,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:23,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:20:23,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:20:23,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:23,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 149 transitions, 1879 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:23,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:23,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:23,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:24,398 INFO L124 PetriNetUnfolderBase]: 1087/2028 cut-off events. [2024-10-24 12:20:24,399 INFO L125 PetriNetUnfolderBase]: For 15015/15015 co-relation queries the response was YES. [2024-10-24 12:20:24,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9986 conditions, 2028 events. 1087/2028 cut-off events. For 15015/15015 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11753 event pairs, 199 based on Foata normal form. 2/2030 useless extension candidates. Maximal degree in co-relation 9924. Up to 605 conditions per place. [2024-10-24 12:20:24,423 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 153 selfloop transitions, 90 changer transitions 0/244 dead transitions. [2024-10-24 12:20:24,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 244 transitions, 3057 flow [2024-10-24 12:20:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-24 12:20:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-24 12:20:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 326 transitions. [2024-10-24 12:20:24,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28596491228070176 [2024-10-24 12:20:24,425 INFO L175 Difference]: Start difference. First operand has 133 places, 149 transitions, 1879 flow. Second operand 19 states and 326 transitions. [2024-10-24 12:20:24,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 244 transitions, 3057 flow [2024-10-24 12:20:24,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 244 transitions, 2959 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-10-24 12:20:24,492 INFO L231 Difference]: Finished difference. Result has 143 places, 161 transitions, 2221 flow [2024-10-24 12:20:24,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2221, PETRI_PLACES=143, PETRI_TRANSITIONS=161} [2024-10-24 12:20:24,493 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-10-24 12:20:24,494 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 161 transitions, 2221 flow [2024-10-24 12:20:24,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:24,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:24,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:24,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:20:24,495 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:24,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1166142421, now seen corresponding path program 1 times [2024-10-24 12:20:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:24,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228223716] [2024-10-24 12:20:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:24,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:24,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:24,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228223716] [2024-10-24 12:20:24,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228223716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:24,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:24,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:20:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329882209] [2024-10-24 12:20:24,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:24,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:20:24,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:24,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:20:24,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:20:24,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-24 12:20:24,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 161 transitions, 2221 flow. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:24,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:24,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-24 12:20:24,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:25,404 INFO L124 PetriNetUnfolderBase]: 1011/1910 cut-off events. [2024-10-24 12:20:25,404 INFO L125 PetriNetUnfolderBase]: For 15994/15994 co-relation queries the response was YES. [2024-10-24 12:20:25,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9723 conditions, 1910 events. 1011/1910 cut-off events. For 15994/15994 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11201 event pairs, 152 based on Foata normal form. 14/1924 useless extension candidates. Maximal degree in co-relation 9171. Up to 1172 conditions per place. [2024-10-24 12:20:25,427 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 125 selfloop transitions, 94 changer transitions 0/230 dead transitions. [2024-10-24 12:20:25,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 230 transitions, 3589 flow [2024-10-24 12:20:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:20:25,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 12:20:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 272 transitions. [2024-10-24 12:20:25,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-10-24 12:20:25,430 INFO L175 Difference]: Start difference. First operand has 143 places, 161 transitions, 2221 flow. Second operand 9 states and 272 transitions. [2024-10-24 12:20:25,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 230 transitions, 3589 flow [2024-10-24 12:20:25,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 230 transitions, 3381 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-10-24 12:20:25,513 INFO L231 Difference]: Finished difference. Result has 148 places, 199 transitions, 3067 flow [2024-10-24 12:20:25,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3067, PETRI_PLACES=148, PETRI_TRANSITIONS=199} [2024-10-24 12:20:25,514 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 95 predicate places. [2024-10-24 12:20:25,514 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 199 transitions, 3067 flow [2024-10-24 12:20:25,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:25,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:25,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:25,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:20:25,515 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:25,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1134493529, now seen corresponding path program 2 times [2024-10-24 12:20:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:25,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090395139] [2024-10-24 12:20:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:25,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:26,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:26,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090395139] [2024-10-24 12:20:26,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090395139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:26,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:26,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-24 12:20:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823707368] [2024-10-24 12:20:26,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:26,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:20:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:20:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:20:26,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:26,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 199 transitions, 3067 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:26,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:26,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:26,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:27,547 INFO L124 PetriNetUnfolderBase]: 1011/1908 cut-off events. [2024-10-24 12:20:27,548 INFO L125 PetriNetUnfolderBase]: For 17158/17158 co-relation queries the response was YES. [2024-10-24 12:20:27,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10236 conditions, 1908 events. 1011/1908 cut-off events. For 17158/17158 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11017 event pairs, 249 based on Foata normal form. 1/1909 useless extension candidates. Maximal degree in co-relation 9862. Up to 1520 conditions per place. [2024-10-24 12:20:27,565 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 135 selfloop transitions, 74 changer transitions 47/257 dead transitions. [2024-10-24 12:20:27,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 257 transitions, 4196 flow [2024-10-24 12:20:27,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:20:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:20:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-10-24 12:20:27,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.275 [2024-10-24 12:20:27,567 INFO L175 Difference]: Start difference. First operand has 148 places, 199 transitions, 3067 flow. Second operand 14 states and 231 transitions. [2024-10-24 12:20:27,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 257 transitions, 4196 flow [2024-10-24 12:20:27,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 257 transitions, 4050 flow, removed 67 selfloop flow, removed 1 redundant places. [2024-10-24 12:20:27,697 INFO L231 Difference]: Finished difference. Result has 165 places, 197 transitions, 3193 flow [2024-10-24 12:20:27,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3193, PETRI_PLACES=165, PETRI_TRANSITIONS=197} [2024-10-24 12:20:27,699 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 112 predicate places. [2024-10-24 12:20:27,699 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 197 transitions, 3193 flow [2024-10-24 12:20:27,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:27,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:27,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:27,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 12:20:27,700 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:27,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:27,700 INFO L85 PathProgramCache]: Analyzing trace with hash -155311481, now seen corresponding path program 3 times [2024-10-24 12:20:27,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:27,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847487724] [2024-10-24 12:20:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:27,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:28,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:28,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847487724] [2024-10-24 12:20:28,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847487724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:28,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-24 12:20:28,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182603532] [2024-10-24 12:20:28,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:28,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:20:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:28,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:20:28,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:20:28,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:28,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 197 transitions, 3193 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:28,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:28,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:28,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:29,664 INFO L124 PetriNetUnfolderBase]: 1003/1900 cut-off events. [2024-10-24 12:20:29,665 INFO L125 PetriNetUnfolderBase]: For 17446/17446 co-relation queries the response was YES. [2024-10-24 12:20:29,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10173 conditions, 1900 events. 1003/1900 cut-off events. For 17446/17446 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11148 event pairs, 277 based on Foata normal form. 1/1901 useless extension candidates. Maximal degree in co-relation 10095. Up to 1411 conditions per place. [2024-10-24 12:20:29,688 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 149 selfloop transitions, 58 changer transitions 45/253 dead transitions. [2024-10-24 12:20:29,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 253 transitions, 4203 flow [2024-10-24 12:20:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 12:20:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 12:20:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 220 transitions. [2024-10-24 12:20:29,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2024-10-24 12:20:29,691 INFO L175 Difference]: Start difference. First operand has 165 places, 197 transitions, 3193 flow. Second operand 13 states and 220 transitions. [2024-10-24 12:20:29,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 253 transitions, 4203 flow [2024-10-24 12:20:29,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 253 transitions, 4049 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-10-24 12:20:29,794 INFO L231 Difference]: Finished difference. Result has 158 places, 185 transitions, 3014 flow [2024-10-24 12:20:29,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3014, PETRI_PLACES=158, PETRI_TRANSITIONS=185} [2024-10-24 12:20:29,795 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2024-10-24 12:20:29,795 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 185 transitions, 3014 flow [2024-10-24 12:20:29,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:29,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:29,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:29,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 12:20:29,796 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:29,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:29,796 INFO L85 PathProgramCache]: Analyzing trace with hash 455871811, now seen corresponding path program 4 times [2024-10-24 12:20:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:29,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300108453] [2024-10-24 12:20:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:29,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300108453] [2024-10-24 12:20:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300108453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:30,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:30,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-24 12:20:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661632935] [2024-10-24 12:20:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:30,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:20:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:20:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:20:30,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:30,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 185 transitions, 3014 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:30,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:30,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:30,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:31,673 INFO L124 PetriNetUnfolderBase]: 906/1725 cut-off events. [2024-10-24 12:20:31,674 INFO L125 PetriNetUnfolderBase]: For 15780/15780 co-relation queries the response was YES. [2024-10-24 12:20:31,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9197 conditions, 1725 events. 906/1725 cut-off events. For 15780/15780 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9905 event pairs, 265 based on Foata normal form. 1/1726 useless extension candidates. Maximal degree in co-relation 9131. Up to 1245 conditions per place. [2024-10-24 12:20:31,684 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 129 selfloop transitions, 52 changer transitions 58/240 dead transitions. [2024-10-24 12:20:31,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 240 transitions, 3944 flow [2024-10-24 12:20:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:20:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:20:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 230 transitions. [2024-10-24 12:20:31,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2024-10-24 12:20:31,686 INFO L175 Difference]: Start difference. First operand has 158 places, 185 transitions, 3014 flow. Second operand 14 states and 230 transitions. [2024-10-24 12:20:31,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 240 transitions, 3944 flow [2024-10-24 12:20:31,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 240 transitions, 3742 flow, removed 11 selfloop flow, removed 15 redundant places. [2024-10-24 12:20:31,761 INFO L231 Difference]: Finished difference. Result has 152 places, 161 transitions, 2507 flow [2024-10-24 12:20:31,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2507, PETRI_PLACES=152, PETRI_TRANSITIONS=161} [2024-10-24 12:20:31,762 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-10-24 12:20:31,762 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 161 transitions, 2507 flow [2024-10-24 12:20:31,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:31,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:31,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:31,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 12:20:31,763 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:31,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash -744916971, now seen corresponding path program 5 times [2024-10-24 12:20:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:31,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580018343] [2024-10-24 12:20:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:31,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580018343] [2024-10-24 12:20:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580018343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:32,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:20:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408650763] [2024-10-24 12:20:32,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:32,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:20:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:20:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:20:32,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-24 12:20:32,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 161 transitions, 2507 flow. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:32,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:32,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-24 12:20:32,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:32,482 INFO L124 PetriNetUnfolderBase]: 672/1301 cut-off events. [2024-10-24 12:20:32,482 INFO L125 PetriNetUnfolderBase]: For 10777/10777 co-relation queries the response was YES. [2024-10-24 12:20:32,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6737 conditions, 1301 events. 672/1301 cut-off events. For 10777/10777 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7022 event pairs, 113 based on Foata normal form. 12/1313 useless extension candidates. Maximal degree in co-relation 6677. Up to 711 conditions per place. [2024-10-24 12:20:32,493 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 95 selfloop transitions, 73 changer transitions 3/182 dead transitions. [2024-10-24 12:20:32,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 182 transitions, 2831 flow [2024-10-24 12:20:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:20:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:20:32,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2024-10-24 12:20:32,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-10-24 12:20:32,495 INFO L175 Difference]: Start difference. First operand has 152 places, 161 transitions, 2507 flow. Second operand 10 states and 305 transitions. [2024-10-24 12:20:32,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 182 transitions, 2831 flow [2024-10-24 12:20:32,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 182 transitions, 2623 flow, removed 35 selfloop flow, removed 18 redundant places. [2024-10-24 12:20:32,541 INFO L231 Difference]: Finished difference. Result has 138 places, 157 transitions, 2372 flow [2024-10-24 12:20:32,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2372, PETRI_PLACES=138, PETRI_TRANSITIONS=157} [2024-10-24 12:20:32,542 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 85 predicate places. [2024-10-24 12:20:32,542 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 157 transitions, 2372 flow [2024-10-24 12:20:32,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:32,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:32,543 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:32,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 12:20:32,543 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:32,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash 896429373, now seen corresponding path program 6 times [2024-10-24 12:20:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:32,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649167444] [2024-10-24 12:20:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:32,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:33,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:33,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649167444] [2024-10-24 12:20:33,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649167444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:33,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:33,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 12:20:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229875703] [2024-10-24 12:20:33,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:33,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:20:33,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:33,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:20:33,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:20:33,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:33,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 157 transitions, 2372 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:33,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:33,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:33,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:34,249 INFO L124 PetriNetUnfolderBase]: 669/1290 cut-off events. [2024-10-24 12:20:34,249 INFO L125 PetriNetUnfolderBase]: For 10411/10411 co-relation queries the response was YES. [2024-10-24 12:20:34,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6544 conditions, 1290 events. 669/1290 cut-off events. For 10411/10411 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6883 event pairs, 163 based on Foata normal form. 2/1292 useless extension candidates. Maximal degree in co-relation 6459. Up to 892 conditions per place. [2024-10-24 12:20:34,258 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 103 selfloop transitions, 39 changer transitions 45/188 dead transitions. [2024-10-24 12:20:34,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 188 transitions, 2907 flow [2024-10-24 12:20:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:20:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:20:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 226 transitions. [2024-10-24 12:20:34,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26904761904761904 [2024-10-24 12:20:34,260 INFO L175 Difference]: Start difference. First operand has 138 places, 157 transitions, 2372 flow. Second operand 14 states and 226 transitions. [2024-10-24 12:20:34,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 188 transitions, 2907 flow [2024-10-24 12:20:34,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 188 transitions, 2768 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-24 12:20:34,311 INFO L231 Difference]: Finished difference. Result has 146 places, 127 transitions, 1860 flow [2024-10-24 12:20:34,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1860, PETRI_PLACES=146, PETRI_TRANSITIONS=127} [2024-10-24 12:20:34,311 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-10-24 12:20:34,312 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 127 transitions, 1860 flow [2024-10-24 12:20:34,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:34,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:34,313 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:34,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 12:20:34,313 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:34,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1954738729, now seen corresponding path program 7 times [2024-10-24 12:20:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:34,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391418138] [2024-10-24 12:20:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:34,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:34,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391418138] [2024-10-24 12:20:34,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391418138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:34,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:34,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:20:34,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174884534] [2024-10-24 12:20:34,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:34,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:20:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:20:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:20:34,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-24 12:20:34,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 127 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:34,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:34,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-24 12:20:34,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:35,040 INFO L124 PetriNetUnfolderBase]: 629/1192 cut-off events. [2024-10-24 12:20:35,040 INFO L125 PetriNetUnfolderBase]: For 8925/8925 co-relation queries the response was YES. [2024-10-24 12:20:35,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5959 conditions, 1192 events. 629/1192 cut-off events. For 8925/8925 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6304 event pairs, 62 based on Foata normal form. 10/1202 useless extension candidates. Maximal degree in co-relation 5906. Up to 591 conditions per place. [2024-10-24 12:20:35,048 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 86 selfloop transitions, 74 changer transitions 0/169 dead transitions. [2024-10-24 12:20:35,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 169 transitions, 2565 flow [2024-10-24 12:20:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:20:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:20:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 339 transitions. [2024-10-24 12:20:35,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-10-24 12:20:35,052 INFO L175 Difference]: Start difference. First operand has 146 places, 127 transitions, 1860 flow. Second operand 12 states and 339 transitions. [2024-10-24 12:20:35,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 169 transitions, 2565 flow [2024-10-24 12:20:35,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 169 transitions, 2133 flow, removed 33 selfloop flow, removed 29 redundant places. [2024-10-24 12:20:35,089 INFO L231 Difference]: Finished difference. Result has 111 places, 137 transitions, 1842 flow [2024-10-24 12:20:35,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1842, PETRI_PLACES=111, PETRI_TRANSITIONS=137} [2024-10-24 12:20:35,090 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-10-24 12:20:35,090 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 137 transitions, 1842 flow [2024-10-24 12:20:35,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:35,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:35,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:35,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 12:20:35,091 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:35,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1164023119, now seen corresponding path program 8 times [2024-10-24 12:20:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:35,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256818207] [2024-10-24 12:20:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:35,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:35,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:35,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256818207] [2024-10-24 12:20:35,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256818207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:35,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:35,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 12:20:35,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390196516] [2024-10-24 12:20:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:35,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:20:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:35,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:20:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:20:36,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:36,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 137 transitions, 1842 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:36,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:36,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:36,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:36,551 INFO L124 PetriNetUnfolderBase]: 708/1355 cut-off events. [2024-10-24 12:20:36,551 INFO L125 PetriNetUnfolderBase]: For 8236/8236 co-relation queries the response was YES. [2024-10-24 12:20:36,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6477 conditions, 1355 events. 708/1355 cut-off events. For 8236/8236 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7355 event pairs, 184 based on Foata normal form. 1/1356 useless extension candidates. Maximal degree in co-relation 6220. Up to 897 conditions per place. [2024-10-24 12:20:36,558 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 113 selfloop transitions, 48 changer transitions 47/209 dead transitions. [2024-10-24 12:20:36,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 209 transitions, 2870 flow [2024-10-24 12:20:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 12:20:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 12:20:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 242 transitions. [2024-10-24 12:20:36,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2688888888888889 [2024-10-24 12:20:36,561 INFO L175 Difference]: Start difference. First operand has 111 places, 137 transitions, 1842 flow. Second operand 15 states and 242 transitions. [2024-10-24 12:20:36,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 209 transitions, 2870 flow [2024-10-24 12:20:36,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 209 transitions, 2562 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-10-24 12:20:36,588 INFO L231 Difference]: Finished difference. Result has 119 places, 137 transitions, 1696 flow [2024-10-24 12:20:36,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1696, PETRI_PLACES=119, PETRI_TRANSITIONS=137} [2024-10-24 12:20:36,589 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-10-24 12:20:36,589 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 137 transitions, 1696 flow [2024-10-24 12:20:36,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:36,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:36,590 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:36,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 12:20:36,590 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:36,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash 267005707, now seen corresponding path program 9 times [2024-10-24 12:20:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:36,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676613395] [2024-10-24 12:20:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:36,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:36,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676613395] [2024-10-24 12:20:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676613395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:36,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:36,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:20:36,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012934642] [2024-10-24 12:20:36,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:36,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:20:36,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:36,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:20:36,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:20:36,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-24 12:20:36,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 137 transitions, 1696 flow. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:36,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:36,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-24 12:20:36,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:37,154 INFO L124 PetriNetUnfolderBase]: 486/957 cut-off events. [2024-10-24 12:20:37,155 INFO L125 PetriNetUnfolderBase]: For 4906/4906 co-relation queries the response was YES. [2024-10-24 12:20:37,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 957 events. 486/957 cut-off events. For 4906/4906 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4860 event pairs, 71 based on Foata normal form. 12/969 useless extension candidates. Maximal degree in co-relation 4270. Up to 403 conditions per place. [2024-10-24 12:20:37,181 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 92 selfloop transitions, 67 changer transitions 1/169 dead transitions. [2024-10-24 12:20:37,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 169 transitions, 2091 flow [2024-10-24 12:20:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:20:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 12:20:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 330 transitions. [2024-10-24 12:20:37,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 12:20:37,183 INFO L175 Difference]: Start difference. First operand has 119 places, 137 transitions, 1696 flow. Second operand 11 states and 330 transitions. [2024-10-24 12:20:37,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 169 transitions, 2091 flow [2024-10-24 12:20:37,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 169 transitions, 1975 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-10-24 12:20:37,200 INFO L231 Difference]: Finished difference. Result has 121 places, 141 transitions, 1756 flow [2024-10-24 12:20:37,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1756, PETRI_PLACES=121, PETRI_TRANSITIONS=141} [2024-10-24 12:20:37,200 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-10-24 12:20:37,201 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 141 transitions, 1756 flow [2024-10-24 12:20:37,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:37,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:37,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:37,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 12:20:37,201 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:37,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 983390287, now seen corresponding path program 10 times [2024-10-24 12:20:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:37,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002169966] [2024-10-24 12:20:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002169966] [2024-10-24 12:20:38,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002169966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:38,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-24 12:20:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987168618] [2024-10-24 12:20:38,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:38,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:20:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:20:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:20:38,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:38,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 141 transitions, 1756 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:38,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:38,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:38,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:38,606 INFO L124 PetriNetUnfolderBase]: 491/978 cut-off events. [2024-10-24 12:20:38,606 INFO L125 PetriNetUnfolderBase]: For 5654/5654 co-relation queries the response was YES. [2024-10-24 12:20:38,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 978 events. 491/978 cut-off events. For 5654/5654 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4950 event pairs, 101 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 4368. Up to 574 conditions per place. [2024-10-24 12:20:38,612 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 98 selfloop transitions, 42 changer transitions 40/181 dead transitions. [2024-10-24 12:20:38,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 181 transitions, 2370 flow [2024-10-24 12:20:38,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:20:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:20:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 223 transitions. [2024-10-24 12:20:38,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2654761904761905 [2024-10-24 12:20:38,613 INFO L175 Difference]: Start difference. First operand has 121 places, 141 transitions, 1756 flow. Second operand 14 states and 223 transitions. [2024-10-24 12:20:38,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 181 transitions, 2370 flow [2024-10-24 12:20:38,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 181 transitions, 2246 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-10-24 12:20:38,637 INFO L231 Difference]: Finished difference. Result has 129 places, 122 transitions, 1454 flow [2024-10-24 12:20:38,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1454, PETRI_PLACES=129, PETRI_TRANSITIONS=122} [2024-10-24 12:20:38,638 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-10-24 12:20:38,638 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 122 transitions, 1454 flow [2024-10-24 12:20:38,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:38,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:38,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:38,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 12:20:38,639 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:38,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:38,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2089402495, now seen corresponding path program 11 times [2024-10-24 12:20:38,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:38,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346404227] [2024-10-24 12:20:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:39,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346404227] [2024-10-24 12:20:39,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346404227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:39,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:39,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-24 12:20:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181090994] [2024-10-24 12:20:39,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:39,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:20:39,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:39,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:20:39,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:20:39,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:39,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 122 transitions, 1454 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:39,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:39,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:39,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:40,174 INFO L124 PetriNetUnfolderBase]: 392/781 cut-off events. [2024-10-24 12:20:40,175 INFO L125 PetriNetUnfolderBase]: For 4131/4131 co-relation queries the response was YES. [2024-10-24 12:20:40,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3676 conditions, 781 events. 392/781 cut-off events. For 4131/4131 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3695 event pairs, 77 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 3631. Up to 441 conditions per place. [2024-10-24 12:20:40,181 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 79 selfloop transitions, 31 changer transitions 44/155 dead transitions. [2024-10-24 12:20:40,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 155 transitions, 1933 flow [2024-10-24 12:20:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 12:20:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 12:20:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 249 transitions. [2024-10-24 12:20:40,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.259375 [2024-10-24 12:20:40,183 INFO L175 Difference]: Start difference. First operand has 129 places, 122 transitions, 1454 flow. Second operand 16 states and 249 transitions. [2024-10-24 12:20:40,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 155 transitions, 1933 flow [2024-10-24 12:20:40,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 155 transitions, 1704 flow, removed 5 selfloop flow, removed 21 redundant places. [2024-10-24 12:20:40,202 INFO L231 Difference]: Finished difference. Result has 119 places, 92 transitions, 929 flow [2024-10-24 12:20:40,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=929, PETRI_PLACES=119, PETRI_TRANSITIONS=92} [2024-10-24 12:20:40,202 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-10-24 12:20:40,202 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 92 transitions, 929 flow [2024-10-24 12:20:40,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:40,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:40,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:40,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 12:20:40,205 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:40,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1412299009, now seen corresponding path program 12 times [2024-10-24 12:20:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973812598] [2024-10-24 12:20:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:40,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:40,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973812598] [2024-10-24 12:20:40,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973812598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:40,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:40,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:20:40,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981099008] [2024-10-24 12:20:40,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:40,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:20:40,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:40,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:20:40,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:20:40,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-24 12:20:40,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 92 transitions, 929 flow. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:40,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:40,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-24 12:20:40,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:40,846 INFO L124 PetriNetUnfolderBase]: 177/380 cut-off events. [2024-10-24 12:20:40,846 INFO L125 PetriNetUnfolderBase]: For 1702/1702 co-relation queries the response was YES. [2024-10-24 12:20:40,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1672 conditions, 380 events. 177/380 cut-off events. For 1702/1702 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1450 event pairs, 10 based on Foata normal form. 18/398 useless extension candidates. Maximal degree in co-relation 1638. Up to 131 conditions per place. [2024-10-24 12:20:40,849 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 53 selfloop transitions, 41 changer transitions 0/101 dead transitions. [2024-10-24 12:20:40,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 1047 flow [2024-10-24 12:20:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:20:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:20:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 331 transitions. [2024-10-24 12:20:40,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4597222222222222 [2024-10-24 12:20:40,851 INFO L175 Difference]: Start difference. First operand has 119 places, 92 transitions, 929 flow. Second operand 12 states and 331 transitions. [2024-10-24 12:20:40,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 1047 flow [2024-10-24 12:20:40,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 894 flow, removed 23 selfloop flow, removed 18 redundant places. [2024-10-24 12:20:40,858 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 813 flow [2024-10-24 12:20:40,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=813, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-10-24 12:20:40,858 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2024-10-24 12:20:40,859 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 813 flow [2024-10-24 12:20:40,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:40,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:40,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:40,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 12:20:40,859 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:40,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash -372627619, now seen corresponding path program 13 times [2024-10-24 12:20:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:40,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264511687] [2024-10-24 12:20:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:40,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:41,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264511687] [2024-10-24 12:20:41,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264511687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:41,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:41,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-24 12:20:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658944080] [2024-10-24 12:20:41,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:41,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:20:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:20:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:20:41,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:41,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 813 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:41,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:41,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:41,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:42,233 INFO L124 PetriNetUnfolderBase]: 234/509 cut-off events. [2024-10-24 12:20:42,233 INFO L125 PetriNetUnfolderBase]: For 2082/2082 co-relation queries the response was YES. [2024-10-24 12:20:42,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2161 conditions, 509 events. 234/509 cut-off events. For 2082/2082 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2160 event pairs, 51 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 1984. Up to 238 conditions per place. [2024-10-24 12:20:42,236 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 60 selfloop transitions, 25 changer transitions 39/125 dead transitions. [2024-10-24 12:20:42,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 125 transitions, 1367 flow [2024-10-24 12:20:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:20:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:20:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 212 transitions. [2024-10-24 12:20:42,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2523809523809524 [2024-10-24 12:20:42,238 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 813 flow. Second operand 14 states and 212 transitions. [2024-10-24 12:20:42,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 125 transitions, 1367 flow [2024-10-24 12:20:42,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 125 transitions, 1258 flow, removed 18 selfloop flow, removed 13 redundant places. [2024-10-24 12:20:42,246 INFO L231 Difference]: Finished difference. Result has 100 places, 73 transitions, 697 flow [2024-10-24 12:20:42,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=697, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2024-10-24 12:20:42,247 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2024-10-24 12:20:42,247 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 697 flow [2024-10-24 12:20:42,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:42,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:42,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:42,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 12:20:42,248 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:42,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -27326571, now seen corresponding path program 14 times [2024-10-24 12:20:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255736820] [2024-10-24 12:20:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:42,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:43,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:43,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255736820] [2024-10-24 12:20:43,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255736820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:43,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:43,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 12:20:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496042448] [2024-10-24 12:20:43,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:43,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:20:43,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:43,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:20:43,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:20:43,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:43,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 697 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:43,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:43,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:43,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:43,775 INFO L124 PetriNetUnfolderBase]: 156/343 cut-off events. [2024-10-24 12:20:43,775 INFO L125 PetriNetUnfolderBase]: For 1230/1230 co-relation queries the response was YES. [2024-10-24 12:20:43,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 343 events. 156/343 cut-off events. For 1230/1230 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1265 event pairs, 22 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1376. Up to 116 conditions per place. [2024-10-24 12:20:43,777 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 39 selfloop transitions, 19 changer transitions 41/100 dead transitions. [2024-10-24 12:20:43,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 100 transitions, 1006 flow [2024-10-24 12:20:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 12:20:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 12:20:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 222 transitions. [2024-10-24 12:20:43,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24666666666666667 [2024-10-24 12:20:43,779 INFO L175 Difference]: Start difference. First operand has 100 places, 73 transitions, 697 flow. Second operand 15 states and 222 transitions. [2024-10-24 12:20:43,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 100 transitions, 1006 flow [2024-10-24 12:20:43,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 926 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-10-24 12:20:43,786 INFO L231 Difference]: Finished difference. Result has 97 places, 48 transitions, 388 flow [2024-10-24 12:20:43,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=388, PETRI_PLACES=97, PETRI_TRANSITIONS=48} [2024-10-24 12:20:43,787 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-10-24 12:20:43,787 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 48 transitions, 388 flow [2024-10-24 12:20:43,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:43,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:20:43,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:20:43,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 12:20:43,788 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:20:43,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:20:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -272510323, now seen corresponding path program 15 times [2024-10-24 12:20:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:20:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399655508] [2024-10-24 12:20:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:20:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:20:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:20:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:20:44,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:20:44,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399655508] [2024-10-24 12:20:44,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399655508] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:20:44,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:20:44,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 12:20:44,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618206747] [2024-10-24 12:20:44,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:20:44,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:20:44,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:20:44,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:20:44,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:20:44,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-24 12:20:44,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 48 transitions, 388 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:44,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:20:44,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-24 12:20:44,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:20:45,025 INFO L124 PetriNetUnfolderBase]: 81/182 cut-off events. [2024-10-24 12:20:45,025 INFO L125 PetriNetUnfolderBase]: For 712/712 co-relation queries the response was YES. [2024-10-24 12:20:45,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 182 events. 81/182 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 517 event pairs, 13 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 750. Up to 74 conditions per place. [2024-10-24 12:20:45,026 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2024-10-24 12:20:45,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 59 transitions, 541 flow [2024-10-24 12:20:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:20:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:20:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 191 transitions. [2024-10-24 12:20:45,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.22738095238095238 [2024-10-24 12:20:45,027 INFO L175 Difference]: Start difference. First operand has 97 places, 48 transitions, 388 flow. Second operand 14 states and 191 transitions. [2024-10-24 12:20:45,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 59 transitions, 541 flow [2024-10-24 12:20:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 323 flow, removed 5 selfloop flow, removed 39 redundant places. [2024-10-24 12:20:45,029 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-10-24 12:20:45,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-10-24 12:20:45,030 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-10-24 12:20:45,030 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-10-24 12:20:45,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:20:45,033 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2024-10-24 12:20:45,034 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2024-10-24 12:20:45,034 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-10-24 12:20:45,034 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-10-24 12:20:45,034 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2024-10-24 12:20:45,035 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2024-10-24 12:20:45,035 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-10-24 12:20:45,035 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-10-24 12:20:45,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 12:20:45,035 INFO L407 BasicCegarLoop]: Path program histogram: [15, 6, 1, 1, 1, 1] [2024-10-24 12:20:45,039 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:20:45,039 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:20:45,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:20:45 BasicIcfg [2024-10-24 12:20:45,044 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:20:45,045 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:20:45,045 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:20:45,045 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:20:45,046 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:20:10" (3/4) ... [2024-10-24 12:20:45,048 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:20:45,052 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_callback [2024-10-24 12:20:45,060 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 81 nodes and edges [2024-10-24 12:20:45,061 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-10-24 12:20:45,061 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-10-24 12:20:45,061 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 12:20:45,169 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:20:45,169 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:20:45,169 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:20:45,170 INFO L158 Benchmark]: Toolchain (without parser) took 36524.72ms. Allocated memory was 186.6MB in the beginning and 910.2MB in the end (delta: 723.5MB). Free memory was 117.7MB in the beginning and 347.0MB in the end (delta: -229.3MB). Peak memory consumption was 494.4MB. Max. memory is 16.1GB. [2024-10-24 12:20:45,171 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:20:45,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 721.41ms. Allocated memory is still 186.6MB. Free memory was 117.5MB in the beginning and 137.7MB in the end (delta: -20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-24 12:20:45,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.39ms. Allocated memory is still 186.6MB. Free memory was 137.7MB in the beginning and 134.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:20:45,171 INFO L158 Benchmark]: Boogie Preprocessor took 109.22ms. Allocated memory is still 186.6MB. Free memory was 134.7MB in the beginning and 131.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:20:45,172 INFO L158 Benchmark]: RCFGBuilder took 814.18ms. Allocated memory is still 186.6MB. Free memory was 131.1MB in the beginning and 89.5MB in the end (delta: 41.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-10-24 12:20:45,172 INFO L158 Benchmark]: TraceAbstraction took 34666.89ms. Allocated memory was 186.6MB in the beginning and 910.2MB in the end (delta: 723.5MB). Free memory was 89.1MB in the beginning and 353.3MB in the end (delta: -264.1MB). Peak memory consumption was 463.6MB. Max. memory is 16.1GB. [2024-10-24 12:20:45,172 INFO L158 Benchmark]: Witness Printer took 124.60ms. Allocated memory is still 910.2MB. Free memory was 353.3MB in the beginning and 347.0MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:20:45,174 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 721.41ms. Allocated memory is still 186.6MB. Free memory was 117.5MB in the beginning and 137.7MB in the end (delta: -20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.39ms. Allocated memory is still 186.6MB. Free memory was 137.7MB in the beginning and 134.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 109.22ms. Allocated memory is still 186.6MB. Free memory was 134.7MB in the beginning and 131.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 814.18ms. Allocated memory is still 186.6MB. Free memory was 131.1MB in the beginning and 89.5MB in the end (delta: 41.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 34666.89ms. Allocated memory was 186.6MB in the beginning and 910.2MB in the end (delta: 723.5MB). Free memory was 89.1MB in the beginning and 353.3MB in the end (delta: -264.1MB). Peak memory consumption was 463.6MB. Max. memory is 16.1GB. * Witness Printer took 124.60ms. Allocated memory is still 910.2MB. Free memory was 353.3MB in the beginning and 347.0MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 60 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.5s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2810 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2640 mSDsluCounter, 3770 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3700 mSDsCounter, 290 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9678 IncrementalHoareTripleChecker+Invalid, 9968 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 290 mSolverCounterUnsat, 70 mSDtfsCounter, 9678 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 425 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3193occurred in iteration=12, InterpolantAutomatonStates: 306, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 15.8s InterpolantComputationTime, 684 NumberOfCodeBlocks, 684 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 6945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 12:20:45,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE